SECTION 5. The City Clerk shall certify the adoption of this resolution and certify this record to be a full, true, and correct copy of the action taken.
PASSED, APPROVED AND ADOPTED, this 16th day of June 2026. ________________________________
Cindy Segawa, Mayor
ATTEST:
_____________________________________
Kathleen Horn Gregory, MMC, City Clerk
APPROVED AS TO FORM:
______________________________
Trevor Rusin, City Attorney
Tuesday, June 16, 2026 Reg CC MTG, Page *395
CITY OF LOMITA
FISCAL YEAR 2026-2027
STATEMENT OF INVESTMENT POLICY
I. PURPOSE AND POLICY
This statement is intended to provide guidelines for the prudent investment of the City's temporary idle cash, and to outline the procedures for maximizing the efficiency of the City's cash management system.
It is the policy of the City of Lomita to invest public funds in a manner which will provide the highest investment return with the maximum security while meeting daily cash flow demands and conforming to all state and local statutes governing the investment of public funds.
II. SCOPE
This investment policy applies to all financial assets of the City of Lomita. These funds are accounted for in the City of Lomita’s Annual Comprehensive Financial Report and include the following funds:
A. General Fund
B. Special Revenue Funds
C. Capital Project Funds
D. Enterprise Fund
E. Fiduciary Funds
III. PRUDENCE
Investments shall be made with judgement and care—under circumstances then prevailing—which persons of prudence, discretion, and intelligence exercise in the management of their own affairs, not for speculation, but for investment, considering the probable safety of capital as well as the probable income to be derived.
The standard of prudence to be used by investment officials shall be the “prudent person” and/or “prudent investor” standard and shall be applied in the context of managing an overall portfolio. Investment officers acting in accordance with written procedures and the investment policy and exercising due diligence shall be relieved of personal responsibility for an individual security’s credit risk or market price changes, provided deviations from expectations are reported in a timely fashion and appropriate action is taken to control adverse developments.
IV. OBJECTIVE
The City's cash management system is designed to accurately monitor and forecast revenues and expenditures, thus enabling the City to invest funds to the fullest extent possible.
Tuesday, June 16, 2026 Reg CC MTG, Page *396
In conformance with California Government Code Sec. 53600.5, the City attempts to obtain the highest yield obtainable as long as investments meet the criteria established for safety and liquidity.
Objectives for selecting investments and the order of priority are:
1. Safety - The safety and risk associated with an investment refers to the potential loss of principal, interest, or a combination of these amounts. The City should select only those investments that are considered very safe. The City shall not engage in speculation.
2. Liquidity - This refers to the ability to "cash in" at any time with a minimal chance of losing some portion of principal or interest. Liquidity is an important investment quality especially when the need for unexpected funds occurs.
3. Yield - Yield is the potential dollar earnings an investment can provide, and sometimes is referred to as the rate of return.
4. Public Trust – While managing the city’s portfolio, the treasurer and their staff will avoid any transactions that might impair public confidence in the local agency.
V. INVESTMENT PROCEDURES
The City Manager shall establish written investment policy procedures for the operation of the investment program consistent with this policy. The procedures should include reference to safekeeping, wire transfer agreements, banking service contracts and collateral/depository agreements. Such procedures shall include explicit delegation of authority to persons responsible for investment transactions. No person may engage in an investment transaction except as provided under the terms of this policy and the procedures established by the City Manager.
VI. ETHICS AND CONFLICTS OF INTEREST
Officers and employees involved in the investment process shall refrain from personal business activity that could conflict with proper execution of the investment program or which could impair their ability to make impartial investment decisions. Employees and investment officials shall disclose to the City Manager any material financial interests in financial institutions that conduct business within their jurisdiction, and they shall further disclose any large personal financial/investment positions that could be related to the performance of the City of Lomita.
VII. DELEGATION OF AUTHORITY
Authority to manage the City of Lomita’s investment program is derived from City Council Resolution. Management responsibility for the investment program is hereby delegated to the City Manager who shall be responsible for all transactions undertaken and shall establish a system of controls to regulate the activities of subordinate officials and their procedures in the absence of the City Manager.
Tuesday, June 16, 2026 Reg CC MTG, Page *397
VIII. SAFEKEEPING AND CUSTODY
Deposits of surplus funds must be made in State or National banks, State or Federal savings associations or State or Federal credit unions within the State of California. The deposits cannot exceed the amount of the institution’s paid-up capital and surplus.
Eligible securities shall have a market value of at least 10% in excess of the total amount of the deposit. United States treasury notes, bonds, bills, or certificates of indebtedness must have a market value of at least 50% of the total amount of the deposits. Letters of credit drawn on the Federal Home Loan Bank shall have a market value of at least 5% in excess of the total amount of deposits secured by those eligible securities. {Sec. 53652} The City Manager may waive collateral for that portion of a deposit which is insured pursuant to Federal law. Currently, the first $250,000 of a deposit is federally insured.
Deposits in excess of $250,000 are collateralized as previously indicated.
All security transactions entered into by the City of Lomita shall be conducted on a delivery-versus-payment (DVP) basis. Securities will be held by a third-party custodian designated by the Treasurer and evidenced by safekeeping receipts.
IX. AUTHORIZED FINANCIAL DEALERS AND INSTITUTIONS
The City Manager or his delegate will maintain a list of financial institutions authorized to provide investment services. In addition, a list will also be maintained of approved security broker/dealers selected by credit worthiness who are authorized to provide investment services in the State of California. These may include “primary” dealers or regional dealers that qualify under Securities & Exchange Commission Rule 15C3-1 (uniform net capital rule). No public deposit shall be made except in a qualified public depository as established by state laws.
All financial institutions and broker/dealers who desire to become qualified bidders for investment transactions must supply the City Manager with the following: audited financial statements, proof of National Association of Security Dealers certification, trading resolution, proof of state registration, completed broker/dealer questionnaire, and certification of having read entity’s investment policy and depository contracts.
An annual review of the financial condition and registrations of qualified bidders will be conducted by the City Manager. Also, a current audited financial statement is required to be on file for each financial institution and broker/dealer in which the City of Lomita invests.
X. AUTHORIZED AND SUITABLE INVESTMENTS
The following investments are authorized by the California Government Code:
• Local Agency Investment Fund {Sec. 16429.1}
• County Treasurer demand deposits {Sec. 53684}
• Passbook savings demand deposits {Sec. 53631}
• Certificates of Deposit (5-year maximum) {Sec. 53601 & 53635} • Bonds issued by the City of Lomita {Sec. 53601 (a)}
• Treasury notes and bonds of the U.S. Government, or its agencies {Sec. 53601 (b)& (e)}
Tuesday, June 16, 2026 Reg CC MTG, Page *398
• Treasury notes and bonds of the State of California {Sec. 53601 (c)} • Enterprise obligations of the U.S. Government , or its agencies {Sec. 53601 (f)} • Bankers’ acceptances (40% maximum) {Sec. 53601 (g)}
• Commercial paper (25% maximum) {Sec. 53601 (h)}
• Negotiable certificates of deposit (50% maximum) {Sec. 53601.8 (j)} • Repurchase agreements (1-year term maximum) (102% of underlying collateral maximum) {Sec. 53601 (j)(1)(2)}
• Reverse repurchase agreements (92-days maximum, 20% maximum) {Sec. 53601 (j)(3)(B)(C)}
• Medium term notes of corporations or licensed depository institutions (5-year maximum) (30% maximum) {Sec. 53601(k)}
• Mutual funds that invest only in State of California authorized investments (20% maximum combined with 53601(k)(5) below {Sec. 53601 (k)(5)} • SEC-registered money market mutual funds (20% maximum combined with Sec.53601 (k)(5) above {Sec. 53601 (k)(5)}
• Asset-backed and mortgage-backed securities (20% maximum) {Sec.53601 (5),(o), Sec. 53651 & Sec. 53652}
• Shares of beneficial interest issued by a joint powers authority that invests only in State of California authorized investments {Sec. 53601 (p)} However, the City of Lomita limits its investments to the following vehicles:
• Securities of the U.S. Government, or its agencies (US T-Bills, US T-Notes, Federal Agency Issues such as FICB’s, FFCB’s, FLB’s, FHLB’s, FNMA’s, SBA’s, GNMA’s, TVA’s, and SALLIE MAE’s)
• Certificates of deposit
• Negotiable certificates of deposit
• Corporate Medium-Term Notes
• Commercial Paper rated A-1 by Standard & Poor’s Corporation or P-1 by Moody’s Commercial Paper Record
• Banker’s Acceptances
• Local Agency Investment Fund (LAIF)
• Passbook savings demand deposits
• Mutual funds that invest only in State of California authorized investments • SEC-registered money market mutual funds
• The Investment Trust of California (CalTRUST), a joint powers authority that invests only in State of California authorized investments Any newly developed derivative of an allowable investment that is not specifically mentioned in this policy must be recommended by the City Manager for inclusion in the policy. Any amendments to the policy must be submitted to the City Council for review and approval.
XI. INVESTMENT POOLS AND MUTUAL FUNDS
A thorough investigation of the pool/fund is required prior to investing, and on a continual basis. There shall be a questionnaire developed which will answer the following general questions:
Tuesday, June 16, 2026 Reg CC MTG, Page *399
• A description of eligible investment securities, and a written statement of investment policy and objectives.
• A description of interest calculations and how it is distributed, and how gains and losses are treated.
• A description of how securities are safeguarded (including the settlement processes), and how often the securities are priced, and the program audited. • A description of who may invest in the program, how often, and what size deposit and withdrawal are allowed.
• A schedule for receiving statements and portfolio listings. • A determination of whether reserves, retained earnings, etc. are utilized by the pool. • A fee schedule and when and how it is assessed.
• A determination of whether the pool is eligible for bond proceeds and/or will it accept such proceeds.
XII. PROHIBITED INVESTMENTS
Pursuant to Government Code Section 53601.6, local agencies are prohibited from making investments in the following vehicles:
• Inverse floaters
• Range notes
• Mortgage-derived interest-only strips
• Zero-interest coupon securities
The City further limits investments by expressly prohibiting direct investments in the following:
• Stocks
• Futures and options
• Asset-backed and mortgage-backed securities
• Repurchase agreements
• Reverse repurchase agreements
• Leveraged investments of any kind
• Derivative securities
XIII. DIVERSIFICATION
The City of Lomita will diversify its investments by security type and institution. Securities purchases and holdings are maintained within statutory limits imposed by the California Government Code. The City further limits its investments as follows (as a percentage of the overall portfolio):
Savings Account No limit
U.S. Treasury Bills 60%
U.S. Treasury Notes 40%
Federal Agency Securities 20%
The Local Agency Investment Fund $40,000,000
Negotiable CDs 50%
Non-Negotiable CDs 30%
Bankers’ Acceptances 40%
Commercial Paper 25%
Tuesday, June 16, 2026 Reg CC MTG, Page *400
XIV. MAXIMUM MATURITIES
To the extent possible, the City of Lomita will attempt to match its investments with anticipated cash flow requirements. Unless matched to a specific cash flow, and with prior City Council approval, the City will not directly invest in securities maturing more than five (5) years from the date of purchase.
XV. REVIEWING AND MONITORING OF THE PORTFOLIO
The City Manager shall establish an annual process of independent review by an external auditor. This review will provide internal control by assuring compliance with policies and procedures.
XVI. PERFORMANCE STANDARDS
The investment portfolio shall be designed with the objective of obtaining a rate of return throughout budgetary and economic cycles, commensurate with the investment risk constraints and the cash flow needs.
The City’s investment strategy is passive. Given this strategy, the basis used by the City Manager to determine whether market yields are being achieved shall be to compare to the Average Federal Funds Rate.
XVII. REPORTING
The City Manager shall render a monthly investment report to the City Council. The report shall include the types of investment, issuer names, dates of maturity, par amounts, dollar amounts, market values, and such other data as may be required by the City Council. The report shall also include a statement denoting the ability of the City to meet its expenditure requirements for the ensuing six (6) months, and a statement that the City’s investment portfolio is in compliance with the City’s Investment Policy. {Sec. 53646 (b)} XVIII. INVESTMENT POLICY ADOPTION
The City’s investment policy shall be adopted by resolution of the City Council of the City of Lomita. The policy shall be reviewed annually by the City Council and any modifications made thereto must be approved by the City Council.
Tuesday, June 16, 2026 Reg CC MTG, Page *401
Tuesday, June 16, 2026 Reg CC MTG, Page *402
APPENDIX A: INVESTMENT POLICY TERMINOLOGY
Authorized Financial Dealers and Institutions: Security brokers and financial institutions authorized to provide investment services to local government.
Collateralization: Process by which a borrower pledges securities, property, or other deposits for the purpose of securing repayment of a loan and/or security.
Diversification: Dividing investment funds among a variety of security types by sector, maturity, credit rating, and structure. This reduces exposure to risk by combining a variety of investments, which are unlikely to move in the same direction.
Federal Deposit Insurance Corporation (FDIC): A federal agency that insures bank deposits, currently up to $250,000 per deposit.
Federal Reserve System: The central bank of the United States created by Congress and consisting of a seven-member Board of Governors in Washington, D.C., 12 regional banks and about 5,700 commercial banks that are members of the system.
Internal Controls: The system used to ensure that the local government assets are protected from loss, theft, or misuse. Examples include separation of duties, delegation of authority, and documentation.
Investment Parameters: Specified restrictions on investments to limit the amount of risk in a portfolio.
Investment Types: A list of investments the local agency has been given authority in which to invest as listed under California Government Code Section 53601.
Liquidity: A liquid asset is one that can be converted easily and rapidly into cash without a substantial loss of value.
Maximum Maturities: California law states local governments cannot make investments with terms in excess of 5 years unless receiving authority from their legislative body.
Portfolio: Collection of securities held by an investor.
Reporting Methods: Ways that investment outcomes are reported including listing of instrument values, dollar value returns, percentage yields, etc.
Safekeeping and Custody: Rules derived to ensure the safety of an investment and within whose control the investment resides.
Securities & Exchange Commission (Sec): Agency created by Congress to protect investors in securities transactions by administering securities legislation.
Yield: The rate of annual income returns on investment, expressed as a percentage.
Tuesday, June 16, 2026 Reg CC MTG, Page *403
RESOLUTION NO. 2026-32
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LOMITA,
CALIFORNIA CONFIRMING THE FACTORS USED FOR
CALCULATING THE ANNUAL APPROPRIATION LIMIT FOR FISCAL
YEAR COMMENCING JULY 1, 2026, AND ENDING JUNE 30, 2027
THE CITY COUNCIL OF THE CITY OF LOMITA, CALIFORNIA RESOLVES, DECLARES, DETERMINES AND ORDERS AS FOLLOWS:
SECTION 1. Recitals:
1. The voters of California on November 6, 1979, added Article XIIIB (Proposition 4) to the State Constitution placing various limitations on the appropriations of the state and local governments.
2. The voters of California in June 1990 modified Article XIIIB by approving Proposition 111 and SB 88 (Chapter 60/90) which revised the annual adjustment factors to be applied to the 1986-87 Limit and each year thereafter.
3. Pursuant to the above and Government Code sections 7900 et seq. the City must annually select by a recorded vote of the City Council its change:
a. In the cost of living between (1) the percentage change in California per capita personal income from the preceding year or (2) the percentage change in the local assessment roll from the preceding year due to the addition of local nonresidential construction in the city. b. In population between the percentage change in (1) the City’s own population change or (2) the entire county’s population; and
4. The City of Lomita has complied with all the provisions of Article XIIIB and Government Code section 7900 et seq. in determining the Appropriations limit for the Fiscal Year 2026-2027.
5. The documentation used in determining the City’s appropriations limit and other necessary and related determinations has been available to the public for at least 15 days prior to the City Council meeting where this resolution was adopted.
SECTION 2. The appropriations limit for the City of Lomita for the Fiscal Year 2026- 2027 is hereby set to be $40,325,885.
SECTION 3. The change in cost of living factor being used to calculate the Fiscal Year 2026-2027 appropriations limit is hereby set to be the change in California per capita personal income.
Tuesday, June 16, 2026 Reg CC MTG, Page *404
Resolution No. 2026-32
SECTION 4. That the change in population factor being used to calculate the Fiscal Year 2024-2025 appropriations limit is hereby set to be the population percentage change for the City of Lomita.
SECTION 5. This Resolution is effective immediately upon adoption.
SECTION 6. To the extent any provision of this Resolution is incompatible with or at variance with any prior adopted resolution, the provisions of this Resolution take precedence, and all previous resolutions will be interpreted to harmonize with and not conflict with the provisions of this Resolution.
SECTION 7. The City Clerk shall certify the adoption of this resolution and certify this record to be a full, true, and correct copy of the action taken.
PASSED, APPROVED AND ADOPTED, this 16th day of June 2026. ________________________________
Cindy Segawa, Mayor
ATTEST:
_____________________________________
Kathleen Horn Gregory, MMC, City Clerk
APPROVED AS TO FORM:
______________________________
Trevor Rusin, City Attorney
Tuesday, June 16, 2026 Reg CC MTG, Page *405
RESOLUTION NO. 2026-33
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LOMITA, CALIFORNIA, AMENDING RESOLUTION NO. 81-56, AND ESTABLISHING A
COMPENSATION PLAN FOR EMPLOYEES FOR THE FISCAL YEAR
COMMENCING JULY 1, 2026, AND ENDING JUNE 30, 2027
THE CITY COUNCIL OF THE CITY OF LOMITA, CALIFORNIA RESOLVES, DECLARES, DETERMINES AND ORDERS AS FOLLOWS:
SECTION 1. Recitals:
1. Section 37206 of the California Government Code requires the City Council to prescribe the time and method of paying salaries and wages of officers and employees of the City.
2. The City Council has determined that it is necessary for the efficient operation and management of the City that rules and regulations be established prescribing sick leave, vacation, leaves of absence and other regulations for the employees and officers of the City.
3. It is necessary from time to time to establish comprehensive wage and salary schedules and to fix the rates and compensation to be paid officers and employees of the City as well as other regulations.
4. Resolution 81-56, as amended, sets forth the Rules and Regulations regarding the payment of salaries, sick leaves, vacations, leaves of absence and other regulations related to full-time employees of the City.
SECTION 2. The salary schedule and the authorized positions and salary range schedule listed in Section IV of Resolution 81-56 is hereby amended as indicated on the attached Exhibit A for the fiscal year commencing on July 1, 2026 and ending on June 30, 2027.
SECTION 3. This Resolution is effective immediately upon adoption.
SECTION 4. To the extent any provision of this Resolution is incompatible with or at variance with any prior adopted resolution, the provisions of this Resolution take precedence, and all previous resolutions will be interpreted to harmonize with and not conflict with the provisions of this Resolution.
SECTION 5. The City Clerk shall certify the adoption of this resolution and certify this record to be a full, true, and correct copy of the action taken.
Tuesday, June 16, 2026 Reg CC MTG, Page *406
Resolution No. 2026-33
PASSED, APPROVED AND ADOPTED this 16th day of June 2026. ______________________________
Cindy Segawa, Mayor
ATTEST:
_____________________________________
Kathleen Horn Gregory, MMC, City Clerk
APPROVED AS TO FORM:
______________________________
Trevor Rusin, City Attorney
Tuesday, June 16, 2026 Reg CC MTG, Page *407
CITY OF LOMITA - FISCAL YEAR 2026-2027
SECTION IV - AUTHORIZED FULL TIME POSITIONS AND SALARY SCHEDULES Department Position Title Salary Schedule F/T
City Manager's City Councilmembers N/A N/A
City Manager N/A 1
Assistant City Manager 74 1
City Clerk 52 1
Community Safety Manager 53 1
Senior Management Analyst 45 1
Deputy City Clerk 37 1
Executive Assistant 37 1
Community Safety Supervisor 38 1
Administrative Analyst 33 1
Total Department 9
Administrative Services Deputy City Manager/Administrative Services Director 72 1 Human Resources Manager 57 1
Senior Accountant 48 1
Payroll Accountant 42 1
Human Resources Analyst 42 1
Accounting Technician 27 1
Accounting Assistant 24 2
Total Department 8
Community DevelopmentCommunity & Economic Development Director 68 1 Associate Planner 44 2
Code Enforcement Supervisor 41 1
Assistant Planner 36 1
Code Enforcement Officer II 35 1
Total Department 6
Parks & Recreation Parks & Recreation Director 66 1
Recreation Supervisor (1 underfilled as Rec Coord.) 39 2 Recreation Coordinator 30 1
Administrative Assistant 24 1
Total Department 5
Public Works Public Works Director 70 1
Senior Civil Engineer 55 1
Water Systems Superintendent 56 1
Public Works Operations Manager 54 1
Associate Engineer 49 1
Senior Management Analyst 45 1
PW Field Supervisor 41 1
PW Lead Worker Facilities 36 1
PW Lead Worker Park Maintenance 36 1
PW Lead Worker Streets & Trees 36 1
PW Lead Worker Water Distribution 36 1
PW Lead Worker Water Treatment 36 1
Water Treatment Plant Operator 35 1
Administrative Analyst 33 1
Engineering Technician 35 1
Water Service Technician II 27 2
Maintenance Worker II 24 5
Water Service Technician I 23 2
Maintenance Worker I 20 4
Total Department 28
Total City 56
Tuesday, June 16, 2026 Reg CC MTG, Page *408
SCHED. NO. Step 1 Step 2 Step 3 Step 4 Step 5
City Council N/A N/A N/A N/A 1,014
City Manager N/A N/A N/A N/A 262,500
6 3,057 3,210 3,370 3,539 3,716
7 3,133 3,290 3,455 3,627 3,809
8 3,212 3,372 3,541 3,718 3,904
9 3,292 3,457 3,630 3,811 4,002
10 3,374 3,543 3,720 3,906 4,102
11 3,459 3,632 3,813 4,004 4,204
12 3,545 3,722 3,909 4,104 4,309
13 3,634 3,816 4,006 4,207 4,417
14 3,725 3,911 4,106 4,312 4,527
15 3,818 4,009 4,209 4,420 4,641
16 3,913 4,109 4,314 4,530 4,757
17 4,011 4,212 4,422 4,643 4,876
18 4,111 4,317 4,533 4,759 4,997
19 4,214 4,425 4,646 4,878 5,122
20 4,320 4,535 4,762 5,000 5,250
21 4,428 4,649 4,881 5,125 5,382
22 4,538 4,765 5,003 5,254 5,516
23 4,652 4,884 5,128 5,385 5,654
24 4,768 5,006 5,257 5,519 5,795
25 4,887 5,131 5,388 5,657 5,940
26 5,009 5,260 5,523 5,799 6,089
27 5,135 5,391 5,661 5,944 6,241
28 5,263 5,526 5,802 6,092 6,397
29 5,394 5,664 5,947 6,245 6,557
30 5,529 5,806 6,096 6,401 6,721
31 5,668 5,951 6,249 6,561 6,889
32 5,809 6,100 6,405 6,725 7,061
33 5,955 6,252 6,565 6,893 7,238
34 6,103 6,409 6,729 7,065 7,419
35 6,256 6,569 6,897 7,242 7,604
36 6,412 6,733 7,070 7,423 7,794
37 6,573 6,901 7,246 7,609 7,989
38 6,737 7,074 7,428 7,799 8,189
39 6,905 7,251 7,613 7,994 8,394
40 7,078 7,432 7,804 8,194 8,603
41 7,255 7,618 7,999 8,399 8,818
42 7,436 7,808 8,199 8,609 9,039
43 7,622 8,003 8,404 8,824 9,265
44 7,813 8,203 8,614 9,044 9,497
45 8,008 8,409 8,829 9,270 9,734
46 8,208 8,619 9,050 9,502 9,977
City of Lomita - Salary Schedule (Monthly)
Effective July 1, 2026 - June 30, 2027
Tuesday, June 16, 2026 Reg CC MTG, Page *409
SCHED. NO. Step 1 Step 2 Step 3 Step 4 Step 5
47 8,414 8,834 9,276 9,740 10,227
48 8,624 9,055 9,508 9,983 10,482
49 8,839 9,281 9,746 10,233 10,744
50 9,060 9,514 9,989 10,489 11,013
51 9,287 9,751 10,239 10,751 11,288
52 9,519 9,995 10,495 11,020 11,571
53 9,757 10,245 10,757 11,295 11,860
54 10,001 10,501 11,026 11,577 12,156
55 10,251 10,764 11,302 11,867 12,460
56 10,507 11,033 11,584 12,164 12,772
57 10,770 11,309 11,874 12,468 13,091
58 11,039 11,591 12,171 12,779 13,418
59 11,315 11,881 12,475 13,099 13,754
60 11,598 12,178 12,787 13,426 14,098
61 11,888 12,483 13,107 13,762 14,450
62 12,185 12,795 13,434 14,106 14,811
63 12,490 13,114 13,770 14,459 15,182
64 12,802 13,442 14,114 14,820 15,561
65 13,122 13,778 14,467 15,191 15,950
66 13,450 14,123 14,829 15,570 16,349
67 13,787 14,476 15,200 15,960 16,758
68 14,131 14,838 15,580 16,359 17,177
69 14,485 15,209 15,969 16,768 17,606
70 14,847 15,589 16,368 17,187 18,046
71 15,218 15,979 16,778 17,617 18,497
72 15,598 16,378 17,197 18,057 18,960
73 15,988 16,788 17,627 18,508 19,434
74 16,388 17,207 18,068 18,971 19,920
75 16,798 17,638 18,519 19,445 20,418
76 17,218 18,078 18,982 19,931 20,928
77 17,648 18,530 19,457 20,430 21,451
78 18,089 18,994 19,943 20,941 21,988
79 18,541 19,469 20,442 21,464 22,537
80 19,005 19,955 20,953 22,001 23,101
81 19,480 20,454 21,477 22,551 23,678
82 19,967 20,965 22,014 23,114 24,270
83 20,466 21,490 22,564 23,692 24,877
84 20,978 22,027 23,128 24,285 25,499
85 21,502 22,577 23,706 24,892 26,136
86 22,040 23,142 24,299 25,514 26,790
87 22,591 23,720 24,907 26,152 27,459
88 23,156 24,313 25,529 26,806 28,146
89 23,735 24,921 26,167 27,476 28,850
90 24,328 25,544 26,822 28,163 29,571
Tuesday, June 16, 2026 Reg CC MTG, Page *410
RESOLUTION NO. 2026-34
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LOMITA, CALIFORNIA,
AMENDING THE PART-TIME AND TEMPORARY EMPLOYMENT POLICY AND COMPENSATION PLAN, ADOPTED IN RESOLUTION NO. 2026-03, AND ESTABLISHING AUTHORIZED POSITIONS AND A SALARY SCHEDULE FOR PARTTIME AND TEMPORARY EMPLOYEES FOR FISCAL YEAR COMMENCING JULY 1, 2026 AND ENDING JUNE 30, 2027
THE CITY COUNCIL OF THE CITY OF LOMITA, CALIFORNIA RESOLVES, DECLARES, DETERMINES AND ORDERS AS FOLLOWS:
SECTION 1. Recitals:
1. Section 37206 of the California Government Code requires the City Council to prescribe the time and method of paying salaries and wages of officers and employees of the City.
2. Lomita Municipal Code Title II, Administration, Chapter 14 Personnel System does not include part-time and temporary employees in the competitive service.
3. It is necessary from time to time to establish comprehensive wage and salary schedules and to fix the rates and compensation to be paid part-time and temporary employees of the City as well as other regulations.
SECTION 2. The part-time and temporary classes as set forth in this Resolution, shall be designated as non-competitive classes, and shall not be eligible to participate in any benefit programs of the City unless otherwise indicated in this Resolution.
AUTHORIZED PART-TIME AND TEMPORARY POSITIONS
Department Position Title Salary
Schedule
Administrative
Services Office Assistant 112
City Manager Office Assistant 112
Community Safety Officer 119
Community
Development Planning Intern 101
Recreation Leader 101
Maintenance Aide 107
Parks &
Recreation
Assistant Recreation Coordinator 109
Engineering Intern 101
Maintenance Aide 107
Public Works
Water Intern 101
Various PT Positions Not Listed Varies
Tuesday, June 16, 2026 Reg CC MTG, Page *411
Resolution No. 2026-34
SECTION 3. The Employment Policy for part-time and temporary employees as established by this Resolution shall be in effect immediately upon adoption.
SECTION 4. DEFINITION OF TERMS.
A. Part-time shall mean those positions assigned a schedule of less than 1,000 hours per fiscal year on a re-occurring basis.
B. Temporary shall mean a temporary appointment to a temporary assignment for a set period of time, not to exceed one year. A temporary assignment shall have a predetermined beginning and end date, with prior approval by the City Manager or his/her designee. Employees on a temporary assignment may be allowed to work up to 80 hours in a pay period, with prior approval and authorization from the City Manager or his/her designee. In no case shall a temporary employee work in excess of 1,000 hours in a fiscal year.
C. Dual Classification shall mean when an employee is working part-time in two different classifications. Employees working in two different classifications are limited to a combined total of less than 1,000 hours in a fiscal year. If two different departments are involved, both departments must mutually agree. It is the responsibility of the employee to inform each department of other City employment.
SECTION 5. WAGE INCREASES. Part-time employees are eligible for wage increases within the pay range for the class to which the employee is appointed. Wage increases shall not exceed the maximum pay rate as set forth in the pay range for the class and shall be based upon any of the following:
A. Completion of one year of work for the City and satisfactory performance as documented in the employee’s annual performance review and thereafter on an annual basis subject to satisfactory performance reviews; B. A significant increase in the employee’s duties and responsibilities justified and documented by the department head and approved by the City Manager or his/her designee.
C. Under unusual circumstances, justified and documented by the department head and approved by the City Manager or his/her designee.
SECTION 6. OVERTIME. For those employees working in a classification eligible under the Fair Labor Standards Act (FLSA), work performed in excess of 40 straight-time hours in a work period shall be deemed overtime and paid at the overtime rate of 1.5 times the employee’s regular rate of pay. Notwithstanding emergency situations or special occurrences, it shall be the general policy to discourage overtime work by part-time and temporary employees. All overtime must be approved by the City Manager.
SECTION 7. SAFETY EQUIPMENT AND UNIFORMS. Safety equipment and uniforms required by the City to be used or worn by part-time and temporary employees shall be provided or paid for by the City.
Tuesday, June 16, 2026 Reg CC MTG, Page *412
Resolution No. 2026-34
SECTION 8. RETIREMENT PLAN. Upon hire, the employee shall be enrolled in the International City Management Association – Retirement Corporation (ICMA-RC) PTS deferred compensation plan, the retirement plan for part-time and temporary employees.
A 7.5% mandatory employee contribution will be deducted from the employee’s paycheck.
SECTION 9. HOURLY SALARY SCHEDULE. The salary schedule and authorized parttime and temporary positions are hereby approved as indicated in Attachment A.
SECTION 10. PAID SICK LEAVE. Beginning on July 1, 2015, part-time and temporary employees who work 30 days or more within a year of beginning employment and annually thereafter shall be eligible to accrue and take paid sick leave. Part-time employees shall adhere to the existing Sick Leave Policy within the Lomita Personnel Rules, with the exception of the policies listed below:
A. Employees shall accrue sick leave at the rate of one hour of paid sick leave for every 30 hours worked.
B. Accumulated sick leave shall be capped at 80 hours.
SECTION 11. This resolution will become effective immediately upon adoption.
SECTION 12. The City Clerk shall attest and certify to the passage and adoption of this Resolution and thereupon the same shall take effect and be in force and effect in accordance with its terms.
PASSED, APPROVED AND ADOPTED this 16th day of June 2026. ________________________________
Cindy Segawa, Mayor
ATTEST:
_____________________________________
Kathleen Horn Gregory, MMC, City Clerk
APPROVED AS TO FORM:
______________________________
Trevor Rusin, City Attorney
Tuesday, June 16, 2026 Reg CC MTG, Page *413
CITY OF LOMITA
PART-TIME AND TEMPORARY EMPLOYEE HOURLY SALARY SCHEDULE Effective July 1, 2026 - June 30, 2027
Schedule No. Step 1 Step 2 Step 3 Step 4 Step 5
101 17.50 18.38 19.29 20.26 21.27
102 17.94 18.83 19.78 20.76 21.80
103 18.39 19.31 20.27 21.28 22.35
104 18.85 19.79 20.78 21.82 22.91
105 19.32 20.28 21.30 22.36 23.48
106 19.80 20.79 21.83 22.92 24.07
107 20.29 21.31 22.37 23.49 24.67
108 20.80 21.84 22.93 24.08 25.28
109 21.32 22.39 23.51 24.68 25.92
110 21.86 22.95 24.10 25.30 26.57
111 22.40 23.52 24.70 25.93 27.23
112 22.96 24.11 25.32 26.58 27.91
113 23.54 24.71 25.95 27.25 28.61
114 24.12 25.33 26.60 27.93 29.32
115 24.73 25.96 27.26 28.62 30.06
116 25.35 26.61 27.94 29.34 30.81
117 25.98 27.28 28.64 30.07 31.58
118 26.63 27.96 29.36 30.83 32.37
119 27.29 28.66 30.09 31.60 33.18
120 27.98 29.38 30.84 32.39 34.01
121 28.68 30.11 31.62 33.20 34.86
122 29.39 30.86 32.41 34.03 35.73
123 30.13 31.63 33.22 34.88 36.62
Salary
Schedule
112
112
119
101
101
109
101
107
101
Various Varies
Department
Planning Intern
Recreation Leader
Maintenance Aide
City Manager Office Assistant
Community Safety Officer
PT Positions Not Listed
AUTHORIZED PART-TIME AND TEMPORARY POSITIONS
Public Works Engineering Intern
Water Intern
Parks & Recreation
Community Development
Position Title
Administrative Services Office Assistant
Assistant Recreation Coordinator
Tuesday, June 16, 2026 Reg CC MTG, Page *414
1 TO: City Council
FROM: Andrew Vialpando, City Manager
PREPARED BY: Deanna Fraley, PE, Public Works Director
MEETING DATE: June 16, 2026
SUBJECT: Adoption of the 2025 Urban Water Management Plan
RECOMMENDED ACTION
Conduct a public hearing and receive comments on the Draft 2025 Urban Water Management Plan and Water Shortage Contingency Plan; Adopt Resolution 2026-35 approving the Water Shortage Contingency Plan; Adopt Resolution 2026-36 approving the 2025 Urban Water Management Plan; Authorize staff to make non-substantive revisions, as necessary, in response to public comments and final Department of Water Resources review; and, Direct staff to submit the adopted 2025 Urban Water Management Plan and Water Shortage Contingency Plan to the California Department of Water Resources.
BACKGROUND
The California Urban Water Management Planning Act (California Water Code Sections 10610 through 10656) was enacted in 1983 to promote long-term water supply planning and resource management throughout California. The Act requires urban water suppliers to update their Urban Water Management Plans (UWMP) ever five years and submit the adopted plans to the California Department of Water Resources (DWR).
The City of Lomita has previously prepared and adopted UWMPs in 2010, 2015, and 2020. The 2025 UWMP updates the City’s previous planning assumptions and incorporates current regulatory requirements, water supply information, conservation objectives, and drought response planning measures.
To prepare the 2025 UWMP, the City entered a cost-sharing agreement with West Basin Municipal Water District (WBMWD) and retained Water Systems Consulting, Inc. The
CITY OF LOMITA
CITY COUNCIL REPORT
Item No. 9b
Tuesday, June 16, 2026 Reg CC MTG, Page *415
2 Plan was developed in coordination with WBMWD, Metropolitan Water District of Southern California (MWD), and other regional water agencies to ensure consistency with regional water supply planning efforts.
The UWMP serves as an important planning resource for future development review, Water Supply Assessments (SB 610), Written Verifications of Water Supply (SB 221), capital improvement planning, and future General Plan updates.
DISCUSSION
2025 Urban Water Management Plan
The 2025 UWMP evaluates the City’s water system, projected population growth, water demands, available water supplies, conservation programs, and long-term water supply reliability through the year 2050.
The City currently serves approximately 19,600 residents within its water service area.
Water supplies consist of local groundwater production from the West Coast Groundwater Basin and imported water purchased through West Basin Municipal Water District. The Plan projects modest increases in water demand over the planning horizon and incorporates anticipated population growth, future development, conservation savings, and system water losses.
The 2025 UWMP concludes that the City will maintain adequate water supplies to meet projected demands under normal, single-dry-year, and multiple-dry-year conditions throughout the planning period. The analysis also concludes that the City is expected to maintain reliable water service during a five-year drought scenario based on current planning assumptions and regional supply forecasts.
Water Shortage Contingency Plan
State law requires urban water suppliers to prepare and maintain a Water Shortage Contingency Plan (WSCP) as part of the UWMP process. The WSCP establishes a framework for responding to water supply shortages resulting from drought, infrastructure failures, regulatory actions, or other emergencies.
The City’s WSCP incorporates the six-stage shortage response framework required by California Water Code Section 10632 and identifies corresponding demand reduction targets, response measures, communication strategies, and enforcement actions.
Aligning the City’s shortage response levels with those of regional wholesale agencies improves coordination and provides consistent messaging to customers during drought conditions. The WSCP is included as Appendix C of the 2025 UWMP and must be submitted to DWR within 30 days of adoption.
Key Updates from the 2020 UWMP
Tuesday, June 16, 2026 Reg CC MTG, Page *416
3 The 2025 UWMP builds upon the City’s adopted 2020 UWMP and includes several significant updates.
Updated Population and Water Demand Projections
The Plan updates population forecasts, land use assumptions, and water demand projects though the year 2050. Demand forecasts reflect current development trends, Regional Housing Needs Allocation requirements, recent water use patterns, and anticipated conservation savings.
Compliance with New State Water Efficiency Standards
The 2025 UWMP incorporates California’s evolving water-use efficiency framework and updated conservation requirements established under the State’s “Making Conservation a California Way of Life” initiative. These requirements were not fully implemented during preparation of the 2020 UWMP.
Additionally, Senate Bill 606 and Assembly Bill 1668 were adopted in 2025 by the SWRCB and established a unique Urban Water Use Objective (UWUO) for each urban retail water supplier in California. The UWUO consists of water use budgets for residential indoor use, residential outdoor use, commercial, industrial, and institutional (CII) dedicated irrigation meter outdoor use, and real water loss. The 2025 UWMP incorporates these new UWUO efficiency standards in the calculations and forecasting for water use demand projections.
Ground Water Supply Restoration
Since adoption of the 2020 UWMP, the Cit has advanced rehabilitation of its groundwater production facilities and construction groundwater treatment improvements. The 2025 UWMP reflects the anticipated return of significant local groundwater production, which will reduce reliance on imported water supplies and improve long-term supply reliability.
Updated Reliability and Drought Analysis
The Plan includes updated reliability assessments utilizing the latest planning information from WBMWD and MWD. The updated analysis confirms that projected supplies are sufficient to meet projected demands under normal and drought conditions.
Enhanced Water Shortage Contingency Planning
The WSCP has been updated to reflect current State requirements and planning methodologies. The updated framework strengthens the City’s ability to respond to future droughts and water supply emergencies while maintaining consistency with regional suppliers.
Modernized Planning and Reporting Requirements
Tuesday, June 16, 2026 Reg CC MTG, Page *417
4 The 2025 UWMP incorporates updated DWR guidance, standardized reporting requirements, drought risk assessment methodologies, water loss reporting, and energyuse reporting requirements that have evolved since preparation of the 2020 UWMP.
Public Outreach
In accordance with California Water Code requirements, notices regarding the availability of the Draft UWMP and WSCP and the public hearing were published in the Daily Breeze on May 30, 2026, and June 6, 2026. Copies of the draft documents were made available for public review prior to the public hearing. The public hearing provides an opportunity for interested parties to review the draft documents and provide comments prior to adoption by the City Council.
ENVIRONMENTAL REVIEW
California Water Code Section 10652 provides that the California Environmental Quality Act (CEQA) does not apply to the preparation and adoption of Urban Water Management Plans or to projects implementing such plans under Water Code Section 10632.
FISCAL IMPACT
None.
VISION, MISSION, VALUES, AND STRATEGIC OUTCOMES
The City’s Vision, Mission, and Values set the standard for the organization, establish priorities, uniformity and guidelines; and provide the framework for policy decision making. The Strategic Outcomes were implemented to provide a pathway to achieving the City’s Vision. This item aligns with Strategic Outcome No. 5: City Infrastructure & Water Utility – Investing in reliable, sustainable infrastructure.
OPTIONS
Approve recommended action.
ATTACHMENTS
1. Resolution 2026-35
2. Resolution 2026-36
Reviewed by: Approved by:
.
_______________________ ______________________
Deanna Fraley, PE Andrew Vialpando
Public Works Director City Manager
Tuesday, June 16, 2026 Reg CC MTG, Page *418
5 Tuesday, June 16, 2026 Reg CC MTG, Page *419
RESOLUTION NO. 2026-35
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LOMITA,
CALIFORNIA, ADOPTING A WATER SHORTAGE CONTINGENCY
PLAN AND FINDING THE ACTION TO BE EXEMPT FROM THE
CALIFORNIA ENVIRONMENTAL QUALITY ACT
THE CITY COUNCIL OF THE CITY OF LOMITA, CALIFORNIA, DOES HEREBY FIND, ORDER AND RESOLVE AS FOLLOWS:
SECTION 1. Recitals.
A. The California Water Code Section 10632 requires every urban water supplier to prepare and adopt a Water Shortage Contingency Plan (WSCP) as part of its Urban Water Management Plan (UWMP).
B. The City of Lomita is an urban supplier of water to a population of over 20,000.
C. The City has prepared a UWMP which will be adopted per Resolution No. 2026-36 simultaneous with this resolution.
D. State Senate Bill 606 passed in 2018 has amended the Water Code related to the requirements of WSCPs to include six standard stages for water shortages up to and beyond 50 percent.
E. The City has updated its WSCP in accordance with these changes in the Water Code, and said WSCP is included as part of the UWMP.
F. The conservation of water is critically important if the City is to sustain itself; and the effective and equitable management of limited water supplies during a water shortage minimizes the impact on the people and the economy of the City of Lomita.
G. The City of is granted the authority by State Water Code Section 350 and City of Lomita Municipal Code Chapter 12-4.01 to declare a water supply shortage and to adopt by resolution regulations and restrictions on the delivery and consumption of water.
H. The City has therefore, prepared and circulated for public review a draft UWMP, and held a properly noticed public hearing before the City Council regarding said UWMP, on June 16, 2026, wherein the WSCP was also presented in the public hearing.
I. The City will file said WSCP with the California Department of Tuesday, June 16, 2026 Reg CC MTG, Page *420
Resolution No. 2026-35
Water Resources within 30 days of adoption.
J. The City will make the WSCP available to its customers, the public and Los Angeles County no later than 30 days after adoption of the WSCP.
SECTION 2. The City Council finds that the City is in conformance with all applicable requirements of the Water Code.
SECTION 3. The City Council hereby adopts the WCSP, attached hereto as Exhibit A, and as referenced in the City's 2025 Urban Water Management Plan, and orders it to be kept on file in the office of the City Clerk.
SECTION 4. The Public Works Director is hereby authorized and directed to submit the WCSP, along with the 2025 Urban Water Management Plan, to the State of California Department of Water Resources within 30 days of the adoption of this resolution.
SECTION 5. The Council finds and determines that, pursuant to California Water Code section 10652, the adoption of the Water Shortage Contingency Plan and this Resolution does not constitute a project under the California Environmental Quality Act, and no environmental assessment is required.
SECTION 6. The City Clerk shall attest and certify to the passage and adoption of this Resolution and thereupon the same shall take effect immediately.
PASSED, APPROVED AND ADOPTED this 16th day of June 2026. ________________________________
Cindy Segawa, Mayor
ATTEST:
Kathleen Horn Gregory, MMC, City Clerk
APPROVED AS TO FORM:
Trevor, Rusin, City Attorney
Tuesday, June 16, 2026 Reg CC MTG, Page *421
Resolution No. 2026-35
Tuesday, June 16, 2026 Reg CC MTG, Page *422
Water Shortage
Contingency Plan
CITY OF LOMITA
MAY 2026 CITY OF LOMITA
Tuesday, June 16, 2026 Reg CC MTG, Page *423
CITY OF LOMITA
Water Shortage
Contingency Plan
UPDATED: MAY 2026
DRAFT
Updated by Water Systems Consulting, Inc.
Tuesday, June 16, 2026 Reg CC MTG, Page *424
Table of Contents
Water Shortage Contingency Plan | ii
TABLE OF CONTENTS
1.0 General Description......................................................................................................... 5
1.1 Water Code Requirements........................................................................................... 5
1.2 Regional Contingency Plans ........................................................................................ 6
2.0 Water Service Reliability Analysis.................................................................................... 6
3.0 Annual Water Supply and Demand Assessment Procedures .......................................... 9
3.1 Decision-making Process............................................................................................. 9
3.2 Key Data Inputs ........................................................................................................... 9
4.0 Health and Safety Needs................................................................................................10
5.0 Water Shortage Stages ..................................................................................................10
6.0 Shortage Response Actions ...........................................................................................11
6.1 City Response Actions & Operational Changes ..........................................................12
6.2 Prohibitions on End Use .............................................................................................13
7.0 Disaster Management ....................................................................................................16
7.1 Emergency Response Plan.........................................................................................16
7.2 Seismic Risk ...............................................................................................................18
8.0 Communication Protocols...............................................................................................19
9.0 Compliance and Enforcement ........................................................................................20
10.0 Legal Authority............................................................................................................20
11.0 Financial Consequences of WSCP Implementation ....................................................20
11.1 Impacts to Revenue ................................................................................................21
11.2 Impacts to Reserve Funds.......................................................................................21
12.0 Monitoring and Reporting............................................................................................21
12.1 Monitoring ...............................................................................................................21
12.2 Enforcement............................................................................................................22
12.3 Reporting.................................................................................................................22
13.0 WSCP Refinement Procedures...................................................................................22
13.1 Cyclical Updates......................................................................................................22
13.2 Data Driven Updates ...............................................................................................23
13.3 Externally Driven Updates .......................................................................................23
13.4 WSCP Re-Adoption.................................................................................................23
14.0 Plan Adoption, Submittal, and Availability ...................................................................23 References ...............................................................................................................................24 Tuesday, June 16, 2026 Reg CC MTG, Page *425
List of Figures
Water Shortage Contingency Plan | iii
Appendix A: Water Shortage Contingency Plan Overview ........................................................25 Appendix B: Draft Local Hazard Mitigation Plan........................................................................26 Appendix C: Emergency Operations Plan .................................................................................27
LIST OF FIGURES
Figure 1: Basic Overview of Water Quality Contamination Response for City Well .................... 8 Figure 2: Fault Zones Near the City ..........................................................................................18
LIST OF TABLES
Table 1: Water Fixtures for Health and Safety Personal Use (Gallons Per Day)........................10 Table 2: Water Shortage Stages and Reduction Targets ..........................................................11 Table 3: City Water Shortage Response Actions.......................................................................12 Table 4: City Code Prohibitions on Water Use During Water Shortages ...................................14 Tuesday, June 16, 2026 Reg CC MTG, Page *426
Acronyms & Abbreviations
Water Shortage Contingency Plan | 4
ACRONYMS & ABBREVIATIONS
AMR Automatic Meter Reading
CWC California Water Code
DWR California Department of Water Resources
EOC Emergency Operations Center
EOP Emergency Operations Plan
GPM Gallons Per Minute
LHMP Local Hazard Mitigation Plan
MWD Metropolitan Water District of Southern California
UWMP Urban Water Management Plan
WBMWD West Basin Municipal Water District
WRD Water Replenishment District of Southern California WSCP Water Shortage Contingency Plan
Tuesday, June 16, 2026 Reg CC MTG, Page *427
City of Lomita
Water Shortage Contingency Plan 5
1.0 General Description
This Water Shortage Contingency Plan (WSCP) is a strategic plan that the City of Lomita (City) uses to prepare for and respond to water shortages. A water shortage occurs when the water supply available is insufficient to meet customer water demand at a given point in time. A shortage may occur due to a number of reasons including water supply quality changes, drought, regional power outages, and catastrophic events (e.g., an earthquake, pumping equipment failures, sudden spikes in groundwater contaminants, intentional or accidental manmade catastrophes). Additionally, the State may declare a statewide drought emergency and mandate that water suppliers reduce demands. The WSCP serves as the operating manual that the City will use to prevent catastrophic service disruptions through proactive, rather than reactive, mitigation of water shortages.
Long-term water shortages can be addressed through conservation and supply augmentation.
Short-term water shortages are best handled through a “Contingency Plan.” This WSCP provides a process for an annual water supply and demand assessment and structured steps designed to respond to actual conditions in potential shortages. This level of detailed planning and preparation provides accountability and predictability to help the City maintain reliable supplies and reduce the impact of any supply shortages and/or interruptions.
This WSCP was updated in conjunction with the City’s 2025 Urban Water Management Plan (UWMP) and was based on the City’s 2020 WSCP and UWMP (West & Associates, 2022). This WSCP is a standalone document that can be modified as needed. This document is compliant with the California Water Code (CWC) Section 10632 and incorporates guidance from the State of California Department of Water Resources (DWR) UWMP Guidebook.
The City has legal authority and obligation to implement a WSCP during droughts or sudden supply interruptions. Response actions are codified in the City’s Municipal Code (Section 12-4, Article 1 “Water Use”). Sections 5.0 and 6.0 identify shortage response actions and procedures for declaring a water shortage in accordance with CWC §10632(a)(3)(A).
1.1 Water Code Requirements
As a result of historic droughts and flooding, the following changes were made to the CWC in 2018 that affected WSCPs:
• CWC §10632(a): Every urban water supplier must prepare and adopt a WSCP as part of its UWMP.
• CWC §10632(a)(1): WSCPs must include water supply reliability analysis, including reliability under five consecutive dry years.
• CWC §10632(a)(2): WSCPs must include procedures for conducting annual water supply and demand assessments.
• CWC §10632(a)(3)(A): WSCPs must include six standard shortage stages, including shortages greater than 50 percent of normal water supply.
Tuesday, June 16, 2026 Reg CC MTG, Page *428
City of Lomita
Water Shortage Contingency Plan 6
• CWC §10632(a)(4): WSCPs must include shortage response actions and identify how actions address shortage severity.
• CWC §10632(a)(5): WSCPs must include communication protocols to inform customers and the public of current or predicted shortages.
• CWC §10632(a)(6): WSCPs must describe procedures for ensuring customer compliance and enforcement mechanisms for shortage responses. • CWC §10632(a)(7) (A)-(C): WSCPs must describe the legal authority that empowers enforcement and include statements that the supplier will declare a water shortage emergency and coordinate with local government for possible local emergency proclamations.
• CWC §10632(a)(8) (A)-(C): WSCPs must include financial impacts of drought shortages, mitigation strategies to address impacts, and include cost of compliance. • CWC §10632(a)(9): WSCPs must define monitoring and reporting procedures for compliance tracking and reporting to the State.
• CWC §10632(a)(10): WSCPs must include evaluation procedures and a process to adjust the WSCP as needed.
• CWC §10632(b):
Additional actions affecting WSCPs include State Water Resources Control Board Resolution 2014-0038 and Governor Brown’s Executive Order B-29-15 (2015). The City responded by modifying its Contingency Ordinance (Ordinance No. 678) and continues to follow these requirements.
1.2 Regional Contingency Plans
A significant portion of the City’s water supply comes from West Basin Municipal Water District (WBMWD), which receives water from the Metropolitan Water District of Southern California (MWD). As a result, regional contingency planning plays a key role in local reliability. MWD’s WSCP aligns with its Water Surplus and Drought Management Plan and Water Supply Allocation Plan. These documents provide a framework for managing supplies during surplus and shortage conditions and form the basis for annual supply and demand assessments.
WBMWD operates in conjunction with MWD’s contingency planning. As a member agency, the City’s contingency policies are aligned with WBMWD’s policies and actions. Regional contingency plans and respective response actions are outlined in MWD’s and WBMWD’s 2025 UWMPs and WSCPs.
2.0 Water Service Reliability Analysis
The City’s water supplies include groundwater from the West Coast Groundwater Basin and imported water purchased from WBMWD which is provided by MWD. The reliability of the sources is discussed in Chapter 6 and analyzed in Chapter 7 of the City’s 2025 UWMP.
Tuesday, June 16, 2026 Reg CC MTG, Page *429
City of Lomita
Water Shortage Contingency Plan 7
Locally, imported water is constrained by the availability of supplies from the State Water Project, Colorado River Aqueduct, and other sources at the WBWMD’s disposal. The City purchases wholesale distributed water from WBMWD which is provided by MWD. Groundwater is generally highly reliable and but constrained by the availability of replenishment water to WRD, who manages the West Coast Groundwater Basin. The basin is reliant on recycled water, imported water, and natural runoff captured in the regional spreading grounds for replenishment. Each of these sources has its own constraints; however, WRD’s diversified supply portfolio tends to reduce those constraints. Local groundwater quality has historically been an issue that has resulted in increased reliance on imported water to meet demands.
However, in partnership with WRD, the City has invested heavily in treatment upgrades at the City’s groundwater well to increase quality and reliability of the City’s groundwater supply.
In the event of a loss of groundwater, the City may request additional imported water from WBMWD, subject to availability. The City’s water system includes two imported water connections allowing deliveries of additional available water supplies. MWD, who supplies imported water purchased from WBMWD, describes supply augmentation actions in its 2025 UWMP (MWD, 2026). In the event of a shortage of imported water, groundwater pumping can be increased up to the total pumping right from the groundwater basin, which includes the City’s adjudicated rights, net carryover, leases, and any storage. Groundwater pumping is limited to the capacity of the City’s well and treatment along with any blending requirements. Figure 1 shows a general procedure that the City takes when there are groundwater water quality concerns.
The City’s 2025 UWMP water service reliability assessment and drought risk assessment results indicate that no water shortages are anticipated within the next 25-years under normal, single dry water years, and multiple dry water years. Since a significant portion of the City’s water supply is provided by WBMWD, which in turn is provided through MWD, the reliability analysis is heavily dependent on the reliability analyses of these agencies. The city is dependent on these sources to provide a reliable water supply and works with WBMWD to ensure water reliability in the future.
Tuesday, June 16, 2026 Reg CC MTG, Page *430
City of Lomita
Water Shortage Contingency Plan 8
Figure 1: Basic Overview of Water Quality Contamination Response for City Well Tuesday, June 16, 2026 Reg CC MTG, Page *431
City of Lomita
Water Shortage Contingency Plan 9
3.0 Annual Water Supply and Demand
Assessment Procedures
The City is required to prepare an Annual Water Supply and Demand Assessment (Annual Assessment) and submit an Annual Water Shortage Assessment Report to DWR by July 1 of each year.
3.1 Decision-making Process
City staff review production and consumption data starting in January and present an assessment to City Council by May of each year. The final Annual Assessment is then submitted to DWR by July 1 of each year.
3.2 Key Data Inputs
Annual Assessments are based on metered data from wells and customer meters, available monthly or more frequently using AMR technology. The Annual Assessment uses data to help forecast demand and estimate water supply availability, taking into consideration any known infrastructure constraints. The Annual Assessment also considers weather, population growth, and other influencing factors, such as state or local policies that will impact water demands, or regulations affecting water supplies. The key data inputs staff rely on to complete Annual Assessments include:
1. Estimated dry-year demand without any conservation measures.
2. Estimated total water supply availability under dry-year scenarios. The water supply available will be based on what is available to the City, regardless of pumping capacity.
Groundwater supplies can be estimated from annual WRD Basin Reports and from local groundwater level monitoring by WRD.
3. Estimated capacity of water production infrastructure. Any known or forecasted issues affecting the City’s water production infrastructure will be considered, such as:
a. Mechanical or electrical issues with groundwater well pumps. b. Possible power outages for operation and maintenance. c. New construction and repairs.
The potential constraints on supply capacity listed under Item 3 above are subject to change from year to year. Thus, the City should analyze well conditions before deciding on forecasted groundwater supplies. In addition, the City should coordinate with WBMWD to understand any potential constraints on imported water supplies.
Tuesday, June 16, 2026 Reg CC MTG, Page *432
City of Lomita
Water Shortage Contingency Plan 10
4.0 Health and Safety Needs
In 2018, the State adopted Assembly Bill 1668, which amends Section 10608.20 of the Water Code to stipulate an indoor water use standard of 55 gallons per capita per day. However, this standard is subject to adjustment. Thus, the City is obligated to determine the minimum health and safety water needs for its residents. To assess the minimum amount of water that should be available (1st Priority Level), the amount of personal hygiene household water use must be quantified. Based on common indoor residential water use in the United States, health and safety water use is estimated to be as follows:
Table 1: Water Fixtures for Health and Safety Personal Use (Gallons Per Day) Item Regular Voluntary Conservation
Toilet 14 10.5
Shower 15 12
Washer 12 11
Kitchen 4 3
Other 4 4
Total 49 gal 40.5 gal
Since the City has a population of about 20,000 residents, at a rate of 40 gallons per capita per day, the City will need up to 2.5 acre-feet (0.8 million gallons) per day to provide for the health and safety of its residents (if conservation is voluntary). Since the City’s Cypress Reservoir has a capacity of 5.3 million gallons, the City can provide for nearly one week of water supply to its residents. However, the ability to meet the most basic water needs of its residents during a severe shortage may prove to be difficult unless the City’s citizens are aware of the water supply shortage. Thus, public outreach must be a top priority for the City during a water shortage.
5.0 Water Shortage Stages
The City’s WSCP imposes six (6) stages of response actions based on the severity of the City’s water supply shortage. The stages are based on DWR’s established criteria as shown in Table
2. To reduce potential confusion for City customers, the first four stages (Stages 1 to 4) regulate customer responses to shortages, while the latter two stages (Stages 5 to 6) regulate City water staff response efforts.
Tuesday, June 16, 2026 Reg CC MTG, Page *433
City of Lomita
Water Shortage Contingency Plan 11
Table 2: Water Shortage Stages and Reduction Targets
Shortage Stage Restriction Type Water Supply Reduction Target I Mandatory 10%
II Mandatory 20%
III Mandatory 30%
IV Mandatory 40%
V Mandatory 50%
VI Mandatory >50%
The Lomita City Council will formally declare the stage of the water shortage, following a public hearing, upon determination from City water staff that a water shortage exists and the WSCP should be implemented. Following City Council declaration of a shortage stage, the WSCP will become effective no sooner than the first billing period on or after the date of publication of the Council Resolution. The WSCP will remain in effect until the City Council declares the water shortage emergency has ended. Alternatively, the City Council may also change the stage of the water shortage as appropriate; however, the City Council will not impose mandatory measures without first conducting a duly noticed public hearing pursuant to CWC §350 or §375.
6.0 Shortage Response Actions
The City’s Water Conservation and Drought Management Plan is codified as Section 12-4 of the Municipal Code. The WSCP establishes a phased response based on shortage severity. The City Council declares shortage stages by resolution following a public hearing.
Objectives of the response plan are to:
1. Prioritize essential uses of water.
2. Maximize local municipal water supplies.
3. Eliminate water waste city-wide.
4. Minimize adverse financial effects.
Water use priorities are based on California Water Code Sections 350–358:
• First Priority: Minimum health and safety residential indoor needs. • Second Priority: Commercial, industrial, and institutional uses. • Third Priority: Existing landscaping.
• Fourth Priority: New customers and proposed projects.
Shortage response actions by category along with estimated effectiveness are detailed in Appendix A and summarized in the following sections.
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Water Shortage Contingency Plan 12
6.1 City Response Actions & Operational Changes
In a water shortage, the City takes proactive steps to reduce demand and augment supplies by engaging the public, modifying operations, enforcing prohibitions, and plan for contingencies.
Table 4 summarizes the City’s response actions and operational changes by shortage stage.
Table 3: City Water Shortage Response Actions
Stage City Water Department Response Action
Stage 1
(<10%) • Begin an Enhanced Public Awareness Campaign
Stage 2
(10% to 20%)
• No Refilling of Municipal Ornamental Lakes or Ponds, Except as Necessary to Sustain Aquatic Life
• Reduced Flushing Frequency
• No New Potable Water Service
• No New Temporary Meters or Permanent Meters
• No Statements of Immediate Ability to Serve or Provide Potable Water Service (Will Serve Letters, Certificates, Or Letters of Availability)
• Suspend Consideration of Annexations to the City’s Water Service Area
• Establish a Water Allocation for Certain Properties Within the City's Jurisdiction
Stage 3
(20% to 30%)
• Increase Groundwater Pumping
• Issue Water Quality Notices (if Necessary) in Case Additional Pumping Creates Water Quality Issues
• Coordinate with Adjacent Agencies to Prepare for Possible Need of Emergency Water when/if Conditions Worsen
• Notify customers immediately of suspected leaks in their plumbing
• Repair or Isolate Water Main Leaks within 24 Hours
• Provide Letters to Certain Properties for Allocations Established in Stage 2 Informing Reduction of 10% in Allocation of Tiered Rate
• Elimination of Specific Municipal Uses such as Hydrant Flushing, Street Cleaning, and Water-Based Recreation
Stage 4
(30% to 40%)
• Rate Increase Study to Mitigate Loss of Revenue
• Further Increase in Rates for Certain Over-Allocation Properties Issued Warnings/Notices in Stage 3
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Water Shortage Contingency Plan 13
Stage City Water Department Response Action
• Increase Frequency of Meter Readings to Once Monthly in Order to Allow Staff and Customers to Track Progress
• Implement Water Waste Patrols (Once Monthly)
• Coordinate with Adjacent Agencies to Receive Emergency Water via Emergency Interconnections
• Deter Flushing of Mains Until Maximum Allowable Time for Quality/Safety
• Coordinate with Manufacturers and/or Governing Agencies to Receive Fleet of Potable Water Trucks
Stage 5
(40% to 50%)
• Systemwide Rate Increase to Achieve Necessary Reduction and to Mitigate Loss of Revenue
• Notices on Government Access Channel (TV)
• Hand-Post Drought Notices on all Customer Properties
(Residential Homes & Commercial Buildings)
Stage 6
(>50%)
• Mobilize Potable Water Trucks
• Decrease Pressure in Water Mains
6.2 Prohibitions on End Use
Per Section 12-4 of the City’s Municipal Code, prohibitions on water use include, but are not limited to, the following:
1. Allowing irrigation runoff
2. Landscape irrigation for more than 15 minutes (except drip irrigation)
3. Irrigation on rainy days or within specified hours of a rain event.
4. Failure to repair leaks in a timely manner
5. Washing of automobiles without a bucket or hand-held hose equipped with a positive shutoff nozzle
6. Restaurants serving water to their customers, except when specifically requested by their customers
7. Operating a decorative water fountain without re-circulated water
8. Operating a commercial car wash without re-circulated water
9. Operating a single-pass cooling system
10. Hotels, motels, and other commercial lodging establishments shall not launder towels and linens daily, except when specifically requested by their customer Table 4 provides a full list of prohibitions by shortage stage. All prohibitions with additional detail are included Appendix A.
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Water Shortage Contingency Plan 14
Table 4: City Code Prohibitions on Water Use During Water Shortages Stage Prohibition/Restriction Penalty
Stage 1
(<10%)
• No Irrigation between 10 am to 8 pm
• No Person Shall Operate a Decorative Water Feature
(Fountains, Ponds, etc.) that Does Not have a
Recirculating System
• All Landscape Irrigation Limited to No More than Three (3) Days per Week from June 1 to Oct 31 and No More
than Once per Week from Nov 1 to May 31
• All Landscape Irrigation Limited to No More than 15
minutes per Station per Watering Day
• Repair or Isolate Leaks within 72 Hours of Notification by the City
• No Washing Sidewalks and Driveways with Water
• Car Washing Only with Bucket or a Hose with Shutoff
Valve or Nozzle
• Excess Irrigation Runoff is Prohibited
• No Landscape Irrigation During or Within 48 hours of a Rain Event
• Restaurants to Serve Water Only Upon Request
• Restaurants to Wash Kitchen and Dining Room with
Bucket or Specialized Water Broom Only
• Hotels/Motels to Provide Customer Option of Daily
Laundry
• Automobile Wash Business Must Use Water Recycling
Systems
Yes
Stage 2
(10% to 20%)
• All Landscape Irrigation Limited to No More than Two
(2) Days per Week from June 1 to Oct 31 and No More
than Once per Week from Nov 1 to May 31
• All Landscape Irrigation Limited to No More than 10
minutes per Station per Watering Day
• Water landscaped areas, including trees and shrubs
located on residential and commercial properties, by
using a bucket, hand-held hose with a positive shutoff
nozzle, or low-volume, non-spray irrigation.
• No Refilling of Ornamental Lakes or Ponds, Except to
Sustain Aquatic Life
• Repair or Isolate Leaks within 48 Hours of Notification by the City
Yes
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Water Shortage Contingency Plan 15
Stage Prohibition/Restriction Penalty
• Pools or Spas to have a Cover to Prevent Evaporation
• Cease All Operation of Decorative Water Features
(Fountains, Ponds, etc.)
• Car Washing Limited to Only Automobile Washes that
Use Water Recycling Systems
• No Landscape Irrigation During or Within 72 hours of a Rain Event
• Commercial Nurseries shall Use Water Only During the
Hours from Midnight to 6 am
• Commercial Landowners to Allow Tenants the Option of
Replacing Lawns & Landscapes
Stage 3
(20% to 30%)
• All Landscape Irrigation Limited to No More than Once per Week from June 1 to Oct 31 and No Irrigation from
Nov 1 to May 31
• All Landscape Irrigation Limited to No More than 7
minutes per Station per Week
• Repair or Isolate Leaks within 24 Hours of notification by the City
• No Landscape Irrigation During or Within 1 Week of a
Rain Event
• No Refilling of Pools or Spas
• Restaurants to Wash Dining Room Once Daily (after
Close of Business) and Only with Bucket or Specialized
Water Broom
• Restaurants to Pre-Soak Dishes
Restaurants to Install Solenoid Valve for Sinks with
Garbage Disposals
• No Commercial Window-Washing
• Apartment Buildings to Certify Low-Flow Fixtures
(Showerheads and Faucets) are Installed prior to
Leasing Apartments
• Commercial Buildings and Restaurants to
Replace/Install Waterless Urinals
• Commercial Buildings and Restaurants to
Replace/Install Low-Flow Toilets
• Hotels/Motels to Wash Laundry Only After Change of
Customer
Yes
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Water Shortage Contingency Plan 16
Stage Prohibition/Restriction Penalty
Stage 4
(30% to 40%)
• Cease All Irrigation Except by Reclaimed Water or
Except for Crops or Horticulture (Nurseries) or for Fire or Erosion Maintenance
• Commercial Landscape to be Replaced with CAFriendly Landscape Yes
Stages 5
(40% to 50%)
• N/A (Same Requirements as Stages 1 to 4 Above)
• This Stage Involves Only Additional
Operational/Management Response Actions
Yes
Stages 6
(50% or more)
• N/A (Same Requirements as Stages 1 to 4 Above)
• This Stage Involves Only Additional
Operational/Management Response Actions
Yes
7.0 Disaster Management
7.1 Emergency Response Plan
The City’s Draft Local Hazard Mitigation Plan (LHMP), included in Appendix B, is currently being updated to address the planned response to extraordinary emergency situations associated with natural disasters, including seismic disasters. Other City planning tools, such as the City’s Emergency Operations Plan (EOP), included in Appendix C, provides for the most effective and economical allocation of resources for the maximum benefit and protection of life, property, and the environment during an emergency. The EOP supersedes the City’s prior Standardized Emergency Management System Multi-Hazard Functional Plan, which was adopted in January 2006. These two plans provide the City with a means to mitigate potential crisis, address the crisis, and maintain communication during the crisis. These documents address seismic risk and response in the City. In accordance with the intent of the City’s LHMP and EOP, this WSCP Section recommends that water staff shall maintain water operations as follows:
• All on-duty personnel are expected to remain on duty until relieved of duty • Off-duty personnel will be expected to return to work or be “on-call” • While in a disaster mode, working shifts will be 12 hours This WSCP Section also recommends that the City’s Water Operations Manager carry out operations as follows:
• Assess impact of incident
• Establish contacts with neighboring water agencies
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Water Shortage Contingency Plan 17
• Identify need for and prioritize locations for water distribution • Provide water quality assurance or prepare notices for water quality • Evaluate, plan, and implement action to acquire and distribute alternative water • Determine the need to staff a water task group and secure resources through the Logistics Section
• Provide informational status to nearby water agencies, including:
o WBMWD
o City of Torrance
o City of Los Angeles
o California Water Service
• Provide information to media as appropriate.
Perhaps the most critical task in the City’s response to a catastrophe is the distribution of water to customers. Portable pumps and water trucks can be used to distribute water to customers.
This WSCP provides a general guide of City response actions to catastrophes. Other planning documents, including the City’s LHMP, provide additional details which supplement this WSCP.
WBMWD and MWD are available to assist the City to facilitate the flow of information and provide emergency supplies. MWD has established an Emergency Operations Center (EOC) to assist its staff and its member agencies during a water supply emergency. In 2019, MWD started a new five‐year emergency exercise plan that will allow all of its member agencies to participate in at least one of MWD’s annual emergency exercises. MWD’s EOC also conducts monthly communication tests, which include MWD’s emergency two-way radio system, on-line WebEOC system, Met-Alert mass notification system, and satellite phones. These monthly tests reach out to the member agencies, Treatment Plant Control Centers, ICPs, MWD management, and DWR. These regular exercises help prepare MWD and its member agencies to respond to future emergencies.
In the event of an MWD supply shortage, the City will indirectly rely on MWD’s catastrophic event plan to utilize the Diamond Valley Lake reservoir, which can provide six months of emergency supply. If there were a catastrophic failure of the California Aqueduct or the Colorado River Aqueduct conveyance facilities, MWD could draw on emergency supplies in Diamond Valley Lake. The City will be informed indirectly during a catastrophic event that affects MWD’s water supplies. Locally, WBMWD, as the MWD member agency, will utilize the Met- Alert system to immediately contact its customer agencies about potential interruption of services.
Additional emergency services in the State of California include the Master Mutual Aid Agreement and the California Water Agency Response Network (CalWARN). The Master Mutual Aid Agreement includes all public agencies that have signed the agreement and is planned out of the California Office of Emergency Services. CalWARN includes all public agencies that have signed the agreement to WARN and provides mutual aid assistance. It is managed by a State Steering Committee and Regional Chairs.
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Water Shortage Contingency Plan 18
The City’s distribution system has three emergency connections. One connection is with the City of Los Angeles and the other two connections are with the City of Torrance. The City of Los Angeles connection is an 8-inch, two-way connection with a maximum capacity of 1,800 GPM.
The two connections with the City of Torrance are 8-inch, one-way connections with a maximum capacity of 1,350 GPM. These three connections can allow water to flow into the City’s water system during emergencies.
7.2 Seismic Risk
According to the maps provided on the California Office of Emergency Services’ online planning tool (My Plan) and the California Geological Survey’s online earthquake hazards zone application (EQ Zapp), three (3) known faults exist within close proximity to the City. The faults include the Palos Verdes Vault, the Newport-Inglewood Fault, and the Cabrillo Fault. The known fault lines are shown in Figure 2. The faults are located within ten miles of the City.
Figure 2: Fault Zones Near the City
Source: (California Geological Survey, 2024)
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Water Shortage Contingency Plan 19
An earthquake has the potential to damage drinking water and wastewater utilities. Impacts to the City’s water system may include, but not be limited to:
• Structural damage to facility infrastructure and equipment • Water tank damage or collapse
• Damage to water distribution system
Damage to distribution lines due to shifting ground and soil liquefaction, resulting in potential water loss, water service interruptions, low pressure, contamination and sinkholes and/or large pools of water throughout the service area.
Unlike a power outage or a man-made catastrophe, earthquakes can potentially restrict water supplies for a longer period. If an earthquake damages significant portions of the City’s pumping or distribution system, the City can provide temporary drinking water to customers through potable water trucks.
Even if an earthquake does not result in damage to water production or distribution facilities, an earthquake could result in a power outage or damage to the water system facilities. The City’s water operations staff will be on standby alert during an emergency to respond promptly to water supply interruptions. The City’s water operations staff will work with Southern California Edison to restore power to water supply facilities. In the interim and if water quality is safe for consumption, the City’s Well No. 5 can receive backup power. That is, the City can provide a diesel-powered generator to Well No. 5, so that the well can remain operational until power is restored.
8.0 Communication Protocols
A common understanding of the water supply situation is essential for the WSCP to be effective.
During a water shortage, the City will be able to allocate staffing and resources to inform its customers of the Council-declared water shortage. In particular, the City will inform its water service customers of the following:
• Water Shortage Stage
• Water Use Prohibitions
• City Water Staff Response Actions
The communication protocol will be in place prior to formal declaration of a water supply shortage. The frequency and extent of coordination will be based on the severity of the shortage to ensure effectiveness of a declared water shortage. The City will use the following resources to communicate with its customers:
• City Website
• Social Media (i.e., Twitter/Facebook)
• Bill Inserts/Postcard Notices
• Billboard or Digital Message Boards
• Advertisements (Radio & Print)
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Water Shortage Contingency Plan 20
The goal of the communication efforts will be to raise awareness of the drought and to motivate the City’s water service customers to conserve water. The City should also prepare customers for possible increases in water shortage severity. The key goal of communication is to promote available water resources for vulnerable populations, provide specialized outreach for impacted industries, including instructions on how to receive emergency bottled water, and how to participate in public hearing meetings with City staff.
9.0 Compliance and Enforcement
Per City Code Section 12-4:
“Any person who uses, causes to be used, or permits the use of water in violation of any section of this chapter is guilty of an offense punishable as follows:
1. The first violation of any section herein shall constitute an infraction whereby a written warning shall be issued to the party or parties witnessed committing the infraction; and
2. The second violation of any section herein shall constitute an infraction punishable in accordance with title I, chapter 2 (Penalty Provisions) of the Lomita Municipal Code.” The penalties listed above may be waived if a customer completes a “Hardship Variance” and provides supporting documentation for proof of hardship.
10.0 Legal Authority
Response to water shortages is codified into City Municipal Code (Section 12-4, Article 1 “Water Use”). When necessary, the City will declare a water shortage emergency in accordance with CWC Chapter 3. The City will coordinate internally as well as with Los Angeles County for the possible proclamation of a local emergency.
11.0 Financial Consequences of WSCP
Implementation
A full list of anticipated financial consequences for each shortage action is included in Appendix A. Consequences are identified as either reductions in revenue or increased expenses, and potential mitigation actions are suggested. This information is summarized in the following sections.
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Water Shortage Contingency Plan 21
11.1 Impacts to Revenue
During a water shortage, revenue generated through water sales will be impacted. Based on the City's total water revenue and operating expenses, demand reductions will likely result in negative net cash provided by operating activities.
Fiscal impacts can be mitigated by considering changes to the City’s water rate fee structure in future rate planning cycle. In addition, the following actions could take place under such circumstances:
• Implement a drought rate surcharge
• Delay capital improvement projects
• Consider temporary increase of water rates to meet operation and maintenance costs.
A combination of the measures outlined above may be used to offset or diminish the effects of lost revenues. Capital construction projects may be deferred as appropriate. The base water rate may be increased to cover the general operation, maintenance, system upgrades, and capital expenditures. An increase in the base rate would be temporarily employed and then returned to pre-shortage rates when conditions improve.
11.2 Impacts to Reserve Funds
The City carries reserves in the water system accounts to fund for needed improvements to its water system. The balance of reserves the City is maintained primarily for facility repair and replacement. Under a shortage crisis, some flexibility would exist to dip into these reserves to help offset loss of revenue.
12.0 Monitoring and Reporting
To properly assess the effectiveness of this WSCP, the City will need to monitor metered consumption and production. The City will also need to track its billing system to see if fines for violations of water-use prohibitions have been issued.
12.1 Monitoring
Using the City’s water billing records, the City will be able to identify not only the conserved volumes, but also the customers which are in violation of the provisions of this chapter. In particular, the City can review data from the following sources:
• Production Meters: Provides an account of daily water production • Customer Meters: Provides an account of monthly consumption With Automatic Meter Reading (AMR) technology, the City can monitor the meters for irrigation violations during a water waste patrol. The AMR meters allow the City to view consumption immediately from a patrolling vehicle.
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Water Shortage Contingency Plan 22
In addition to monitoring customer use, the City also can monitor production volumes to determine if the well supplies have been reduced. Under normal conditions, potable water production is recorded daily. Weekly and monthly reports are prepared and monitored. This data will be used as a baseline to measure the effectiveness of a water shortage stage that may be implemented.
During rationing conditions, the water budget will be monitored on a weekly, daily, or hourly basis depending on the severity of the drought. During a disaster shortage, production figures will be monitored on an ongoing basis. The City’s monitoring system will warn of any critical conditions instantly. In addition, meter readings will be performed more frequently than the normal bi-monthly schedule.
12.2 Enforcement
During shortage conditions, the City can implement water-waste patrols or increase the frequency of existing water waste patrols. If City staff are unable to conduct additional water waste patrols, the City can contract with outside support to conduct water waste patrols.
However, contracting with an outside firm would incur additional costs at a time when revenue is impacted. If violations are observed, fines/penalties per Section 8.7.5 can be applied.
12.3 Reporting
During a declared water shortage, City water staff will report water production and consumption figures to City Council monthly. Additionally, during the declared shortage of the WSCP, City staff will report water production and consumption figures to the State Water Resources Control Board on a monthly basis.
13.0 WSCP Refinement Procedures
The City intends to update and refine this WSCP as necessary. The WSCP can be updated in one of the following ways:
• Cyclical Updates
• Data-Driven Updates
• Externally-Driven Updates
The following is a guideline for how the City will update this WSCP:
13.1 Cyclical Updates
The cyclical updates will be handled by City staff internally with the assistance of an outside engineering consultant. Once the WSCP is implemented, the City will document the effectiveness of the customer water use prohibitions listed in Table 4 and the City water staff response actions listed in Table 3. The effectiveness will be evaluated using the methodologies under Section 12.0. The WSCP effectiveness will be documented over the course of five (5) Tuesday, June 16, 2026 Reg CC MTG, Page *445
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Water Shortage Contingency Plan 23
years, until the next UWMP update. It is the City’s intent to update the WSCP every 5 years, alongside the City’s UWMP. The City will conduct an internal review of the WSCP prior to releasing a Request for Proposals for the UWMP and WSCP. The Request for Proposals process will provide the City with an opportunity to revise the WSCP as needed.
13.2 Data Driven Updates
Data-driven updates to the WSCP will likely occur mid-cycle or at some point between the 5- year cycle. The data-driven updates can be prepared entirely by City staff (internally) due to the urgency of such updates. For example, if the City finds that the fines/penalties are not effective at reducing overall demand, the City may increase the fines through an amendment to Section 12-4 of the City Municipal Code and revise the WSCP (Code Section 12-4) to reflect the new fines. Other items of this WSCP can be updated in a similar manner.
13.3 Externally Driven Updates
Conversely, if the fines are found by the City’s customers to be too punitive, and Council is petitioned to reduce the fines, the City can adjust Section 12-4 of the City Municipal Code and revise the WSCP herein to reflect the new fines. Other items of this WSCP can be updated in a similar manner.
13.4 WSCP Re-Adoption
Once the WSCP is revised, the City Council will be required to re-adopt the revised WSCP. This will require a public hearing to receive public comments on the WSCP. The revised WSCP will replace the former WSCP and will then remain effective until the City elects to update the WSCP.
14.0 Plan Adoption, Submittal, and
Availability
The City adopted this WSCP with the 2025 UWMP. The 2025 UWMP and WSCP were made available for public review in May 2026 and a public hearing was held on June 16, 2026 to receive public input on the draft 2025 UWMP and the WSCP.
The Lomita City Council adopted the 2025 UWMP and the WSCP at a public meeting on June 16, 2026. The resolution of adoption is included as an attachment.
This WSCP was submitted to DWR through the WUEData portal before the deadline of July 1, 2026. This WSCP will be available to the public on the City’s website.
If the City identifies the need to amend this WSCP, it will follow the same procedures for notification to cities, counties, and the public as used for the 2025 UWMP and for initial adoption of the WSCP.
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Water Shortage Contingency Plan 24
References
California Geological Survey. (2024). Fault Activity Map of California. Retrieved from https://maps.conservation.ca.gov/cgs/fam/App/
MWD. (2026). Draft 2025 Urban Water Management Plan. Metropolitan Water District of Southern California.
West & Associates. (2022). 2020 Urban Water Management Plan. City of Lomita, CA.
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Water Shortage Contingency Plan 25
Appendix A: Water Shortage
Contingency Plan Overview
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Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions --- --- --- ---
< 5% --- --- ---
10% - 20% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage < 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- --- 10% - 20% X --- Drought Rate Surchage
< 5% --- --- ---
5% - 10% X --- ---5% - 10% X --- ---
10% - 20% X --- Drought Rate Surchage
5% - 10% --- X Use Financial Reserve Funds
Repair Leaks within 72 Hours of Notification by the City Automobile Wash Business Must Use Water Recycling SystemsHotels/Motels to Provide Customer Option of Daily Laundry Excess Irrigation Runoff is ProhibitedAll Landscape Irrigation Limitted to No More than 15 minutes per Station per Watering Day Water Waste
Begin an Enhanced Public Awareness CampaignNo Landscape Irrigation During or Within 48 hours of a Rain EventRestaurants to Wash Kitchen and Dining Room with Bucket or Specialized Water Broom Only Operational
No Irrigation between 10 am to 8 pmNo Person Shall Operate a Decrorative Water Feature (Fountains, Ponds, etc.) that Does Not have a Recirculating SystemAll Landscape Irrigation Limitted to No More than Three (3) Days per Week from June 1 to Oct 31 and No More than Once per Weekfrom Nov 1 to May 31 PERMANENT & STAGE 1 SHORTAGE
WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
Description
(1 / 6) ≤10%
No Washing Sidewalks and Driveways with WaterCar Washing Only with Bucket or a Hose with Shutoff Valve or Nozzle Commercial
Restaurants to Serve Water Only Upon Request
Shortage
Alert
General
External (Council or Public Initiated Revisions)
Local State
Penalties in accordance with Title 1, Chapter 2 of Municipal Code Medical or Financial Hardships. Application to be Filled Out and Submitted to City Staff.
Communication Procedures
Print Telecommunication Online
Bill Inserts. Local Newspaper. Bus Ads. Phone Calls. Text Messages. Email. City's Website. Facebook. Twitter. Web Ads.
Monitoring & Reporting
Data Collection Data Analysis
Cyclical
Compliance
Customer Meter Readings. Imported Connection Meter Readings. Well Production Meter Readings Water Shortage Contingency Plan
Federal
Legal Authority
City Municipal Code Chapter 4. Ordinance No. 722 CA Water Code 10632 Federal Disaster Mitigation Act of 2000 Enforcement
Patrol/Monitoring Fines/Penalties Variances/Exceptions
On-Foot Meter Readers. Vehicular Meter Readings. SCADA Meter Readings Revise WSCP Every 5 Years w/ UWMP --> Review & Comments --> Finalize --> Council Hearing & Adoption Revise WSCP --> Review & Comments --> Finalize --> Council Hearing & Adoption External Comments --> Revise Draft --> Review & Comments --> Finalize --> Council Hearing & Adoption Tabular Data. Bar Charts. Line Charts.
City Staff to Submit Data to Operations Manager & Public Works Director on Bi-Weeky Basis (2x per Month) City Finance/Billing Staff to Use Communication Procedures to Convey Compliance to Customers.
Results to Show Effectiveness and Trigger Refinements in WSCP per Refinement Procedurs Below Data-Driven Revisions (from Monitoring Above) or City Staff Initiated Revisions Refinement Procedures
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Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 10% - 20% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage < 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- --- 10% - 20% X --- Drought Rate Surchage
5% - 10% --- --- ---
10% - 20% X --- Drought Rate Surchage
< 5% --- --- ---< 5% --- --- ---
--- --- --- ------ --- X Use Financial Reserve Funds
No Refilling of Municipal Ornamental Lakes or Ponds, Except as Necessary to Sustain Aquatic LifeAll Landscape Irrigation Limitted to No More than Two (2) Days per Week from June 1 to Oct 31 and No More than Once per Week from Nov 1 to May 31Repair Leaks within 48 Hours of Notification by the City Water Waste
No Refilling of Ornamental Lakes or Ponds, Except as Necessary to Sustain Aquatic LifeAll Landscape Irrigation Limitted to No More than 10 minutes per Station per Watering DayNo Landscape Irrigation During or Within 72 hours of a Rain Event STAGE 2 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED HEREIN) WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
Description
Repair Water Main Leaks within 24 HoursPools and Spas to have a Cover to Prevent EvaporationCease All Operation of a Decrorative Water Features (Fountains, Ponds, etc.)Commercial Landowners to Allow Tenants the Option of Replacing Lawns & Landscapes with CA-Friendly Landscape General
Operational
Commercial
10 ‐ 20% Shortage Condition
Establish a Water Allocation for Certain Properties Within the City's Jurisdiction 2 / 6
Suspend Consideration of Annexations to the City’s Water Service AreaCar Washing Limited to Only Automobile Wash Businesses that Use Water Recycling SystemsCommercial Nurseries shall Use Water Only During the Hours from Midnight to 6:00 amWater landscaped areas, including trees and shrubs located on residential and commercial properties, by using a bucket, hand-held hose with a positive shutoff nozzle, or low-volume, nonspray irrigation.
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Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 20% - 30% X --- Drought Rate Surchage20% - 30% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage < 5% --- --- ---
20% - 30% X --- Drought Rate Surchage
< 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- --- 10% - 20% X --- Drought Rate Surchage
10% - 20% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage10% - 20% --- --- --- --- --- X Use Financial Reserve Funds
--- --- X Use Financial Reserve Funds
5% - 10% --- X Use Financial Reserve Funds
< 5% --- --- ---
No Commercial Window-WashingHotels/Motels to Wash Laundry Only After Change of CustomerRepair Leaks within 24 Hours of notification by the City Restaurants to Install Solenoid Valve for Sinks with Garbage Disposals Water Waste
Restaurants to Wash Dining Room Once Daily (after Close of Business) and Only with Bucket or Specialied Water Broom Commercial
Commercial Buildings and Restaurants to Replace/Install Waterless UrinalsCommercial Buildings and Restaurants to Replace/Install Low-Flow ToiletsIssue Water Quality Notices (if Necessary) in Case Additional Pumping Creates Water Quality IssuesIncrease Groundwater Pumping (3 / 6)
Description
All Landscape Irrigation Limitted to No More than 7 minutes per Station per Week STAGE 3 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED ABOVE OR HEREIN) WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
20 ‐ 30%
No Refilling of Pools and SpasNo Landscape Irrigation During or Within 1 Week of a Rain EventCoordinate with Adjacent Agencies to Prepare for Possible Need of Emergency Water when/if Conditions WorsenElimination of Specific Municipal Uses such as Hydrant Flushing, Street Cleaning, and Water-Based Recreation Operational
Severe
Shortage
Condition
General
Restaurants to Pre-Soak DishesProvide Letters to Certain Properties for Allocations Established in Stage 2 Informing Reduction of 10% in Allocation of Tiered Rate(or other percentage to be specified)All Landscape Irrigation Limitted to No More than Once per Week from June 1 to Oct 31 and No Irrigation from Nov 1 to May 31Apartment Buildings to Certify Low-Flow Fixtures (Showerheads and Faucets) are Installed prior to Leasing Apartments Tuesday, June 16, 2026 Reg CC MTG, Page *451
Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 30% - 40% X --- Drought Rate Surchage20% - 30% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage --- --- --- ------ --- --- ------ --- --- ------ --- X Use Financial Reserve Funds Defer Capital Improvements 5% - 10% --- X Use Financial Reserve Funds Defer Capital Improvements --- --- X Use Financial Reserve Funds Defer Capital Improvements--- --- X Use Financial Reserve Funds Defer Capital Improvements--- --- X Use Financial Reserve Funds Defer Capital Improvements < 5% --- --- ---
--- --- X Use Financial Reserve Funds Defer Capital Improvements Description
No New Potable Water ServiceNo New Temporary Meters or Permanent MetersNo Statements of Immediate Ability to Serve or Provide Potable Water Service (Will Serve Letters, Certificates, Or Letters of Availability) Operational
Rate Increase Study to Mitigate Loss of RevenueCoordinate with Adjacent Agencies to Receive Emergency Water via Emergency Interconnections Commercial
Response Action Financial Consequences WSCP
Level Severity
STAGE 4 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED ABOVE OR HEREIN) Critical
Shortage
Condition
Shortage
Level
4 / 6 30 ‐ 40%
General
Cease All Irrigation Except for Crops or Horticulture (Nurseries) or for Fire or Erosion Maintenance Water Waste
N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 3)Coordinate with Manufacturers and/or Governing Agencies to Receive Fleet of Potable Water TrucksDeter Flushing of Mains Until Maximum Allowable Time for Quality/SafetyCommercial Landscape to be Replaced with CA-Friendly LandscapeImplement Water Waste Patrols (Once Monthly)Further Increase in Rates for Certain Over-Allocation Properties Issued Warnings/Notices in Stage 3Increase Frequency of Meter Readings to Once Monthly in Order to Allow Staff and Customers to Track Progress Tuesday, June 16, 2026 Reg CC MTG, Page *452
Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 40% - 50% X --- (New) Rate Increase40% - 50% X --- (New) Rate Increase40% - 50% X --- (New) Rate Increase40% - 50% --- X Use Financial Reserve Funds Defer Capital Improvements40% - 50% --- X Use Financial Reserve Funds Defer Capital Improvements Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 40% - 50% X --- (New) Rate Increase40% - 50% X --- (New) Rate Increase40% - 50% X --- (New) Rate Increase10% - 20% --- X Use Financial Reserve Funds Defer Capital Improvements10% - 20% --- X Use Financial Reserve Funds Defer Capital Improvements N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 4) STAGE 6 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED ABOVE OR HEREIN) STAGE 5 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED ABOVE OR HEREIN) Operational
Commercial
Operational
N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 5) WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
Description
6 / 6 >50%
Crisis
Shortage
Condition
Mobilize Potable Water TrucksDecrease Pressure in Water MainsN/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 5)N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 5) General
Water Waste
Hand-Post Drought Notices on all Customer Properties (Residential Homes & Commercial Buildings) 5 / 6 40 ‐ 50%
Emergency
Shortage
Condition
Water Waste
WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
Description
Commercial
N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 4)Systemwide Rate Increase to Achieve Necessary Reduction and to Mitigate Loss of Revenue General
N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 4) Tuesday, June 16, 2026 Reg CC MTG, Page *453
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Water Shortage Contingency Plan 26
Appendix B: Draft Local Hazard
Mitigation Plan
The City of Lomita’s Local Hazard Mitigation Plan can be accessed online at:
https://lomitacity.com/local-hazard-mitigation-plan/
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Appendix C: Emergency Operations Plan
The City of Lomita’s Emergency Operations Plan can be access online at:
https://lomitacity.com/wp-content/uploads/2021/12/EOP-Basic-Plan-11-27-17.pdf Tuesday, June 16, 2026 Reg CC MTG, Page *455
RESOLUTION NO. 2026-36
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LOMITA, CALIFORNIA, ADOPTING THE 2025 URBAN WATER MANAGEMENT
PLAN AND FINDING THE ACTION TO BE EXEMPT FROM THE
CALIFORNIA ENVIRONMENTAL QUALITY ACT
THE CITY COUNCIL OF THE CITY OF LOMITA, CALIFORNIA, DOES HEREBY FIND, ORDER AND RESOLVE AS FOLLOWS:
SECTION 1. Recitals.
A. The California Legislature enacted Assembly Bill 797 (Water Code Sections 10610 et seq., known as the Urban Water Management Planning Act (the "Act") during the 1983-84 Regular Session.
B. The Act requires every supplier providing water for municipal purposes to more than 3,000 customers or supplying more than 3,000 acre-feet of water annually to prepare an Urban Water Management Plan (Plan), the primary objective of which is for the conservation of water.
C. The City of Lomita is an urban supplier of water to a population of over 20,000.
D. The Act requires Plans to be reviewed at least once every five years, and requires cities to make any amendments or changes to the Plan which are indicated by the review.
E. The City adopted its last Urban Water Management Plan on May 18, 2021.
F. A new Urban Water Management Plan must be adopted by the Council, after public review and hearing, and filed with the State of California Department of Water Resources by July 1, 2026.
G. The City of Lomita has prepared and circulated for public review a draft 2025 Urban Water Management Plan, and a properly noticed public hearing regarding the Plan was held by the City Council on June 16, 2026.
SECTION 2. The City Council finds that the City is in conformance with all applicable requirements of the Urban Water Management Planning Act.
SECTION 3. The City Council hereby adopts the City's 2025 Urban Water Management Plan attached as Exhibit A, and orders it to be kept on file in the Tuesday, June 16, 2026 Reg CC MTG, Page *456
Resolution No. 2026-36
office of the City Clerk.
SECTION 4. The Public Works Director is hereby authorized and directed to file the 2025 Urban Water Management Plan with the State of California Department of Water Resources by July 1, 2026.
SECTION 5. The Council find and determines that, pursuant to California Water Code section 10652, the adoption of the 2025 Urban Water Management Plan and this Resolution does not constitute a project under the California Environmental Quality Act, and no environmental assessment is required.
SECTION 6. The City Clerk shall attest and certify to the passage and adoption of this Resolution and thereupon the same shall take effect and be in force and effect in accordance with its items.
PASSED, APPROVED AND ADOPTED, this 16th day of June 2026. ________________________________
Cindy Segawa, Mayor
APPROVED AS TO FORM: ATTEST:
Trevor Rusin, City Attorney Kathleen Horn Gregory, City Clerk Tuesday, June 16, 2026 Reg CC MTG, Page *457
2025 Urban Water
Management Plan
Draft
MAY 2026 CITY OF LOMITA
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CITY OF LOMITA
2025 Urban Water
Management Plan
MAY 2026
DRAFT
Prepared by Water Systems Consulting, Inc
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2025 Urban Water Management Plan
Draft
ACKNOWLEDGEMENTS
Water Systems Consulting, Inc. would like to acknowledge the significant contributions of the City of Lomita. The primary contributors are listed below.
Rachel Bucklew, Water Quality & Environmental Specialist Lina Hernandez, Assistant City Manager
The 2025 Urban Water Management Plan was prepared by Water Systems Consulting, Inc. The primary authors are listed below.
Michael Steele, PE
Corinne Watson, EIT
Cason Roberts, EIT
Grace Grgich, EIT
Rob Morrow, PE
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TABLE OF CONTENTS
1 Introduction and Lay Description...................................................................................... 1-1
1.1 Introduction............................................................................................................... 1-2
1.2 California Water Code............................................................................................... 1-2
1.3 UWMP Organization and Lay Description ................................................................. 1-3
1.4 UWMPs in Relation to Other Efforts.......................................................................... 1-5
1.5 Consistency with the Delta Plan for Participants in Covered Actions......................... 1-6 2 Plan Preparation .............................................................................................................. 2-1
2.1 Basis for Preparing a Plan ........................................................................................ 2-2
2.2 Regional Planning..................................................................................................... 2-2
2.3 Coordination and Outreach....................................................................................... 2-2 3 System Description .......................................................................................................... 3-1
3.1 General Description .................................................................................................. 3-2
3.2 Service Area Boundary Map ..................................................................................... 3-2
3.3 Service Area Climate ................................................................................................ 3-4
3.4 Service Area Population ........................................................................................... 3-5
3.5 Land Uses within Service Area ................................................................................. 3-6 4 Water Use Characterization ............................................................................................. 4-1
4.1 Historic Water Use.................................................................................................... 4-2
4.2 Projected Water Use................................................................................................. 4-3
4.3 Water Use for Lower-Income Households................................................................. 4-8
4.4 Climate Change Considerations................................................................................ 4-8 5 SB X7-7 Baselines, Targets, and 2025 Compliance......................................................... 5-1 6 Water Supply Characterization......................................................................................... 6-1
6.1 Water Supply Overview ............................................................................................ 6-2
6.2 Water Supply Characterization ................................................................................. 6-3
6.3 Energy Intensity ...................................................................................................... 6-19 7 Water Service Reliability and Drought Risk Assessment.................................................. 7-1
7.1 Introduction............................................................................................................... 7-2
7.2 Water Service Reliability Assessment....................................................................... 7-2
7.3 Drought Risk Assessment......................................................................................... 7-6 8 Water Shortage Contingency Plan ................................................................................... 8-1 Tuesday, June 16, 2026 Reg CC MTG, Page *461
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8.1 Introduction............................................................................................................... 8-2
8.2 Overview of WSCP Components .............................................................................. 8-2 9 Demand Management Measures ..................................................................................... 9-1
9.1 Introduction............................................................................................................... 9-2
9.2 Existing Demand Management Measures................................................................. 9-2
9.3 Additional Conservation ............................................................................................ 9-7
9.4 Reporting Implementation......................................................................................... 9-8 10 Plan Adoption, Submittal, and Implementation ........................................................... 10-1
10.1 Completed Steps for UWMP and WSCP ............................................................. 10-2 References ........................................................................................................................ REF-1 Appendix A UWMP Checklist ............................................................................................... A Appendix B DWR Standardized Tables ................................................................................ B Appendix C Water Shortage Contingency Plan ....................................................................C Appendix D Delta Reliance...................................................................................................D Appendix E Notifications....................................................................................................... E Appendix F Adopted Resolutions ......................................................................................... F Tuesday, June 16, 2026 Reg CC MTG, Page *462
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LIST OF FIGURES
Figure 3-1: Lomita Water Service Area ................................................................................... 3-3 Figure 3-2: Annual Precipitation from 2001-2025 .................................................................... 3-4 Figure 3-3: Land Use within Service Area ............................................................................... 3-7 Figure 4-1: Total Water Use, 2000-2025 ................................................................................. 4-2 Figure 4-2: Historic and Projected Water Demand, 2016-2050 ............................................... 4-6 Figure 6-1: Lomita Water Supplies, 2021-2025 ....................................................................... 6-2 Figure 6-2: Colorado River Aqueduct ...................................................................................... 6-4 Figure 6-3: State Water Project............................................................................................... 6-5 Figure 6-4: WBMWD Customer Agencies ............................................................................... 6-6 Figure 6-5: WBMWD Municipal Water District Service Area.................................................... 6-7 Figure 6-6: West Coast Groundwater Basin Map .................................................................. 6-13 Figure 6-7: Historic and Projected Water Supply................................................................... 6-18 Figure 7-1: Normal Year Supply and Demand Assessment (AFY) .......................................... 7-4 Figure 7-2: Drought Risk Assessment..................................................................................... 7-7 Tuesday, June 16, 2026 Reg CC MTG, Page *463
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LIST OF TABLES
Table 2-1: Coordination and Public Involvement ..................................................................... 2-3 Table 3-1: Average Monthly Climate Data............................................................................... 3-5 Table 3-2: Current and Projected Population .......................................................................... 3-5 Table 4-1: Summary of Past Water Use (AFY)........................................................................ 4-3 Table 4-2: 2020-2024 Audited Distribution System Water Losses........................................... 4-3 Table 4-3: Summary of Projected Water Use (AFY)................................................................ 4-5 Table 4-4: Characteristic Five-Year Water Use (AFY)............................................................. 4-6 Table 4-5: Water Efficiency Standard by Reporting Period...................................................... 4-7 Table 4-6: Lower-Income Demand Projection ......................................................................... 4-8 Table 5-1: SB X7-7 2020 Target Progress .............................................................................. 5-2 Table 6-1: Actual and Projected Water Supply (AFY)............................................................ 6-18 Table 6-2: Energy Reporting - Total Utility Approach ............................................................ 6-19 Table 7-1: Normal Year Supply and Demand Assessment (AFY)............................................ 7-4 Table 7-2: Single Dry Year Supply and Demand Assessment (AFY)....................................... 7-5 Table 7-3: Multiple Dry Year Supply and Demand Comparison (AFY) .................................... 7-5 Table 9-1: Lomita’s Current Water Rates ................................................................................ 9-4 Tuesday, June 16, 2026 Reg CC MTG, Page *464
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ACRONYMS & ABBREVIATIONS
F Degrees Fahrenheit
AF Acre Foot
AFY Acre Feet per Year
AMR Automatic Meter Reading
AWWA American Water Works Association
CII Commercial, Industrial, and Institutional
CIMIS California Irrigation Management Information System CWOL Making Conservation a California Way of Life
CWPF Cypress Water Production Facility
CWC California Water Code
DMM Demand Management Measure
DRA Drought Risk Assessment
DWR California Department of Water Resources
GPCD Gallons per Capita per Day
IRP Integrated Resources Plan
Lomita City of Lomita
MWD Metropolitan Water District of Southern California
RHNA Regional Housing Needs Assessment
SCAG Southern California Association of Governments
SBX7-7 Senate Bill x7-7
SWP State Water Project
SWRCB State Water Resources Control Board
USBR US Department of the Interior, Bureau of Reclamation UWUO Urban Water Use Objective
UWMP Urban Water Management Plan
WBMWD West Basin Municipal Water District
WRD Water Replenishment District
WRP Water Reclamation Plant
WSCP Water Shortage Contingency Plan
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1 Introduction and Lay Description
This section provides a brief overview of the City of Lomita and the purpose of this 2025 Urban Water Management Plan. It also describes how the Urban Water Management Plan is
organized and its relationship to local and regional planning efforts in which the City of Lomita is involved.
IN THIS S ECTION
• Introduction
• California Water Code
• UWMP Organization and Lay
Description
• UWMPs in Relation to Other
Efforts
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1.1 Introduction
This document presents the 2025 Urban Water Management Plan (UWMP) for the City of Lomita (Lomita) water service area. This section describes the general purpose of the UWMP and discusses UWMP adoption and implementation.
Lomita is in the southern portion of Los Angeles County, approximately 26 miles south of downtown Los Angeles. Lomita’s total land area is 1,261 acres or 1.97 square miles. Lomita supplies water to approximately 19,643 residents, or 96% of the total estimated city population.
The remainder of the population receives water from California Water Service.
Water production infrastructure includes one groundwater well and the Cypress Water Production Facility. The remaining water supply is imported water purchased from West Basin Municipal Water District (WBMWD) and produced by Metropolitan Water District of Southern California (MWD).
1.2 California Water Code
In 1983, the State of California Legislature enacted the Urban Water Management Planning Act (UWMP Act). The law required an urban water supplier providing water for municipal purposes to more than 3,000 customers or serving more than 3,000 acre-feet per year (AFY) to adopt a UWMP every five years. This UWMP must demonstrate water supply reliability under both normal and drought conditions. The UWMP Act applies to wholesale and retail water suppliers.
Wholesale water suppliers sell or transfer water to another entity for use, while retail water suppliers deliver water directly to end users. Lomita is a retail water supplier and WBMWD is the city’s wholesale water supplier.
Since the original UWMP Act was passed, it has undergone significant expansion. Prolonged droughts, groundwater overdraft, regulatory revisions, and changing climatic conditions affect the reliability of each water supplier as well as statewide water reliability overseen by California Department of Water Resources (DWR), the State Water Resources Control Board (SWRCB), and the California Legislature. Accordingly, the UWMP Act has grown to address changing conditions. The current requirements are found in Sections 10610-10656 and 10608 of the California Water Code (CWC).
DWR provides guidance for urban water suppliers by preparing a UWMP Guidebook, conducting workshops, developing tools, and providing program staff to help water suppliers prepare comprehensive and useful water management plans, implement water conservation programs, and understand the requirements of CWC. Suppliers prepare their own UWMPs and submit them to DWR. DWR then reviews the plans to make sure they have addressed the requirements; they submit a report to the California Legislature summarizing the status of the plans for each five-year cycle. The DWR 2025 UWMP Guidebook, released in February 2026, was used to develop this 2025 UWMP.
The purpose of this UWMP is for Lomita to evaluate long-term resource planning and establish management measures to ensure adequate water supplies are available to meet existing and Tuesday, June 16, 2026 Reg CC MTG, Page *467
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future demands. The UWMP provides a framework to help water suppliers maintain efficient use of urban water supplies, promote conservation programs and policies, ensure that sufficient water supplies are available for future beneficial use, and provide a response mechanism during drought conditions or other water supply shortages.
The UWMP is a valuable planning tool used for multiple purposes, including:
• Providing a standardized methodology for water utilities to assess their water resource needs and availability.
• Serving as a resource to the community and other interested parties regarding water supply and demand, conservation, and other water-related information. • Providing a key source of information for cities and counties when considering approval of proposed new developments and preparing long-range regional planning documents, such as city and county General Plans.
• Informing other regional and statewide water planning efforts, such as Integrated Regional Water Management Plans and the California Water Plan.
CWC 10632 also includes requirements for suppliers to prepare a Water Shortage Contingency Plan (WSCP). The WSCP documents a supplier’s plans to manage and mitigate an actual water shortage condition, should one occur because of drought or other impacts on water supplies.
The WSCP is a standalone document that can be updated independently of the UWMP but is referenced and attached to the 2025 UWMP. The WSCP is provided in Appendix C.
1.3 UWMP Organization and Lay Description
The following provides an overview and key findings of each section of the 2025 UWMP:
Section 1 – Introduction and Lay Description
This section provides background information on the UWMP process and regulatory requirements and provides an overview of the information covered throughout the remaining sections. Water suppliers that serve more than 3,000 customers or 3,000 AFY are required to prepare a UWMP. The UWMP is an important tool that details the city’s system and service area, estimates supply and demand over a 25-year period, and analyzes reliability under different potential conditions.
Section 2 – Plan Preparation
This section provides information on why a UWMP is required, the processes used to develop the UWMP, and an overview of the coordination and outreach efforts the city undertook to solicit diverse feedback and meet applicable requirements.
Section 3 – System Description
The section describes the city’s water system and service area, which covers about 2 square miles and serves approximately 20,000 people. It summarizes key infrastructure (43 miles of pipelines ranging in size from 2 inches to 16 inches in diameter, one potable water well, and two storage reservoirs) and explains that the city supplements local supplies by purchasing imported Tuesday, June 16, 2026 Reg CC MTG, Page *468
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water through WBMWD. This section also characterizes local climate and population projections that reflect planned development and Regional Housing Needs Allocation (RHNA) housing targets. Finally, it outlines land use within the service area, which is largely residential.
Section 4 – System Water Use
This section characterizes the city’s current and projected water demand by summarizing recent potable water use. This section describes a methodology and forecasts demand through 2050 based on baseline use by customer type, anticipated conservation savings, and planned development. 2025 total demand was 1,911 AF and demand is projected to rise to 1,963 AF by 2030, then increase further to roughly 2,052 AF by 2040, before leveling slightly to about 2,140 AF by 2050. Near-term growth is driven primarily by expected population growth, but the projections also incorporate assumed conservation, employment growth, and account for system water losses. The section also provides a focused five‑year outlook (2026–2030), anticipating a potential increase of 52 AFY from 2025 levels, and includes a summary of lowerincome household demand.
Section 5 – Baseline and Targets
This section describes compliance with the Water Conservation Act of 2009, also known as Senate Bill 7 of Special Extended Session 7 (SBX7-7). SBX7-7 required all water suppliers to increase water use efficiency and decrease per-capita water consumption by 20% by the year 2020. To meet this requirement, the city established a water use baseline and efficiency targets in its 2015 UWMP. This section discusses compliance and confirms that the city met their 2020 water use target of 118 gallons per capita per day.
Section 6 – System Supplies
This section summarizes the city’s historic and projected water supplies and provides a detailed overview of the city’s water supplies and their associated reliability and potential future constraints. The city’s water supplies include groundwater pumped that the city pumps from the West Coast Groundwater Basin along with imported water purchased from WBMWD. Over the past 5 years (2021–2025), the city relied almost exclusively on imported supplies as groundwater production ceased due to water quality issues. The city has invested in the planning and construction of a groundwater treatment project which is anticipated to be completed in 2026. In 2025, the city used 1,929 AF of imported water to meet demands. 14 AF of groundwater was pumped to support the rehabilitation of the city’s groundwater well and the associated treatment project. Looking to the future, the city projects a significant rebound in local groundwater production as the rehabilitated well is brought online and the city targets increasing groundwater pumping to their total adjudicated pumping right of 1,352 AFY.
Increased groundwater pumping would reduce reliance on imported supplies, demand for which is projected to reduce to around 611 AF in 2030 and then gradually rise and eventually stabilize around 788 AF by 2050.
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Section 7 – Water Supply Reliability
The section summarizes required reliability analyses that evaluate whether projected supplies can meet projected demands under varying conditions. Based on the city’s and its wholesaler’s planning assumptions, the results of the analysis indicate that future supply is adequate to meet future demand and no water shortages are anticipated across the planning horizon. These findings rely heavily on MWD’s 2025 UWMP in which they anticipated being able to meet all imported water demands from their customers, which include WBMWD. The drought risk assessment also concludes that the city is anticipated to be able to meet demand without shortages during an immediate five‑year drought, if one to occur over the next five years.
Section 8 – Water Shortage Contingency Plan
This section includes an overview of the standalone WSCP. The WSCP provides guidance on declaring a water shortage and how to mitigate water shortages. The WSCP defines levels of water shortage and outlines the actions that will be required of customers during each stage.
The complete WSCP is included as Appendix C.
Section 9 – Demand Management Measures
This section summarizes the city’s demand management measures, both local programs and those implemented regionally through WBMWD, to reduce water use and improve long‑term supply reliability. It explains that the city enforces permanent water‑waste prohibitions (via Ordinance No. 481) to discourage inefficient use. The city is an active supporter and participant in WBMWD’s conservation and education programs (e.g., rebates, turf replacement support, rain barrels, workshops, and public information campaigns), and that participation is reflected in WBMWD’s UWMP reporting. These measures are foundational to meeting past and future State conservation requirements (including the Urban Water Use Objective) and strengthening drought resiliency.
Section 10 – Plan Adoption
Section 10 briefly outlines the steps taken to adopt and submit the UWMP and make it publicly available. This section also discusses the agency’s plan to implement the UWMP.
1.4 UWMPs in Relation to Other Efforts
This UWMP characterizes water use, estimates future demands and supply sources, and evaluates supply reliability for normal, single-dry, and five consecutive dry years. The UWMP also requires a standalone WSCP, which is provided in Appendix C.
In addition to the 2025 UWMP, Lomita is involved in several internal and external planning efforts. Lomita collaborates with a variety of stakeholders to achieve consistency between various planning documents locally and regionally.
Documents that were used in preparation of this UWMP are:
• Urban Water Management Planning Guidebook (DWR, 2026) • WBMWD 2025 UWMP (Water Systems Consulting, Inc, 2026) Tuesday, June 16, 2026 Reg CC MTG, Page *470
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• Lomita 2020 UWMP (West & Associates Engineering, Inc, 2022) • Lomita Water Master Plan (Dudek, 2022)
1.5 Consistency with the Delta Plan for Participants in Covered Actions
Under the Sacramento-San Joaquin Delta Reform Act of 2009, state and local public agencies proposing a covered action in the Sacramento-San Joaquin Delta (the Delta), prior to initiating the implementation of that action, must prepare a written certification of consistency. This certification, which includes detailed findings as to whether the covered action is consistent with applicable Delta Plan policies, must be submitted to the Delta Stewardship Council.
An urban water supplier that anticipates participating in or receiving water from a proposed covered action, such as a multiyear water transfer, conveyance facility, or new diversion that involves transferring water through, exporting water from, or using water in the Delta, should demonstrate consistency with the Delta Plan Policy WR P1, Reduce Reliance on the Delta Through Improved Regional Water Self-Reliance (WR P1).
SB X7-1, which was signed in 2009, reformed Delta policy and governance. The legislation requires the development, adoption, and implementation of a “Delta Plan.” It also establishes a statewide policy to reduce reliance on the Delta in meeting California’s future water supply needs through a statewide strategy of investing in improved regional supplies, conservation, and water use efficiency.
As stated in MWD’s 2025 UWMP,
Metropolitan’s service area, as a whole, reduces reliance on the Delta through investments in non-Delta water supplies, local water supplies, and regional and local demand management measures. Consistent with MWD’s 2025 UWMP, reduced reliance on supplies from the Delta watershed is evaluated at the regional level through changes in regional self-reliance and total reliance on Delta supplies. Metropolitan’s member agencies coordinate reliance on the Delta through their membership in Metropolitan, a regional cooperative providing wholesale water service to its 26 member agencies.
Accordingly, regional reliance on the Delta can only be measured regionally—not by individual Metropolitan member agencies and not by the customers of those member agencies.
Refer to Appendix D for further discussion.
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2 Plan Preparation
This section provides information on why a UWMP is required, the processes used to develop the UWMP, and an overview of the coordination and outreach efforts the city undertook to solicit diverse feedback and meet applicable requirements.
IN THIS S ECTION
• Basis for Preparing a Plan
• Regional Planning
• Coordination and Outreach
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2.1 Basis for Preparing a Plan
Lomita’s 2025 UWMP was prepared in accordance with the UWMP Act which was established in 1983. The UWMP Act requires every “urban water supplier” to prepare and adopt a UWMP, to periodically review its UWMP at least once every five years and make any amendments or changes which are indicated by the review. An “Urban Water Supplier” is defined as a supplier, either publicly or privately owned, providing water for municipal purposes either directly or indirectly to more than 3,000 customers or supplying more than 3,000 AFY.
Lomita is an “urban water supplier” pursuant to Section 10617 of CWC and directly serves potable water to more than 3,000 customers at retail for municipal purposes. Lomita’s 2025 UWMP is an update to Lomita’s 2020 UWMP (West & Associates Engineering, Inc, 2022).
Pursuant to CWC requirements, Lomita’s 2025 UWMP incorporates DWR’s standardized tables for the reporting and submittal of UWMP data. All required tables are attached in Appendix B.
Lomita also submitted the UWMP data (from the standardized tables) electronically through DWR’s Online Submittal Tool.
Lomita is a Public Water System (CA1910073) and is regulated by the State Water Resources Control Board, Division of Drinking Water, who requires water agencies to provide the number of connections, water usage, and other information annually. In 2025, Lomita supplied 1,911 AF of water and served 4,490 municipal connections.
Lomita’s 2025 UWMP has been prepared using calendar years and water use is reported in AF.
Per capita water use is reported as gallons per capita per day (GPCD).
2.2 Regional Planning
While Lomita closely collaborates with WBMWD, the city has prepared an individual 2025 UWMP. The goal of this UWMP is to address all the requirements of CWC.
2.3 Coordination and Outreach
Lomita has provided WBMWD, the city’s water wholesaler, with projected water use in accordance with CWC 10631 and has relied upon water supply information provided by WBMWD, as well as from MWD, in preparing its 2025 UWMP.
Table 2-1 lists the entities that Lomita coordinated with in the development of Lomita’s 2025 UWMP. Lomita’s water supply planning considers the programs of local and regional water agencies. This UWMP details the specifics as they relate to Lomita’s water service area and refers to MWD, WBMWD, the Water Replenishment District (WRD) and other agencies throughout.
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Table 2-1: Coordination and Public Involvement
Agency
Customer
Meeting /
Workshop
60-Day
Notification
Copy Of
Draft UWMP
West Basin Municipal Water District ✓ ✓
Los Angeles Department of Water & Power ✓ ✓
Los Angeles County Waterworks ✓ ✓
Los Angeles County Department of Public Works ✓ ✓
City of Torrance ✓ ✓
Water Replenishment District ✓ ✓
For its long-term water supply, Lomita relies on imported water from MWD through WBMWD and groundwater from the West Coast Groundwater Basin, which is managed by WRD.
Accordingly, Lomita’s water supply planning is partially based on the policies, rules, and regulations of these three water agencies.
Development of the city’s UWMP was coordinated with WRD and WBMWD and, pursuant to CWC 10621(b), Los Angeles County was notified of the opportunity to review the UWMP. In accordance with California Water Code Section 10642, Lomita made the UWMP and WSCP available for public review and conducted a public hearing with notice provided pursuant to Government Code Section 6066. Public notice was published for two successive weeks and identified the time and location of the hearing as well as where the Draft UWMP could be reviewed. The draft UWMP was made available on Lomita’s website to facilitate public access and participation.
See Appendix E for copies of all notifications.
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3 System Description
This section describes Lomita’s water system, service area, population demographics, local climate, and land uses. Lomita is a small, incorporated general-law city in southern Los Angeles County that operates as a retail water agency within
WBMWD’s service area and is part of WBMWD Division 3.
Lomita’s water system includes 43 miles of pipelines, one well, and two reservoirs, with about 70% of the infrastructure built between 1928 and 1970.
IN THIS S ECTION
• General Description
• Service Area Boundary
• Service Area Climate
• Service Area Population
• Land Uses
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3.1 General Description
Lomita is located in the southern portion of Los Angeles County, approximately 26 miles south of downtown Los Angeles. Lomita’s total land area is 1,261 acres or 1.97 square miles. Lomita is a retail agency and within WBMWD’s service area. The city, along with the cities of Hermosa Beach, Manhattan Beach, Redondo Beach, and a portion of Torrance constitute Division 3 of the WBMWD’s five divisions.
Lomita was incorporated in 1964 and is a general-law city. The city operates under a City Council/City Manager form of government. The City Council consists of five Council Members elected to four-year terms, and one member is selected to serve as Mayor for a one-year term.
The City Manager, who serves on behalf of the City Council, runs the day-to-day operations of the city. Under the City Manager’s general oversight, the city’s Public Works Director runs the Public Works Department, which includes the city’s Water Division. The city’s Water Division performs all activities related to the water system.
3.2 Service Area Boundary Map
The city is served by two water purveyors. Lomita’s water service area comprises about 96% of the population residing within the city limits. Figure 3-1 shows the service area boundary map and surrounding area. A small, mostly hilly area (211 homes) south of Via Madonna is served by California Water Service.
Lomita’s water distribution network includes roughly 43 miles of pipelines ranging in size from 2 inches to 16 inches in diameter, one potable water well, and two storage reservoirs: Harbor Hills (100,000-gallon capacity) and Cypress (5.3-million-gallon capacity). Approximately 70% of the system was constructed between 1928 and 1970.
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Figure 3-1: Lomita Water Service Area
Source: Water Master Plan (Dudek, 2022)
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3.3 Service Area Climate
Lomita has a Mediterranean climate with moderate, dry summers and cool winters in which most rain falls. Climate data from the California Irrigation Management Information System (CIMIS) Station 174 Long Beach from 2001 through 2025 was used to evaluate the local climate conditions. The climate for Lomita is consistent with coastal Southern California. The general region lies in the semi-permanent high-pressure zone of the eastern Pacific. As a result, the climate is mild and tempered by cool sea breezes. The usually mild climatological pattern is interrupted infrequently by periods of extremely hot weather, winter storms, or Santa Ana winds.
On average, the annual total precipitation is 10.0 inches and most of the precipitation typically occurs between the months of December and March. The annual average total evapotranspiration is 45.5 inches, and the highest evapotranspiration is experienced between April and September, with the peak occurring in July. Lomita’s monthly average temperature ranges from about 54 to 71 degrees Fahrenheit (°F), with an average annual high temperature of 62°F. Figure 3-2 shows the annual precipitation from 2001 through 2025 and illustrates which years fall above or below the annual average precipitation for this period. Table 3-1 shows the monthly averages for precipitation, evapotranspiration, and temperature.
Figure 3-2: Annual Precipitation from 2001-2025
0 5
10 15
20 25
30 Precipitation (inches)
Total Yearly Precipitation Average Yearly Precipitation Tuesday, June 16, 2026 Reg CC MTG, Page *478
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Table 3-1: Average Monthly Climate Data
MONTH AVERAGE
PRECIPITATION
(INCHES)
AVERAGE
EVAPOTRANSPIRATION
(INCHES)
AVERAGE AIR
TEMPERATURE
(˚F)
January 1.6 2.0 54.0
February 2.6 2.4 54.7
March 1.4 3.7 57.2
April 0.5 4.6 59.3
May 0.3 5.0 61.4
June 0.0 5.0 67.0
July 0.1 5.8 69.9
August 0.1 5.6 70.6
September 0.1 4.5 70.0
October 0.4 3.3 65.3
November 0.7 2.2 58.8
December 2.2 1.6 53.9
ANNUAL AVERAGE: 10.1 45.5 61.9
Source: CIMIS Station No 174, monthly data from 2001 – 2025 (DWR, 2025)
3.4 Service Area Population
Spatial analysis of 2020 census data was used to estimate that approximately 96% of the city’s population lives within Lomita’s water service area. This service area factor was then applied to the latest 2025 California Department of Finance population estimates to arrive at an estimated 2025 water service area population of 19,643. For UWMP planning purposes, population projections for 2030-2050 were based on estimated projections of likely growth. Southern California Association of Governments (SCAG) projections for Lomita’s service area were evaluated and projected minimal growth over the planning period. However, the city has significant new construction targets in its 6
th Cycle Regional Housing Needs Allocation. To plan
for meeting these targets, an additional 2,400 housing units and an estimated 2.5 people per unit were projected to be occupied by 2050 within the service area, in addition to the SCAG projections, resulting in a buildout 2050 service area population projection of approximately 25,800. Current and projected population for the service area is provided in Table 3-2.
Table 3-2: Current and Projected Population
2025 2030 2035 2040 2045 2050
Estimated Population 19,643 20,914 22,186 23,392 24,598 25,804 Tuesday, June 16, 2026 Reg CC MTG, Page *479
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These projections were compared to Lomita’s projected growth in its updated 2024 General Plan and Housing Element (City of Lomita, 2024), which would equate to an estimated service area population of just under 28,300. The resulting projections used in this UWMP for water planning purposes are conservatively in between minimal-growth SCAG projections and highgrowth projections from the General Plan. These projections show a significant increase in population over the planning horizon and will be updated in future UWMPs to continue to incorporate the best available information.
3.5 Land Uses within Service Area
Land use in the water service area is shown in Figure 3-3. Lomita reviewed the current and projected land uses within its service area during the preparation of this 2025 UWMP.
Information regarding current and projected land use is included in Lomita’s General Plan (City of Lomita, 2024). The existing land uses within Lomita’s service area include single family and multi-family residential, commercial, industrial, and landscape. Future land use under the updated General Plan is anticipated to remain relatively stable, with focused efforts to expand housing opportunities consistent with State requirements and to support enhanced commercial activity in specific corridors along the Pacific Coast Highway, Lomita Boulevard, and Narbonne Avenue.
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Figure 3-3: Land Use within Service Area
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4 Water Use Characterization
This section describes and quantifies Lomita’s past, current, and future water use through 2050. This section also provides discussion on water use for lower income households and climate change considerations.
IN THIS S ECTION
• Historic and Projected Water Use
• Water Use for Lower Income
Households
• Climate Change Considerations
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4.1 Historic Water Use
Lomita’s water demand consists of mostly residential demands in addition to commercial and institutional demands. In 2025, the city’s total water demand was 1,910 AF, which was met entirely with imported water supply. Non-potable recycled water supply is not utilized in the service area.
Lomita maintains records of water consumption and bills its customers on a bi-monthly basis for water service. Nearly 94 percent of the total service connections are residential (single or multifamily), with most of the remainder being either commercial or institutional accounts. The city records water use per service connection and bills customers based on a single water rate structure. The city tracks water sales by the following sectors:
• Residential (including single-family and multi-family) • Commercial
• Government
• School
• Church
4.1.1 Historic Water Use
Total water use within Lomita’s service area has declined over the past 25 years despite a minor increase in population over the same period. Water conservation and improvements in water use efficiency have outweighed additional use from new customers. Historical annual water use over the past 25 years has ranged from a high of 2,835 AF in 2002 to a low of 1,823 AF in 2023, as shown in Figure 4-1.
Figure 4-1: Total Water Use, 2000-2025
Water use by use type from 2021 to 2025 is summarized in Table 4-1.
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Table 4-1: Summary of Past Water Use (AFY)
Use Category 2021 2022 2023 2024 2025
Church 16 15 11 13 12
City 59 18 13 15 16
Commercial 209 210 191 204 191
Government 100 89 94 79 81
Residential 1,585 1,458 1,376 1,406 1,439
School 33 40 33 27 27
Losses 8 82 104 129 146
Total 2,009 1,912 1,823 1,874 1,911
4.1.2 Distribution System Water Losses
Distribution system water losses are the physical potable water losses from the point of water entry to the distribution system to the point of delivery to the customer’s system. Water loss can result from aging infrastructure, leaks, seepage, theft, metering inaccuracies, data handling errors, and other causes. Addressing water losses can decrease water demands and recover revenue.
Lomita completes annual water loss audits and audits for 2020-2024 were reported by the city to DWR. Water loss audit real losses are summarized in Table 4-2.
Table 4-2: 2020-2024 Audited Distribution System Water Losses 2020 2021 2022 2023 2024
WUE Audit Reported Real Losses, AFY 26 17 78 85 115
Calculated total water losses from water supply and consumption data (calculated as the difference between billed consumption and total production) are included in Table 4-1 and are different than audited distribution system real losses since they do not account for apparent losses and include other system losses such as treatment process losses. The total calculated difference between total production and consumption averaged approximately 5% of total water demand from 2021-2025.
4.2 Projected Water Use
Water demand through 2050 was projected using a scenario-based approach. Multiple different scenarios were developed and evaluated to establish a range of potential future outcomes.
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Historical data and trends were developed and analyzed alongside projections from various other sources. Trends and projections evaluated included:
• Average historical water use by customer type
• Historical and projected population, household, employment, and connection growth rates
• Review of major developments and associated demand projections • Anticipated Urban Water Use Objective targets
• Historical and a range of potential future conservation scenarios In general, projected population growth is expected to place upward pressure on water demand, but gradual adoption of water‑efficient fixtures and landscaping, along with increased public awareness of conservation practices and policies, is expected to reduce per-capita water use, counterbalancing some of the potential increase associated with population growth.
Future demand through 2050 was projected using a scenario that best represented future anticipated changes. The major assumptions used to develop the demand projections are listed below:
Baseline Water Use: Baseline water use per connection was established for each connection type (single family residential, multifamily residential, commercial, etc.) based on 2021 to 2025 historic water use.
Growth Rate: Residential demand growth rates were based on the population projections described in Section 3.4, which included accommodation for Regional Housing Needs Allocation targets. Projected commercial connection growth is based on employment projections developed by SCAG. Other connection types are based on historical trends. Commercial and institutional connections follow historic connections growth.
Conservation: Future downward pressure on urban water use is expected to be driven by the “Making Water Conservation a California Way of Life” Regulation (CWOL Regulation) which became effective January 1, 2025, and requires urban water suppliers to demonstrate compliance with the Urban Water Use Objective (UWUO) beginning January 1, 2027. The UWUO includes the following:
• An indoor per-person water use goal of 55 gallons per day until 2025, 47 gallons from 2025 to 2030, and 42 gallons beginning in 2030
• A standard for residential outdoor and dedicated irrigation meter water use based on climate and landscaped area of the urban water provider. The landscape efficiency factors used to calculate the residential outdoor water budget is 0.8 through 2035, reduces to 0.63 from 2035 to 2040, and is 0.55 beginning 2040. The landscape efficiency factors used to calculate dedicated irrigation meter water budget are 0.8 from 2028 to 2035, 0.63 from 2035 to 2040, and 0.45 in 2040 and beyond. • Supplier specific water distribution system water loss standard. The city’s water loss standard is 14.8 gallons per service connection per day for real water losses and 4.75 gallons per service connection per day for apparent losses.
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The city’s estimated future UWUO was used to estimate potential future conservation required to meet the target. Additional details on the UWUO are included in Section 4.2.2. Ultimately, a
0.5% annual reduction in water use across every use category was assumed to be achieved for existing demands in addition to a 10% reduction in demand (in comparison to baseline) for new connections. This target would require the city to maintain historical average reductions in per capita water use into the future. Lomita does not have an active water conservation program, but customers in the service area can access conservation rebates and programs through WBMWD, and passive conservation savings over time is anticipated to continue due to factors such as turnover of fixtures and irrigation equipment, code‑driven water efficiency standards, and behavioral water savings.
Water Loss: Water losses over the past 5 years have averaged approximately 5%. For demand projections, future water loss was conservatively assumed to be 6.5% of total demand.
Table 4-3 summarizes projected water demand by use type over the planning horizon. Figure 4-2 visualizes the past 10 years of water demand by grouped sectors in comparison to the projection for the next 25 years based on the selected assumptions.
Table 4-3: Summary of Projected Water Use (AFY)
DWR Use Type Description 2030 2035 2040 2045 2050
Other Residential 1,506 1,555 1,601 1,648 1,695
Commercial Commercial 197 194 190 186 183
Governmental/
Institutional
Church 10 11 11 12 12
City 22 21 21 20 20
Government 79 78 76 75 73
School 29 28 28 27 26
Losses Losses 120 123 125 128 131
Total 1,963 2,010 2,052 2,096 2,140
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Figure 4-2: Historic and Projected Water Demand, 2016-2050
4.2.1 Characteristic Five-Year Water Use
In addition to past and projected uses, the UWMP more closely analyzes anticipated conditions for the next five years (2026 – 2030). In the next five years, Lomita anticipates that demand may increase by approximately 52 AFY from current conditions.
Table 4-4: Characteristic Five-Year Water Use (AFY)
2026 2027 2028 2029 2030
Potable Water 1,922 1,932 1,942 1,953 1,963
4.2.2 Urban Water Use Objective
As mentioned in Section 4.2, new water use efficiency standards from the CWOL Regulation supersede SBX7-7 standards. In 2018, following an unprecedented Statewide drought, the California Legislature established the CWOL Regulation with the goal of helping the State better Tuesday, June 16, 2026 Reg CC MTG, Page *487
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prepare for droughts and climate change by establishing statewide water efficiency standards and incentivizing recycled water (DWR, 2018).
The resulting legislation of Senate Bill 606 and Assembly Bill 1668 and the water use regulations officially adopted by the SWRCB on July 3, 2024, establish unique water budgetbased UWUO for each urban retail water supplier in the State. The regulation requires suppliers to calculate an annual UWUO consisting of these core components:
• Residential Indoor Water Use Budget
• Residential Outdoor Water Use Budget
• Commercial, Industrial, and Institutional (CII) Dedicated Irrigation Meters Outdoor Water Use Budget
• Real Water Loss Budget
Each component has associated water efficiency standards that become increasingly stringent through 2040, as shown in Table 4-5. The key standards are residential indoor in GPCD, Landscape Efficiency Factors (LEF) for calculating the outdoor water use budget, and real water loss measured in gallons per service per capita per day. Annually updated supplier-specific input data is also required for population, climate, landscapes, and real water losses. The UWUO does not include some uses, such as CII indoor use or other uses that are considered “Excluded Demands.”
Table 4-5: Water Efficiency Standard by Reporting Period Fiscal Year Residential
Indoor GPCD
Residential
Outdoor LEF
CII Dedicated
Irrigation Meters
Real Water Loss
Budget1
23/24 55 0.8 Actual Reported
“Landscape” Volume
Actual Reported or
Budget
25/26 47 0.8
Actual Reported
“Landscape” Volume
Actual Reported or
Budget
30/31 42 0.8
0.8 LEF
(starts July 1, 2028)
Budget
(starts July 1, 2027)
35/36 42 0.63 0.63 LEF Budget
40/41 42 0.55 0.45 LEF Budget
Notes: The Real Water Loss Budget is a supplier standard for real water loss (14.8 gallons per service per capita per day for Lomita) applied to the total service connections for the year.
DWR and the SWRCB have developed an annual reporting framework, tools, and guidance for calculating the UWUO and comparing it to the actual use for that year. The SWRCB’s “Water Use Objective Exploration Tool” allows users to enter varying efficiency standards and baseline year(s) of input data to calculate and visualize a comparison of historic demand to the UWUO with selected standards. The SWRCB’s “Annual UWUO and Water Use Report” tool prepopulates input data and standards for the given reporting year. To project demands for this UWMP, a demand tool that aligns with the framework, data, and calculations of the State Tuesday, June 16, 2026 Reg CC MTG, Page *488
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Board’s tools was used and expanded to allow for forecasting future year demands considering adopted efficiency standards, supplier input data, and growth assumptions.
4.3 Water Use for Lower-Income Households
CWC Section 10631.1 requires demand projections to include projected water use for singlefamily and multi-family residential housing needed for lower-income households. Lower-income households are defined as households making less than 80% of area mean income, adjusted for family size.
Approximately 46% of existing households in the city (3,605 out of 7,890 total) qualify as lower income households in the latest Comprehensive Housing Affordability Strategy data based on 2018-2022 American Community Survey data (U.S. Department of Housing and Urban Development, 2025).
SCAG allocated RHNA New Construction objectives of 829 units to Lomita for the 6th Cycle (2021-2029) planning period. These objectives were divided according to the following income distribution:
• Extremely Low/Very Low Income: 239 units
• Low Income: 124 units
• Moderate Income: 128 units
• Above Moderate Income: 338 units
Lower income new construction objectives total 363 units, or 44% of the total objective. If new construction targets are achieved in alignment with the planned distribution, an estimated 46% of total housing units would qualify as lower-income if income distributions remain constant.
Lower-income residential water demand was assumed to be 46% of existing and projected future residential demand, as summarized in Table 4-6.
Table 4-6: Lower-Income Demand Projection
Residential Demand 2025 2030 2035 2040 2045 2050
Lower-Income 655 685 708 729 750 771
Other 784 820 847 872 898 924
Total 1,439 1,506 1,555 1,601 1,648 1,695
4.4 Climate Change Considerations
Climate change is a special concern for water resource management because of the range of potential scenarios and their potential impacts on water supplies and demands. Precipitation and temperature primarily influence water demand for landscape irrigation and other outdoor water uses. Generally, when the weather is hotter and dryer, water use increases. The amount of increase varies based on the duration and intensity of hot, dry weather and the conservation Tuesday, June 16, 2026 Reg CC MTG, Page *489
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activities imposed. During cooler, wetter periods, water use generally decreases due to reduced outdoor water needs.
Analysis from California’s Fourth Climate Change Assessment, using the Cal‑Adapt tool, projects an increase in baseline temperature in Lomita by approximately 2.9 to 3.7 degrees Fahrenheit (DWR, 2018). Under hotter and drier conditions, water needed for outdoor irrigation will need to increase to maintain healthy plants, evaporative losses will increase, and water use for commercial and industrial cooling is expected to rise. The potential impact on projected future demand was considered in the assumptions and scenarios evaluated in Section 4.2.
Lomita has long supported practical measures to improve energy efficiency and implement renewable energy technologies, including use of solar photovoltaic and cogeneration facilities.
In partnership with the South Bay Cities Council of Governments, Lomita developed a comprehensive Climate Action Plan in 2018 for the purpose of enhancing the community, promoting zero emission vehicles, advancing strategies for low energy buildings, promoting waste reduction, green space development, and advancing strategies for renewable energy (City of Lomita, 2018). Although the Climate Action Plan outlines potential climate changerelated impacts on Lomita’s water resources, impacts on water availability are not quantified.
The potential for ongoing changes to the local climate and the resulting impacts on supplies are further discussed in Section 6. Planning for potential water shortages is discussed in the WSCP in Appendix C.
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5 SB X7-7 Baselines, Targets, and
2025 Compliance
This section provides a brief overview of the Water
Conservation Act of 2009 (Senate Bill X7-7) and demonstrates Lomita’s compliance with the 20% reduction by 2020 target.
IN THIS S ECTION
• SBX7-7 Forms and Tables
• 2020 Compliance
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Senate Bill 7 of Special Extended Session 7 (SBX7-7) was incorporated into the UWMP Act in 2009 and requires that all water suppliers increase water use efficiency with the overall goal to decrease per-capita water consumption within the state by 20 percent by the year 2020.
SBX7-7 required DWR to develop certain criteria, methods, and standard reporting forms through a public process that water suppliers could use to establish their baseline water use and determine their water conservation targets. SBX7-7 and DWR's Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use (DWR, 2016) specify methodologies for determining the baseline water demand, 2015 interim urban water use target, and the 2020 urban water use target as described in the 2020 UWMP. This section also demonstrates that Lomita achieved its 2020 water use target.
Lomita’s actual 2020 GPCD was 95 GPCD, which is significantly lower than the adopted 2020 target of 118 GPCD. The city’s per-capita water use during CY 2020 meets the 2020 Water Use Target and is in compliance, as shown in Table 5-1.
Table 5-1: SB X7-7 2020 Target Progress
2020 Target Actual 2020 GPCD Did Supplier Achieve Targeted Reduction for 2020?
118 95 Yes
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6 Water Supply Characterization
This section describes and quantifies Lomita’s current and projected potable water supplies. It provides a narrative description of each supply source and quantifies the supply availability for each supply source identified.
IN THIS S ECTION
• Water Supply Overview
• Water Supply Characterization
• Energy Intensity
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6.1 Water Supply Overview
This section describes the current and projected water resources available to the city over a 25- year period. Lomita’s water supply sources include groundwater pumped from the West Coast Basin and imported water purchased from WBMWD. Groundwater is produced via a city-owned and operated well. Lomita uses imported water to meet the difference in demand and groundwater supply. Imported water is purchased by the city from WBMWD, which receives imported supply from the MWD. The city does not utilize any non-potable recycled water.
Lomita’s only groundwater well was offline from 2019-2025 due to water quality issues and construction of a treatment system to resolve the issues. In the interim, the city imported 100 percent of its water from WBMWD. Initial groundwater extraction restarted in late 2025 and production is expected in 2026 as the city finishes construction of their groundwater treatment project. Lomita’s actual water supply over the past five years is summarized in Figure 6-1.
Figure 6-1: Lomita Water Supplies, 2021-2025
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6.2 Water Supply Characterization
6.2.1 Imported Water
Lomita receives imported water supplies from WBMWD. WBMWD is a wholesale water agency in southwestern Los Angeles County that provides imported drinking water to 9 agencies spanning 17 cities and unincorporated areas of Los Angeles County throughout its 185-squaremile service area. WBMWD and its customer agencies operating within WBMWD’s service area develop local groundwater and recycled water supplies.
WBMWD receives imported water supplies through MWD, which receives its imported water supplies from the Colorado River and the State Water Project (SWP). MWD also manages a vast network of infrastructure designed to provide water to its 26 member agencies in Southern California. This section describes imported water supplies based on the Draft MWD 2025 UWMP (MWD, 2026) and the Draft WBMWD 2025 UWMP (Water Systems Consulting, Inc, 2026).
6.2.1.1 Imported Water Supplies
MWD receives its imported water supplies from the Colorado River and the SWP.
Colorado River Supplies
The Colorado River was MWD’s original source of water following its establishment in 1928.
MWD has a legal entitlement to receive water from the Colorado River under a permanent service contract with the United States Secretary of the Interior.
Created in 1928, MWD’s founding mission was to build and operate the Colorado River Aqueduct. MWD helped forge landmark federal agreements like the Boulder Canyon Project Act, which divided up the Colorado River water supply and led to the creation of Hoover Dam.
MWD began diverting Colorado River water in 1939, through the Colorado River Aqueduct, and delivering water to the Los Angeles region in 1941. The Colorado River is governed by the “Law of the River,” a complex collection of compacts, treaties, laws, court decisions, and contracts which governs water allocations and operations among seven western states, native American tribes, and Mexico.
With a capacity of 1.25 million AFY, the Colorado River Aqueduct transports water from Lake Havasu, at the border of California and Arizona, approximately 242 miles west to its terminus at Lake Mathews in Riverside County and MWD’s service area. The Colorado River Aqueduct and its California water users are shown in Figure 6-2.
Over the years, MWD has increased supply reliability of the Colorado River through programs that it helped fund and implement, including:
• Farm and irrigation district conservation programs
• Improved reservoir system operations
• Land management programs
• Storage programs
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• Invasive species control programs
• Water transfers and exchanges through arrangements with:
o Agricultural water districts in southern California
o Entities in Arizona and Nevada that use Colorado River water o US Department of the Interior, Bureau of Reclamation (USBR) Figure 6-2: Colorado River Aqueduct
Source: MWD 2025 UWMP (MWD, 2026)
State Water Project Supplies
When the SWP was constructed in the 1960s and 1970s, MWD became the largest of the system’s statewide contractors. SWP is a multi-purpose water storage and delivery system that extends more than 700 miles, two-thirds the length of California, and transports Feather River water stored in and released from Oroville Dam and conveyed through the Bay-Delta, as well as unregulated flows diverted directly from the Bay-Delta, south via the California Aqueduct to four delivery points, which include one from the California Aqueduct’s West Branch at Castaic Lake Tuesday, June 16, 2026 Reg CC MTG, Page *496
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and three from the East Branch along the northeastern portion of MWD’s service area between Devil’s Canyon Power Plant and Lake Perris. The southern portion of the SWP is shown in Figure 6-3. SWP supplies fluctuate based on snowpack and precipitation in the Northern Sierras and are subject to constraints designed to protect fish species and water quality in the Delta.
Figure 6-3: State Water Project
Source: MWD 2025 UWMP (MWD, 2026)
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In 1960, MWD signed a water supply contract with DWR for participation in the SWP. MWD is one of 29 agencies that have long-term contracts with DWR and are participants in the SWP. It is the largest SWP agency in terms of the number of people it serves, the share of SWP water that it is allocated (approximately 46%), and the percentage of total annual payments made to DWR (approximately 52% in 2025) (MWD, 2026).
MWD provides imported drinking water directly to WBMWD’s nine customer agencies. The relationship between WBMWD and its customer agencies is shown in Figure 6-4. WBMWD’s service area is shown in Figure 6-5, and the cities and communities within their associated divisions are described below.
Figure 6-4: WBMWD Customer Agencies
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Figure 6-5: WBMWD Municipal Water District Service Area
6.2.1.2 Supply Capabilities
The MWD 2025 UWMP reports on MWD’s water reliability and identifies projected supplies to meet the long-term demand within its service area. For the MWD 2025 UWMP, supply capabilities were evaluated using the following assumptions for its imported supplies.
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Colorado River Supplies
Colorado River supplies include MWD’s basic Colorado River apportionment as well as supplies that result from existing and committed programs, including those from the Imperial Irrigation District System Conservation Program, the implementation of the Quantification Settlement Agreement, related agreements, the Palo Verde Irrigation District Land Management Program, the Crop Rotation Program, the Water Supply Program, the Lower Colorado River Water Supply Projection, and the exchange agreement with San Diego County Water Authority.
In response to declining reservoir levels, the Lower Basin Drought Contingency Plan was signed in 2019. This agreement incentivizes storage in Lake Mead and requires that certain volumes of water be stored in Lake Mead under certain Lake Mead elevation levels through 2026. Once Lake Mead’s water level falls below an elevation of 1,045 feet, MWD has agreed to store a specified volume of water in Lake Mead to create an intentional surplus for drought conditions as part of the Drought Contingency Plan. The goal of this agreement is to keep Lake Mead above critical elevations, and overall, it increases MWD’s flexibility to store water in Lake Mead in greater volumes and to accept delivery of stored water to fill the Colorado River Aqueduct as needed.
At the time of this report, negotiations over the successor post-2026 guidelines are ongoing, and the outcome is highly uncertain. However, it is anticipated that California will likely be required to reduce its supplies from the Colorado River, on average, under the new guidelines, and that as the junior priority, MWD is at risk.
Projections for Colorado River supplies for the 2025 UWMP are based on the USBR Colorado River Simulation System modeling developed in August 2023, which is the latest available at the time of production of this plan. USBR modeling is used to estimate MWD’s basic apportionment and the availability of Quantification Settlement Agreement and other related programs.
State Water Project Supplies
SWP supplies are estimated using the 2025 Draft SWP Delivery Capability Report (DWR, 2025). The 2025 Draft SWP Delivery Capability Report presents DWR estimates of the amount of SWP deliveries for current (2025) conditions and SWP deliveries for 20 years in the future considering only currently operating and existing SWP facilities. Any changes in supply reliability that would result from new facilities proposed under the Delta Conveyance Project and Sites Reservoir are not included. These estimates incorporate restrictions on SWP and Central Valley Project operations in accordance with water quality objectives established by the State Board, the biological opinions of the US Fish and Wildlife Service and National Marine Fisheries Service issued on November 8, 2024, biological opinions of the National Marine Fisheries Service issued on December 6, 2024, and the Incidental Take Permit issued by the California Department of Fish and Wildlife on November 4, 2024. In addition, these estimates incorporate amendments to the Coordinated Operations Agreement between the SWP and Central Valley Project made in 2018. Under the 2025 SWP Delivery Capability Report - Existing Condition Scenario, the delivery estimates for the SWP for 2025 conditions as a percentage of Table A amounts are 54% under a long-term average condition.
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In dry, below-normal conditions, MWD has increased the supplies received from the California Aqueduct by developing flexible Central Valley/SWP storage and transfer programs. Over the years, under the pumping restrictions of the SWP, MWD has collaborated with the other contractors to develop numerous voluntary Central Valley/SWP storage and transfer programs.
The goal of these storage/transfer programs is to develop additional dry-year supplies that can be conveyed through the California Aqueduct during dry hydrologic conditions and to meet regulatory restrictions.
The State Board is currently in the process of updating the Bay-Delta Plan focused on the Sacramento River and its tributaries, Delta eastside tributaries (including the Calaveras, Cosumnes, and Mokelumne Rivers), interior Delta flows, and Delta outflows, including consideration of proposed voluntary agreements or the Healthy Rivers and Landscapes approach. Healthy Rivers and Landscapes is an alternative approach to what otherwise would be a mandated regulatory pathway based largely on unimpaired flow requirements.
There are two major efforts to increase SWP supply capabilities undertaken by the Sites Project Authority and the Delta Conveyance Design and Construction Authority as described below:
• Sites Reservoir Project: The proposed Sites Reservoir Project would be a 1.5 million acre-foot off stream surface storage reservoir located in the Sacramento Valley west of the town of Maxwell, North of the Delta. Sites Reservoir is designed to capture and store water during wet periods, ensuring flexibility, reliability, and resiliency during dry years.
Operation of the proposed reservoir would be in cooperation with the operations of existing Central Valley Project (CVP) and SWP system facilities. In January 2026, the Sites Project Authority stated that based on actual river flows, recent analysis found Sites could have diverted 1.35 million acre-feet during the 2024-2025 Water Year. In January 2026, Sites Project Authority announced that recent federal funding commitments had increased total federal funding to $646.15 million. In addition, Sites received State funding commitments of $875 million through the Prop 1 Water Storage Investment Program. In March 2026, the State Water Resources Control Board released a draft decision and conditional approval for a water right permit which will provide legal authority to divert water within certain conditions, for a specific purpose, and for use within a specified area.
• Delta Conveyance Project: The proposed Delta Conveyance Project (DCP) will modernize the SWP by making physical improvements to how the State captures and moves water during wet years for use in dry years with a single tunnel system. The DCP is intended to restore the reliability of the SWP and ensure California’s largest supply of clean and affordable water for 27 million people and what would be the 8th largest economy in the world in Southern California. In 2024, an updated cost estimate was prepared by the Delta Conveyance Design and Construction Authority (DCA), using a detailed and rigorous approach, finding that the benefits outweigh the costs and every dollar spent generates $2.20 in benefits. For Water Year 2024-2025, DWR estimates that if the DCP was operational, 956,000 acre-feet of water could have been captured Tuesday, June 16, 2026 Reg CC MTG, Page *501
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and moved. The DCP includes extensive public engagement and includes a community benefits program, tribal engagement, and environmental review.
Since this UWMP uses DWR’s 2025 SWP Delivery Capability Report to estimate future SWP supplies, any changes in supply reliability that would result from new facilities proposed under the proposed Delta Conveyance Project and Sites Reservoir are not included in the following tables. The study showed that if no action is taken that the combined effects of subsidence and climate change could reduce deliveries by 23% by 2043.
Storage
A key component of MWD’s water supply capability is the amount of water in MWD’s storage facilities. Over the past two decades, MWD has developed a large regional storage portfolio that includes both dry-year and emergency storage capacity. Storage is a key component of water management and enables the capture of surplus amounts of water in both normal and wet climate and hydrologic conditions when it is plentiful for supply and environmental uses. Stored water can then be used in dry years and in conditions where augmented water supplies are needed to meet demands.
In developing the supply capabilities for the 2025 UWMP, MWD assumed the current (2025) storage levels at the start of simulation and used the median storage levels going into each of the five-year increments based on the balances of supplies and demands. Under the median storage condition, there is an estimated 50% probability that storage levels would be higher than the assumption used, and a 50% probability that storage levels would be lower than the assumption used. All storage capability figures shown in MWD’s 2025 UWMP reflect actual storage program conveyance constraints. It is important to note that under some conditions, MWD may choose to implement its Water Supply Allocation Plan to preserve storage reserves for a future year instead of using the full supply capability. This can result in impacts at the retail level even under conditions where there may be adequate supply capabilities to meet demands.
Regional Conveyance
The 2025 Seismic Resilience Report provides an overview of MWD’s current seismic resilience strategy and the infrastructure improvements made to mitigate potential impacts to facilities and systems from earthquake hazards (MWD, 2025).
Under the Planning component, water supply diversification and improved system flexibility continue to be the primary goals for increased resilience. The Diamond Valley Lake to Rialto Pipeline Project and Sepulveda Feeder Pump Project will improve MWD’s ability to move Colorado River or stored water within Diamond Valley Lake to member agency service areas that are highly dependent on State Water project supplies improving both drought and seismic resilience for these areas.
The Sepulveda Feeder Pumping Project will construct two pump stations along the Sepulveda Feeder to enable delivery of treated Colorado River or stored SWP supplies to member agencies in MWD’s western service area that are highly dependent on SWP supplies from the California Aqueduct West Branch. This project enhances supply reliability in the western service Tuesday, June 16, 2026 Reg CC MTG, Page *502
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area and increases overall system flexibility. Many of WBMWD’s retail agencies receive water directly, or partially, from the Sepulveda Feeder.
6.2.1.3 Imported Water Reliability
Historically, imported supplies have been generally reliable. Since 1991, MWD has made significant investments in conservation, water recycling, storage, and improved supplies.
Groundwater storage programs with Semitropic Water Storage District and Arvin-Edison Water Storage District increase MWD’s out-of-region storage capacity of SWP water by 600,000 AF.
Additional groundwater storage programs have been established with the San Bernardino Valley Municipal Water District and Kern-Delta Water District that will expand that capacity further. The completion of Diamond Valley Reservoir has added 800,000 AF of supply to southern California’s mix of resources available to meet dry year needs. MWD has historically been a strong proponent of alternative Delta conveyance, investing in the planning and design of the Delta Conveyance Project to facilitate the implementation of the long-discussed tunnel to increase reliability of SWP supplies.
Despite these investments, there have been recent imported water shortages due to increased drought frequency. In 2015, during the 2012 to 2016 drought, MWD enacted its Water Supply Allocation Plan issuing a reduction in imported water allocations to WBMWD and its retailers.
Considering this, MWD estimates imported water supply reliability for its Member Agencies, including WBMWD, for use in their 2025 UWMPs. MWD has undertaken several planning initiatives over the years to provide a policy framework, operating guidelines, and resource targets for MWD to ensure regional water supply reliability. MWD’s regional supply planning is typically completed through their Integrated Resources Planning (IRP) process. The IRP is MWD’s long-term, comprehensive water resources planning strategy to assess reliability for the region by considering overall demands for the MWD service area relative to local supplies and imported water availability. The IRP analyzes a wide range of uncertainties through scenario planning and ranges in future supply and demand within its service area.
MWD’s long-term water service reliability assessment performed for their UWMP shows that, under the UWMP planning assumptions, there would be sufficient supply and storage capabilities to meet projected demands from 2030-2050 (MWD, 2026). However, MWD acknowledges that their 2025 UWMP includes a single outcome approach and UWMP projections do not include the wider range of planning assumptions considered in their other planning documents, such as the 2020 IRP.
Building on MWD’s findings, WBMWD’s water service reliability assessment performed for their UWMP also shows that, under UWMP planning assumptions, there would be sufficient supply capabilities to meet projected demands from 2030-2050 (Water Systems Consulting, Inc, 2026).
6.2.1.4 Imported Water Quality
MWD’s 2025 UWMP considered water quality concerns for imported water supplies as well as local supplies, such as groundwater. While drought conditions and reduced SWP allocations have temporarily increased reliance on higher-salinity Colorado River water, Metropolitan Tuesday, June 16, 2026 Reg CC MTG, Page *503
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mitigates these impacts through blending and treatment upgrades. Based on the 2025 UWMP, MWD does not anticipate any significant reductions in imported water supply availability due to water quality concerns (MWD, 2026).
6.2.2 Groundwater
6.2.2.1 Groundwater Supplies
The city pumps groundwater from the West Coast Groundwater Basin. The West Coast Groundwater Basin is a subbasin of the Coastal Plain of Los Angeles County Groundwater Basin, as defined in DWR Bulletin 118 (Basin No. 4‑11.03). The basin underlies approximately 160 square miles of the southwestern Los Angeles Coastal Plain and is bounded by the Ballona Escarpment to the north, the Newport–Inglewood fault zone to the east, the Pacific Ocean to the west, and the Palos Verdes Hills and San Pedro Bay to the south. Major water‑bearing formations include the Holocene alluvial aquifers, the Gage aquifer of the Lakewood Formation, and the Silverado aquifer of the San Pedro Formation, which supplies approximately 80 to 90 percent of groundwater production and provides an estimated 6.5 million acre‑feet of total storage. Regional groundwater flows generally southward and westward toward the coast.
Groundwater conditions in the West Coast Groundwater Basin were historically impacted by overdraft and seawater intrusion resulting from heavy pumping during the early to mid‑20th century. In response, the basin was adjudicated by the Los Angeles County Superior Court, culminating in a final Judgment in 1961 and a supplemental Judgment in 1966, which together limit total basin production to 64,468.25 acre‑feet per year. The Judgment establishes quantified pumping rights for individual parties, allows limited carryover of unused rights, and provides mechanisms for water exchanges, transfers, and emergency pumping under defined conditions.
In 2014, the Court approved amendments to the Judgment that modernized basin governance, established adjudicated groundwater storage programs, and transferred Watermaster administrative responsibilities to the WRD. The Judgment also allows water users to carry over and extract any unused water rights, which originally was up to 10% of such unused water rights and up to 10% beyond their allowable pumping rights within a given year. As an adjudicated basin, the West Coast Groundwater Basin is exempt from the requirements of the Sustainable Groundwater Management Act. A copy of the West Coast Basin Amended Judgment is available electronically at https://rights.wrd.org/about/judgment_west_coast.
Natural recharge to the West Coast Basin is limited and occurs primarily through subsurface inflow from the Central Basin and minor infiltration of stormwater and applied irrigation water. To prevent seawater intrusion and manage ongoing overdraft conditions, WRD operates extensive artificial recharge programs, including the West Coast Basin Seawater Barrier and the Dominguez Gap Barrier, which inject imported and recycled water to maintain protective freshwater gradients along the coastline. WRD also administers in‑lieu replenishment and adjudicated storage programs to enhance regional water supply reliability. A map of the West Coast Groundwater Basin including the barrier locations is shown in Figure 6-6.
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Figure 6-6: West Coast Groundwater Basin Map
Lomita serves on the Budget Advisory Committee for WRD. This committee covers everything from capital projects to rate adjustments and is mandated by the State and authorized by the WRD Board of Directors. The WRD website has an overview of Budget Advisory Committee, which states the following: “The Budget Advisory Committee is an advisory body established to review replenishment assessments and the WRD’s annual operating budget, including reserve funds maintained by WRD.
Lomita has one well (Well No. 5) for groundwater extraction. The well has a depth of 660 feet and a capacity of 1,500 gallons per minute. Groundwater from Well No. 5 is treated at the Cypress Water Production Facility (CWPF), which is a greensand filtration treatment system designed to remove iron and manganese.
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6.2.2.2 Groundwater Reliability
Groundwater is a highly reliable supply because it is not immediately susceptible to changes in climate and surface flows. The Los Angeles County Department of Public Works owns and maintains the seawater barrier system and determines how much barrier injection water is required to protect the aquifer from seawater intrusion. WRD determines how much additional water is needed to replenish the West Coast Groundwater Basin to support pumping beyond the injection water needed for seawater intrusion protection.
In past years, when groundwater pumping exceeded recharge and replenishment, seawater intruded into the West Coast Groundwater Basin. Once the intrusion barrier projects were brought on-line, further intrusion was stopped, however a large plume of saline water has remained trapped within the West Coast Groundwater Basin. The groundwater supply projections have already considered the presence of the plume and therefore anticipate no change in supply reliability as a result of its existence. Overall, the current groundwater quality in the West Coast Groundwater Basin remains very good, with only some areas facing poor water quality from natural or anthropogenic sources that WRD continues to monitor closely to determine increasing or decreasing trends (WRD, 2024).
Lomita has a Hazard Mitigation Plan, an Emergency Operations Plan, and a WSCP in place to deal with the effects of a potential groundwater contamination that reduces supplies. This information is provided in Section 8.
6.2.2.3 Groundwater Quality
WRD maintains monitoring wells throughout the West Coast Groundwater Basin. These wells allow water quality and groundwater levels to be evaluated on an aquifer-specific basis.
Regional Groundwater Monitoring Reports are published by WRD for each water year. In general, groundwater is of good quality and suitable for use by the city. Groundwater from localized areas within the basin with marginal to poor water quality can still be utilized but may require treatment prior to being used as a potable source.
Since 1990, Well No. 5 has experienced high levels of iron, manganese, and hydrogen sulfide odors. Prior to the reactivation of Well No. 5 in 2013 for potable use, water from Well No. 5 was used only on an as-needed basis for fire flow demands or other emergencies.
Lomita recognized that significant and costly efforts needed to be taken to remediate the water quality issues. As part of Lomita's efforts to re-initiate its groundwater production, the city constructed a 5.3-million-gallon reservoir (Cypress Reservoir) adjacent to Well No. 5 for emergency storage and to improve fire-flow capacity. The tank's capacity is equal to about a two-day supply of water for Lomita. The new reservoir was a first step as part of the overall CWPF project.
In 2013, Lomita received approval to distribute blended water from CWPF. The city conducted significant testing, including odor, taste, and even dishwashing testing (for hardness). After passing such tests, Lomita was finally able to reactivate the well for potable use, and CWPF began operations.
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In the 2013 State of the City Address, the Mayor identified 3 key reasons for the city having its own dedicated source of water, including:
• It will help stabilize the city’s water rates by having fixed operational costs rather than being subject to imported water rate increases from the WBMWD. • Will allow the city to have a dedicated emergency water supply. • Reliability from an imported water source such as MWD is not guaranteed. In the future, it is quite possible that water from these sources to the entire Southern California region will be reduced. Utilizing groundwater locally will reduce the city’s reliance on this imported water source.
In 2019, the city detected benzene in the water produced from Well No. 5 and the well was shut down immediately and remained offline until 2025.
Shortly after Well No. 5 went offline, Lomita secured approval from the State Division of Drinking Water for treatment upgrades at the well site. The treatment upgrades at Well No. 5 include granular activated carbon, which will remove the benzene and improve the aesthetics of the water. WRD authorized the use of up to $2,000,000 in grant funds from its Safe Drinking Water Program, a program to assist local agencies in increasing their ability to produce water locally and improve drought resilience. With the partnership of the WRD, the project has resulted in the recommencement of groundwater pumping in late 2025 and the project is anticipated to be fully completed in 2026, helping to ensure the city can provide safe clean water to residents, even in times of severe drought.
Construction of the treatment system is expected to be finished in 2026 and a startup period where the city blends groundwater and imported water at a 60%/40% ratio, respectively, is anticipated. Production is expected to be fully online by 2028, and the city intends to pump their full adjudicated groundwater rights of 1,352 AFY in the future.
6.2.3 Surface Water
Lomita does not use surface water supplies to meet its water demands.
6.2.4 Stormwater
Lomita does not directly use stormwater to meet its water demands.
6.2.5 Wastewater and Recycled Water
Los Angeles County Sanitation Districts (LACSD) manages the wastewater collection and associated treatment system for Lomita’s service area. Municipal wastewater is from a combination of residential, commercial, and institutional sewer discharges. Lomita does not have any industrial sewer discharges (i.e., brine or other forms of waste). Sewage is collected from roughly 187,000 feet (35 miles) of local sewer mains and is then discharged into larger sewer trunk mains along Narbonne Avenue, Lomita Boulevard, and 250th Street which convey it approximately two miles to the A.K. Warren Water Resource Facility (AKWWRF), formerly the Joint Water Pollution Control Plant in Carson. The AKWWRF is operated by LACSD and Tuesday, June 16, 2026 Reg CC MTG, Page *507
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provides service to about 3.5 million people within the region, with a maximum design peak flow of 540 million gallons per day, and an average flow of 280 million gallons per day.
Neither LACSD or Lomita’s meter total wastewater flows. However, the quantities of wastewater generated are proportional to the population and the water use in Lomita’s water service area and have been estimated using available data. Estimated wastewater flows were calculated using category types in Lomita’s Urban Water Use Objective reporting and were estimated to be approximately 70 percent of the total water demand, or 1,337 AF in 2025.
Treated wastewater from the AKWWRF is discharged through two outfalls into the Pacific Ocean located about two miles offshore from White Point on the Palos Verdes Peninsula. The depth of the discharge point is approximately 200 feet below sea level. The AKWWRF system includes advanced primary treatment with 60 percent secondary treatment. Because all wastewater treated at the AKWWRF is currently discharged to the ocean, none of Lomita’s wastewater is treated to recycled water standards.
6.2.5.1 Recycled Water
Lomita neither produces recycled water itself nor uses recycled water produced by any other agencies within its service area.
6.2.5.2 Future Recycled Water Planning
WBMWD has operated the Edward C. Little Water Recycling Facility since 1995 which treats wastewater effluent from the City of Los Angeles’ Hyperion Water Reclamation Plant (WRP) to meet California Code of Regulations Title 22 disinfected tertiary recycled water standards, and a portion is treated to even higher quality levels for specific uses. The nearest recycled water pipeline from WBMWD is located at Charles Wilson Park in Torrance, off of Crenshaw Boulevard. This pipeline is about 2 miles away from Lomita’s nearest potential recycled water customer (Lomita Park). Construction and maintenance of a recycled water pipeline would not be cost-competitive compared to the city’s cost to produce and treat groundwater. No recycled water production and/or use for the current UWMP planning period (through 2050) is anticipated. As a member agency of WBMWD, the city supports the wholesaler’s efforts to identify potential recycled water demands and to expand the recycled water distribution system where feasible.
In addition, WBMWD’s service area is geographically located between two proposed large-scale advanced water treatment projects: Pure Water Southern California, and Pure Water Los Angeles. These projects, as proposed, have the potential to reshape recycled water use within the WBMWD service area, Southern California, and in the Southwest. WBMWD actively participates in discussions for both projects; however, ultimate decisions regarding the two projects are outside of WBMWD’s control. WBMWD remains committed to exploring all options and partnership opportunities to develop and maintain a diverse and resilient water supply portfolio to meet the needs of WBMWD’s communities and critical customers.
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6.2.6 Desalinated Water
Lomita is not currently exploring the possibility of using desalinated water as a water source independently. However, WBMWD tested the feasibility of a seawater desalination facility.
WBMWD began a stepwise program to explore the systematic development of an environmentally responsible ocean water desalination facility in 2001. WBMWD efforts exploring ocean desalination included a pilot study, demonstration facility, multiple technical studies, and the certification of the Environmental Impact Report for the Ocean Water Desalination Project.
In 2019, following certification of the Environmental Impact Report, the project entered an evaluation phase consistent with conditions established by the Board at that time. During this phase, WBMWD developed detailed financial estimates and analyses to inform subsequent decision‑making. In 2021, WBMWD released a cost‑benefit analysis evaluating implementation of the Project, including estimated costs, rate impacts, and affordability considerations. Based on the findings of the cost‑benefit analysis, as well as the anticipated ability of MWD to meet WBMWD’s demands under both normal and dry‑year conditions, the WBMWD Board of Directors voted in 2021 to terminate the proposed Ocean Water Desalination Project.
Emergent offshore desalination technologies are currently being tested. These technologies attempt to utilize the ocean’s water pressure to push seawater through membranes and pump purified water back to shore. This technology is currently being tested in a drinking water reservoir.
6.2.7 Water Exchanges and Transfers
Lomita does not currently participate in any water exchanges or transfers with other water agencies into or out of the city’s water service area. The city does own rights to extract 1,352 AF of groundwater annually, and periods of inactive groundwater production provides an opportunity to lease some or all of its groundwater rights to other agencies to offset some of the financial burdens of purchasing imported water. Likewise, the city could potentially lease additional groundwater rights from other agencies. However, no regular leases or other exchanges or transfers are planned.
6.2.8 Future Water Projects
Lomita continually evaluates operational and planning practices to ensure the provision of adequate and reliable water supplies. Trained staff oversee water quality and system performance to meet present and future demands in an environmentally and economically responsible manner. The city coordinates long‑term water shortage planning with WBMWD and WRD and participates in monthly meetings with West Basin Water Association to discuss regional water supply and operational issues. The city also participates in periodic meetings with the West Basin Water Rights Panel to address adjudicated rights within the West Coast Basin.
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6.2.9 Summary of Existing and Planned Sources of Water
Lomita’s water supply portfolio consists of groundwater extracted from the West Coast Basin and imported water purchased from WBMWD. Figure 6-7 and Table 6-1 show historic and projected water supply by type. Lomita anticipates having sufficient water supplies to meet projected demands through 2050.
Figure 6-7: Historic and Projected Water Supply
Table 6-1: Actual and Projected Water Supply (AFY)
Water Supply Additional Detail 2025 2030 2035 2040 2045 2050 Groundwater (not
desalinated)
from West Coast
Basin
14 1,352 1,352 1,352 1,352 1,352
Purchased or
Imported Water1
from WBMWD 1,897 611 658 700 744 788
Total 1,911 1,963 2,010 2,052 2,096 2,140
1 Imported water supplies shown in the table were set to equal the difference between projected demands and projected groundwater and recycled water supplies in each scenario. The city could access more imported water than shown if needed, as these projections are below historical use and WBMWD is expected to have sufficient supplies under normal, single-dry, and multiple-dry year conditions.
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6.3 Energy Intensity
The estimated energy use for water management processes in kilowatt-hours per acre-foot (kWh/AF) is summarized in Table 6-2. The unit energy data are from available energy use records and historic water production from March 2024 to February 2025.
Table 6-2: Energy Reporting - Total Utility Approach
Parameter Total Utility
Volume of Water Entering Process (AF) 1,894
Energy Consumed (kWh) 25,653
Energy Intensity (kWh/AF) 13.5
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7 Water Service Reliability and
Drought Risk Assessment
This section describes anticipated water service reliability through 2050. As required by the UWMP Act, the assessment must compare total projected water supply and demands over the next 20 years in five-year increments under normal, single dry water years, and multiple dry water years. This section also includes the drought risk assessment, which provides a snapshot of the anticipated surplus or deficit if a drought were to occur in the next five years.
IN THIS S ECTION
• Water Service Reliability
Assessment
• Drought Risk Assessment
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7.1 Introduction
Water service reliability is determined based on the security of water supply and water infrastructure security. The supply reliability assessment discusses factors (i.e., climatic, environmental, water quality and legal) that could potentially limit the expected quantity of water available from Lomita’s current and projected sources of supply through 2050. Multiple drought scenarios are considered and the quantitative impacts of the aforementioned factors on water supply and demand are discussed, as well as possible methods for addressing these issues.
Evaluating the water service reliability is critical for water management as it can help identify potential problems before they happen. Water managers can then take proactive steps to mitigate shortages by encouraging water use efficiency, securing new water supplies, and/or investing in infrastructure.
7.2 Water Service Reliability Assessment
Lomita’s 2025 UWMP water service reliability assessment compares total projected water supply and demands over the next 25 years in five-year increments under normal, single dry water year, and five-year consecutive dry period. The approach for the analysis and results is discussed in this section. Lomita’s 2025 UWMP water service reliability assessment and DRA results indicate that no water shortages are anticipated within the next 25-years under normal, single dry water years, and multiple dry water years.
7.2.1 Service Reliability – Year Type Characterization
In accordance with CWC Section 10635(a), every urban water supplier must provide their expected water service reliability for a normal year, single dry year, and five consecutive dry years for 2030, 2035, 2040, 2045, and optionally 2050. DWR defines these years as:
• Normal Year: This condition represents a single year or an averaged range of years that most closely represents the average water supply available. • Single Dry Year: The single dry year is recommended to be the year that represents the lowest water supply available.
• Five-Consecutive Year Drought: The driest five-year historical sequence for the supplier, which may be the lowest average water supply available for five years in a row.
For imported water, the basis of water year data and the supply availability during each year type was based on MWD’s 2025 UWMP. Groundwater is projected to be 100% reliable in every year type.
7.2.2 Service Reliability - Constraints on Water Sources Southern California’s water supply is subject to natural and man-made forces ranging from drought and earthquakes to environmental regulations and water rights determinations. In addition, climate change is expected to exacerbate these challenges and potentially introduce Tuesday, June 16, 2026 Reg CC MTG, Page *513
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new ones. Some of the challenges facing Southern California, including Lomita, with respect to water include:
• A major earthquake could damage levees within the Delta, the California Aqueduct, and/or the Colorado River Aqueduct, interrupting water supply to the region for many months, if not years.
• Environmental water demands are increasing, especially in the Delta, thus reducing the availability of water for other uses within California. • California, like much of the west, is susceptible to long periods of drought. • Recent studies indicate that Delta and Colorado River supplies will be even more variable than that of the historical record, further stressing California water supplies. • Many groundwater basins are in an overdraft condition.
Locally, imported water is constrained by the availability of surface water from the SWP, Colorado River Aqueduct and other sources at the WBMWD’s disposal. Lomita purchases wholesale distributed water from WBMWD which is provided by MWD.
Groundwater is constrained by the availability of water replenished to WRD. The West Coast Groundwater Basin is managed by WRD. The basin is reliant on recycled water, imported water, and natural runoff captured in the regional spreading grounds for replenishment. Each of these sources has its own constraints; however, WRD’s diversified supply portfolio tends to reduce those constraints.
The imported supply reliability for the city is dependent upon the supply reliability of WBMWD and the West Coast Groundwater Basin. The WBMWD 2025 UWMP describes that WBMWD’s water supplies are sufficient to meet projected demands under a normal, single-dry year, and five consecutive year drought (Water Systems Consulting, Inc, 2026). Similarly, the city’s groundwater rights are assumed to be available under normal, single-dry, and multiple dry years and would only be constrained by the city’s facilities to pump the groundwater. The city’s capacity to pump groundwater is expected to increase in 2026 upon completion of the GAC treatment project, as described in Section 6.2.2. Short-term supply constraints are discussed in detail in the WSCP.
7.2.3 Water Service Reliability – Supply and Demand Comparison Results of the water supply and demand analysis for normal, single dry, and five-year consecutive drought are shown below. Projected supplies were described in Section 6 and summarized in Table 6-1. Projected demand was described in Section 4 and summarized in Table 4-3.
The city expects to have sufficient supplies to meet demands under all water year scenarios based on WBMWD’s 2025 projections. Note that imported water supplies were set to equal the difference between projected demands and projected groundwater and recycled water supplies in each scenario. The city remains committed to continuing water conservation efforts to ensure reliability and resiliency in the future.
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Table 7-1 provides an assessment of projected normal year supply reliability.
Table 7-1: Normal Year Supply and Demand Assessment (AFY) Supplies 2030 2035 2040 2045 2050
Groundwater 1,352 1,352 1,352 1,352 1,352
Imported Water1 611 658 700 744 788
Total Supply 1,963 2,010 2,052 2,096 2,140
Total Demand 1,963 2,010 2,052 2,096 2,140
Difference 0 0 0 0 0
1 Imported water supplies shown in the table were set to equal the difference between projected demands and projected groundwater and recycled water supplies in each scenario. The city could access more imported water than shown if needed, as these projections are below historical use and WBMWD is expected to have sufficient supplies under normal, single-dry, and multiple-dry year conditions.
Figure 7-1: Normal Year Supply and Demand Assessment (AFY) Table 7-2 provides an assessment of projected single dry year supply reliability.
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Table 7-2: Single Dry Year Supply and Demand Assessment (AFY) Supplies 2030 2035 2040 2045 2050
Groundwater 1,352 1,352 1,352 1,352 1,352
Imported Water1 611 658 700 744 788
Total Supply 1,963 2,010 2,052 2,096 2,140
Total Demand 1,963 2,010 2,052 2,096 2,140
Difference 0 0 0 0 0
1 Imported water supplies shown in the table were set to equal the difference between projected demands and projected groundwater and recycled water supplies in each scenario. The city could access more imported water than shown if needed, as these projections are below historical use and WBMWD is expected to have sufficient supplies under normal, single-dry, and multiple-dry year conditions.
Table 7-3 provides an assessment of projected five consecutive dry years supply reliability.
Table 7-3: Multiple Dry Year Supply and Demand Comparison (AFY) 2030 2035 2040 2045 2050
First
Year
Supply Totals 1,963 2,010 2,052 2,096 2,140
Demand Totals 1,963 2,010 2,052 2,096 2,140
Difference: 0 0 0 0 0
Second
Year
Supply Totals 1,973 2,019 2,061 2,104 2,140
Demand Totals 1,973 2,019 2,061 2,104 2,140
Difference: 0 0 0 0 0
Third
Year
Supply Totals 1,982 2,027 2,070 2,113 2,140
Demand Totals 1,982 2,027 2,070 2,113 2,140
Difference: 0 0 0 0 0
Fourth
Year
Supply Totals 1,991 2,036 2,078 2,122 2,140
Demand Totals 1,991 2,036 2,078 2,122 2,140
Difference: 0 0 0 0 0
Fifth
Year
Supply Totals 2,001 2,044 2,087 2,131 2,140
Demand Totals 2,001 2,044 2,087 2,131 2,140
Difference: 0 0 0 0 0
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7.2.4 Description of Management Tools and Options
Since a significant portion of the city’s water supply is provided by WBMWD, which in turn is provided through MWD, the reliability analysis is heavily dependent on the reliability analyses of these agencies. Lomita is dependent on these sources to provide a reliable water supply and works with WBMWD to ensure water reliability in the future. The city will continue to work with WBMWD to implement any necessary improvements to ensure a reliable, high quality water source.
WBMWD, MWD, and DWR are implementing several water supply strategies to ensure that sufficient supply is available in drought conditions. These strategies include investments in conservation, water recycling, transfer agreements, storage, and supply. Based on these investments, MWD, and WBMWD anticipate that there will be sufficient supply available to meet forecasted demands as described in the WBMWD 2025 UWMP (Water Systems Consulting, Inc, 2026).
In addition, the city has invested in restoring its groundwater production capacity to produce up to its groundwater rights so the city can maximize use of local supplies and reduce its reliance on imported water.
7.3 Drought Risk Assessment
CWC Section 10635 (b) requires a drought risk assessment (DRA). The DRA provides a quick snapshot of the anticipated surplus or deficit if a five consecutive year drought were to occur in the next five years. The DRA can be modified or updated outside of the UWMP five-year plan cycle, so a description of the data, methodology, and basis for shortage conditions must be included in this 2025 UWMP. The DRA evaluates each water supply’s reliability and compares available water supplies and projected demands during a five consecutive dry years scenario.
This short-term analysis can help water suppliers foresee undesired risks, such as upcoming shortages, and provide time to evaluate and implement the necessary response actions needed to mitigate shortages in a less impactful manner to the community and environment.
The DRA builds on the water service reliability analysis from Section 7.2 which projected sufficient supply to meet future demands. For this DRA analysis, normal year demand conditions and five consecutive year drought supply conditions were considered for 2026-2030.
Once the GAC treatment project is completed, Lomita is expected to have sufficient extraction and treatment capacity to reliably pump up to its full adjudicated right of 1,352 AFY.
Construction is expected to be finished in 2026 and a startup period where the city blends groundwater and imported water at a 60%/40% ratio, respectively, is anticipated. Production is expected to increase to maximum capacity by 2028.
As discussed above, WBMWD and MWD anticipate having sufficient supply available to meet forecasted demands. No constraints on imported water are anticipated. Demand projection for the next five years is estimated to be a linear trend from 2025 to 2030 projected demands, the Tuesday, June 16, 2026 Reg CC MTG, Page *517
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assumptions and methods for which were described in Section 4.2. Lomita does not anticipate any supply shortages within the next five years, as shown in Figure 7-2.
Figure 7-2: Drought Risk Assessment
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8 Water Shortage Contingency Plan
The Water Shortage Contingency Plan (WSCP) is a detailed plan for how Lomita intends to act in the case of an actual water shortage condition. This allows for management of a shortage with predictability and accountability. This section provides an overview of the contents of Lomita’s WSCP. The standalone WSCP is included in Appendix C.
IN THIS S ECTION
• Overview of WSCP Components
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8.1 Introduction
CWC Section 10632 requires that every urban water supplier shall prepare and adopt a standalone WSCP as part of its UWMP. Lomita’s WSCP is included as Appendix C and will be separately submitted to DWR. The WSCP is developed independently of Lomita’s 2025 UWMP and can be amended, as needed, without amending the UWMP.
The WSCP is a strategic plan that Lomita uses to prepare for and respond to foreseeable and unforeseeable water shortages. A water shortage occurs when the water supply available is insufficient to meet the normally expected customer water use at a given point in time. A shortage may occur due to a number of reasons, such as water supply quality changes, climate change, drought, regional power outage, and catastrophic events (e.g., earthquake).
Additionally, the State may declare a statewide drought emergency and mandate that water suppliers reduce demands, as occurred in 2014. The WSCP serves as the operating manual that Lomita will use to prevent catastrophic service disruptions through proactive, rather than reactive, mitigation of water shortages.
The WSCP provides a process for an annual water supply and demand assessment and structured steps designed to respond to actual conditions. This level of detailed planning and preparation provides accountability and predictability and will help Lomita maintain reliable supplies and reduce the impacts of any supply shortages and/or interruptions.
The WSCP must be updated based on new requirements every five years and will be adopted as a current update for submission to DWR.
8.2 Overview of WSCP Components
The Water Code establishes several prescriptive elements that must be included in a retail water supplier’s WSCP. Each element and its location within the WSCP is described below.
Water Supply Reliability Analysis: Summarizes Lomita’s water supply analysis and reliability and identifies any key issues that may trigger a shortage condition.
Annual Water Supply and Demand Assessment Procedures: Describes the key data inputs, evaluation criteria, and methodology for assessing the system’s reliability for the coming year and the steps to formally declare any water shortage levels and response actions.
Shortage Stages: Establishes water shortage levels to clearly identify and prepare for shortages.
Shortage Response Actions: Describes the response actions that may be implemented or considered for each stage to reduce gaps between supply and demand.
Communication Protocols: Describes communication protocols under each stage to ensure customers, the public, and government agencies are informed of shortage conditions and requirements.
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Compliance and Enforcement: Defines compliance and enforcement actions available to administer demand reductions.
Legal Authorities: Lists the legal documents that grant Lomita the authority to declare a water shortage and implement and enforce response actions.
Financial Consequences of WSCP Activation: Describes the anticipated financial impact of implementing water shortage stages and identifies mitigation strategies to offset financial burdens.
Monitoring and Reporting: Summarizes the monitoring and reporting techniques to evaluate the effectiveness of shortage response actions and overall WSCP implementation. Results are used to determine if additional shortage response actions should be activated or if efforts are successful and response actions should be reduced.
WSCP Refinement Procedures: Describes the factors that may trigger updates to the WSCP and outlines how to complete an update.
Special Water Feature Distinctions: Identifies exemptions for decorative features aside from pools and spas.
Plan Adoption, Submittal, and Availability: Describes the process for the WSCP adoption, submittal, and availability after each revision.
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9 Demand Management Measures
This section describes Lomita’s efforts to promote water use efficiency, reduce demand on the water supply, and prepare for future requirements.
IN THIS S ECTION
• Existing Demand Management
• Additional Conservation
• Reporting Implementation
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9.1 Introduction
This section outlines Lomita’s water conservation efforts over the past five years, current initiatives, and future plans to meet State efficiency standards from DWR.
There are seven required DMM categories:
• Water waste prevention ordinances
• Metering
• Conservation pricing
• Public education and outreach
• Programs to assess and manage distribution system real loss • Water conservation program coordination and staffing support • Other DMMs
Lomita acknowledges that efficient water use is the foundation of its current and future water planning and operations policies. Lomita implements water conservation through a combination of programs, resources, and policies.
9.2 Existing Demand Management Measures
As a member of WBMWD, Lomita benefits from regional conservation programs offered by WBMWD on behalf of its member agencies. Since 2016, WBMWD has collaborated to distribute nearly $10 million in water-saving incentives including the removal of 4 million square feet of grass and the distribution of over 18,000 rain barrels. As a smaller, mostly residential community, Lomita is unique compared to other, larger cities in the region. Lomita’s conservation efforts are tailored to address the characteristics of the specific community. This section presents a description of the DMM activities implemented in coordination with WBMWD.
9.2.1 Water Waste Prevention Ordinances
City Ordinance No. 481 was adopted by the City Council in 1991, prohibiting the waste of water.
The ordinance was codified into Lomita Municipal Code (Section 12-4.01). This section of the code describes actions that are considered a waste of water. The code enforces the prohibition of water waste under penalty of law ($1,000) in accordance with Title 1, Section 2, if a 2nd violation were to occur.
Similar to water waste prohibitions, Assembly Bill No. 1881 was passed in 2006, requiring local agencies, beginning January 1, 2010, to adopt a model water efficiency landscape ordinance that is at least as effective as the State's model water efficiency landscape ordinance. The City Council adopted Ordinance No. 728 on January 26, 2010 to meet this requirement.
The city updated Section 12-4.01 of the city code to include new prohibitions on water use, depending on drought severity. This pertains to updates to CA Water Code § 10632(a)(3), which was amended by Senate Bill 606 in 2019.
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9.2.2 Metering
All of the city’s water service connections are metered for all customer sectors. The city bills its customers according to meter consumption. In addition, Lomita encourages the installation of dedicated landscape meters, which enables the city to track irrigation water consumption for future landscape programs. Meter calibration and periodic replacement ensures that customers are paying for all of the water they consume and therefore encourages conservation. The city will continue to meter all new water service connections.
In recent years, the city transitioned to drive-by Neptune® Automatic Meter Read (AMR) system that allows the city to monitor each individual customer account for water conservation. Lomita’s AMR system readings also show the functionality of the meters, which allows the city to determine when the meters need to be changed out.
Although the AMR system meets the city’s needs, a fixed-base automatic metering infrastructure system could be helpful for Lomita during a prolonged water shortage. That is, instead of picking up meter readings from a city vehicle and then downloading the readings after returning to the office, the city can obtain meter readings from a remote location.
The fixed system involves placing antennas throughout the city that would collect data from the water meters at set intervals. The data would then be downloaded to the city’s system and transferred to a desktop computer. The data is computed for individual users for billing purposes or for alerting the city if a set water use threshold has been exceeded, signaling a possible leak on the property. If this condition arises, the owner of the property would be notified by either email or phone call.
9.2.3 Conservation Pricing
A new rate structure was established as part of a Water Rate Study that was conducted in 2022.
In the study, the city evaluated its existing water rate structure and assessed its ability to support projected revenue needs, policy objectives, and the requirements of Proposition 218, which mandates that rates reflect the cost of providing service. As part of this evaluation, alternative tiered rate structures were analyzed and are recommended to promote responsible water use and support the city’s long-term conservation goals. The city has a three-tiered increasing rate structure that applies to all customers. The city’s current and projected water rates are shown in Table 9-1.
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Table 9-1: Lomita’s Current Water Rates
Bi-Monthly Base Charge
Meter Size FY25-26 FY26-27
5/8-inch $65.00 $69.23
3/4-inch $65.00 $69.23
3/4 x 1-inch $85.15 $90.68
1-inch $105.49 $112.35
1.5-inch $205.81 $219.18
2-inch $326.67 $347.90
3-inch $649.37 $691.57
4-inch $1,011.95 $1,077.73
Volume Rate ($/CCF) - Residential
Usage Range
0-20 CCF $6.07 $6.47
20-35 CCF $6.38 $6.79
>35 CCF $8.06 $8.59
Volume Rate ($/CCF) - Commercial
Usage Range
>0 CCF $6.40 $6.82
Fire Bi-Monthly Charge
Meter Size
4-inch $274.94 $292.81
6-inch $549.88 $585.63
8-inch $879.81 $937
9.2.4 Public Education and Outreach
Through WBMWD, the city provides educational programs to grades 3 through 12 on water awareness and conservation. The city will continue to promote and coordinate with WBMWD to provide water education programs with the schools. As of 2026, the current programs include:
• Water for Tomorrow Campaign: The Water for Tomorrow campaign serves as the foundation of WBMWD’s public information and education strategy, guiding annual outreach efforts focused on protecting existing water supplies, diversifying and augmenting the water portfolio, and innovating to prepare for future water reliability challenges.
• WBMWD Public Information and Education Programs: WBMWD conducts public information and education activities to inform residents and businesses about regional water supply issues, communicate the value of District programs, and encourage water conservation and efficient water use.
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• WBMWD Newsletter: WBMWD distributes a quarterly electronic newsletter to community leaders and residents that shares information on conservation programs, recycled water projects, education efforts, and District activities.
• Media Relations: WBMWD engages local media through press releases, facility tours, briefings, and events to communicate information about its water supply, conservation, and water recycling activities, particularly during drought and water shortage conditions. • Social Media and Website: WBMWD uses its website and social media platforms to provide timely information, promote District programs, and engage the public on topics related to water supply, conservation, and water reliability. • Speakers Bureau: Through its Speakers Bureau, WBMWD delivers presentations to community, business, and government groups on regional water challenges, conservation programs, and District water reliability initiatives. • Imported Water Supply Tours: WBMWD partners with MWD to offer tours of imported water facilities, providing participants with insight into regional water supply systems and related challenges.
• Water Harvest Festival: The annual Water Harvest Festival is a free, family‑friendly event that offers hands‑on activities, informational booths, and facility tours to educate the public about water conservation, recycling, and water management. • Community Outreach and Sponsored Events: WBMWD participates in and sponsors community events throughout its service area, where staff share educational materials, answer questions, and raise awareness of conservation programs and local water supply conditions.
• Water Recycling Tours: WBMWD provides regularly scheduled and special‑request tours of the Edward C. Little Water Recycling Facility to explain the recycled water treatment process and its role in supporting regional water supplies. • Water Education Classes: WBMWD offers free public water education classes, including Know Your H2O courses, landscape classes, and firescaping workshops, which provide information on water issues, conservation practices, and water‑efficient landscaping. • School Education Programs: WBMWD provides free, grade‑appropriate water education programs for elementary through high school students within its service area, with instruction focused on water supply sources, conservation, and environmental topics aligned with California’s Next Generation Science Standards.
9.2.5 Programs to Assess and Manage Distribution System Real Losses The city’s surveillance of its water system to detect leaks is an on-going operation. The city recognizes the urgency of repairing leaks and responds to any leak in an expedient manner.
Field employees are trained in detection of leaks and signs of unauthorized uses of water. In addition, the customer billing system flags high or unusual water bills, which are then investigated for possible leaks in customer piping. When a leak is first noticed, the pipeline is inspected and promptly repaired.
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The city has prepared water audits since the 2020 UWMP. The audits were prepared in accordance with CWC Section 10631(d)(3)(B), using methods and a worksheet developed by the American Water Works Association (AWWA). The AWWA audit worksheets require a detailed approach to separate apparent water losses from overall water loss totals to reveal the actual “Real Losses” as well as the “Non- Revenue Water.” The AWWA audit defines the following:
• Water Losses: Water supplied minus authorized (metered) consumption. • Apparent Losses: Unauthorized or un- metered consumption and inaccuracies or errors. • Real Losses: Water losses minus apparent losses. The actual volume of water lost through leaks, breaks, etc.
• Non-Revenue Water: Real water losses plus apparent losses plus unbilled metered and unbilled unmetered consumption
The results of the last few audits and calculations indicate that the city has made improvements in testing, repairs, and record keeping. In addition, the city has recently replaced older, leaky water mains. Lomita has also purchased a meter test bench to enable the city to test meters inhouse.
9.2.6 Water Conservation Program Coordination and Staffing Support
The city’s Water Department Staff collectively serve as the city’s Conservation Coordinator. The role of the Water Department entails consistent water code enforcement and regular communication with customers on water conservation. In addition to collective water conservation efforts, the city’s Water Systems Superintendent has water conservation coordinator duties since the Water Systems Superintendent interacts with WBMWD on a regular basis. WBMWD has assigned a Conservation Coordinator to work with its member agencies, including the city, to enhance their conservation efforts. WBMWD’s Conservation Coordinator also investigates Federal, State, and local funding to develop new programs throughout its service area. The associated costs for the city on this DMM are approximately $2,700 per month.
9.2.7 Other Demand Management Measures
In addition to the Conservation Measures listed above, the city also maintains the following conservation programs:
• Rain Barrel Program: WBMWD’s Rain Barrel Program provides free rain barrels to residents throughout its service area to support rainwater capture and reuse for outdoor irrigation. Between 2020 and 2025, the program included both home delivery and in‑person distribution events and resulted in the distribution of approximately 9,000 rain barrels.
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water‑efficient landscapes. The program also assists participants in meeting design requirements for the regional Turf Replacement Rebate Program. • Turf Replacement Rebate Program: The Turf Replacement Rebate Program provides financial incentives for the removal of turf grass and conversion to water‑efficient landscapes, including upgrades to irrigation systems and runoff reduction features.
Participants may also receive tree rebates as part of qualifying turf replacement projects. • Free Parkway Beautification Program: WBMWD’s Free Parkway Beautification Program is a pilot initiative that provides fully funded water‑efficient parkway landscapes for low‑income residents in underserved disadvantaged communities. Implemented in partnership with MWD using MAAP funding, the program constructed 35 parkways during 2024 and 2025.
• YourSmartYard Program: The YourSmartYard Program is a joint conservation initiative developed with Las Virgenes Municipal Water District and Los Angeles County Waterworks District No. 29 that offers water‑saving measures, including discounted landscape designs. The program supports customer participation in turf replacement and other regional conservation incentives.
• Discounted Native Plant Kits: WBMWD partnered with TreePeople and regional agencies to offer discounted native plant kits to residents in Malibu and Topanga.
Through this effort, pre‑purchased kits were distributed to support drought‑tolerant landscaping and outdoor water efficiency.
• Free Classes, Workshops, and Chats: WBMWD provides free educational classes and workshops on topics such as firescaping and water‑efficient landscaping, along with short informational chats focused on rebate application assistance. These offerings support public awareness and participation in water conservation programs. • Device Rebates: Through MWD’s rebate programs, supported by WBMWD and local retailers, customers received financial incentives to install water‑efficient devices such as irrigation controllers, high‑efficiency appliances, and indoor plumbing fixtures. Rebate activity between 2020 and 2025 is documented using SoCalWaterSmart data.
9.3 Additional Conservation
In addition, WBMWD collaborates with MWD on its SoCal Water$mart program, which is a rebate program for residential and commercial properties. The rebates offered from Water$mart:
• High-Efficiency Clothes Washer
• Premium High-Efficiency Toilet
• Weather-Based Irrigation Controllers
• Rotating Nozzle Rebate
• Rain Barrels & Cisterns
• Soil Moisture Sensor System
• Turf Removal
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WBMWD also offers a few additional rebates (including urinals, valves, ice machines) to customers through its member agencies.
In addition to the DMMs described above, Lomita posts water conservation tips and other information on its website, www.lomitawater.com. The city provides additional conservation information and answers questions from its customers upon request. The city has developed an online contact form for customer use in reporting leaks, overwatering, and other misuse of water.
9.4 Reporting Implementation
As documented in the city’s 2020 UWMP and in Section 5, the city met its SB X7-7 target and has continued to advance water conservation efforts since that time. Participation metrics associated with these efforts are included in the aggregate totals reported in WBMWD’s 2025 UWMP. The city will be working over the coming years to tailor its water conservation efforts and implement measures necessary to meet its UWUO to comply with the CWOL Regulation as performance standards become increasingly more stringent.
The city aims to continue outreach and support for implementing future demand management measures. As stated in previous sections, WBMWD provides ample support for water conservation efforts.
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10 Plan Adoption, Submittal, and
Implementation
This section describes the completed steps taken to make the UWMP publicly available as well as adopt and submit the UWMP in accordance with the Water Code.
IN THIS S ECTION
• Completed Steps for UWMP and
WSCP
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10.1 Completed Steps for UWMP and WSCP
The 2025 UWMP and WSCP were made available for public review in May 2026 and a public hearing was held on June 16, 2026, at the City Council meeting to receive public input on the draft documents. Per Government Code 6066, the public hearing was noticed in the Daily Breeze newspaper on May 30, 2026 and noticed again on June 6, 2026. Additionally, the city issued a notice to Los Angeles County and other stakeholders more than 60 days prior to the public hearing. All notice documentation is included in Appendix E.
The Lomita City Council adopted the Final 2025 UWMP and the WSCP at a public meeting on June 16, 2026. A copy of the resolution of adoption is included in Appendix F.
This UWMP was submitted to DWR through the WUEData portal before the deadline of July 1, 2026, and will be available to the public on the City’s website.
If the city identifies the need to amend this UWMP or WSCP, it will follow the same procedures used previously for notification to cities, counties, and the public and for initial adoption.
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References
City of Lomita. (2018). City of Lomita Climate Action Plan. South Bay Cities COG. Retrieved from https://cdn.southbaycities.org/sites/default/files/LOMITA%20CAP.pdf City of Lomita. (2024). General Plan 2024-2025. City of Lomita.
Dudek. (2022). Water Master Plan Summary Report. City of Lomita.
DWR. (2016). Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use.
DWR. (2018). Making Water Conservation a California Way of Life.
DWR. (2025, October 23). Retrieved from California Irrigation Management Information System (CIMIS): https://cimis.water.ca.gov/Stations.aspx
DWR. (2025). The State Water Project Draft Delivery Capability Report 2025.
DWR. (2026). Urban Water Management Plan Guidebook.
KEC Engineers, Inc. (2015). City of Lomita Water Master Plan. City of Lomita.
MWD. (2025). Seismic Resilience Report. Retrieved from
https://d1q0afiq12ywwq.cloudfront.net/media/0qfhrls0/att1-09092025-srs-2025-updatefinal-report_report-no-2025-mwd08-01s1.pdf MWD. (2026). Draft 2025 Urban Water Management Plan.
U.S. Department of Housing and Urban Development. (2025). Comprehensive Housing Affordability Strategy 2018-2022 Data for Lomita. Retrieved March 10, 2026, from https://www.huduser.gov/portal/datasets/cp.html
Water Systems Consulting, Inc. (2026). Draft 2025 Urban Water Management Plan. West Basin Municipal Water District.
WBMWD. (2026). Draft 2025 Urban Water Management Plan.
West & Associates Engineering, Inc. (2022). 2020 Urban Water Management Plan. City of Lomita.
WRD. (2024). Regional Groundwater Monitoring Report WY 2023-2024. WRD.
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Appendix A UWMP Checklist
A
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2025 Guidebook
Location
Water Code
Section Summary as Applies to UWMP 2025 UWMP Location
Chapter 1 10615 A plan shall describe and evaluate sources of supply, reasonable and practical efficient uses, reclamation and demand management activities. Section 1.3
Chapter 1 10630.5
Each plan shall include a simple description of the Supplier’s plan including water availability, future requirements, a strategy for meeting needs, and other pertinent information. Additionally, a Supplier may also choose to include a simple description at the beginning of each chapter.
Section 1.3 and Chapter Intros
Section 2.1 10620(b) Every person that becomes a Supplier shall adopt UWMP within one year after it has become a Supplier. n/a Section 2.5 10644 Supplier shall report the Public Water Systems number, volume of delivered water, and number of connections that are included in this UWMP. Section 2.1 & Appendix B Section 2.5 10644 Supplier shall report if this UWMP is an individual UWMP and whether the Supplier belongs to a regional UWMP or regional alliance. Section 2.2
Section 2.5 10644 Supplier shall report whether the data is in fiscal or calendar years and the units of measure used for reporting water volumes. Section 2.1
Section 2.4 10642
Provide supporting documentation that the Supplier has encouraged active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of the plan and contingency plan.
Section 2.3
Section 2.4.2 10620(d)(3)
Coordinate the preparation of its plan with other appropriate agencies in the area, including other Suppliers that share a common source, water management agencies, and relevant public agencies, to the extent practicable.
Section 2.3
Section 2.4.1 10631(h) Retail Suppliers will include documentation that they have provided their Wholesale Supplier(s)—if any—with water use projections from that source. Section 2.3 Section 2.4.1 10631(h)
Wholesale Suppliers will provide their Suppliers with identification and quantification of the existing and planned sources of water available from the Wholesale Supplier to the Supplier during various water year types.
n/a
Chapter 3.0 10631(a) Describe the Supplier service area. Chapter 3 Section 3.3 10631(a) Describe the climate of the Supplier’s service area. Section 3.3 Section 3.4.1 10631(a) Provide the current and projected service area populations for 2030, 2035, 2040, 2045 and optionally 2050. Section 3.4
Section 3.4.2 10631(a) Describe other social, economic, and demographic factors affecting the Supplier’s water management planning. Section 3.4
Section 3.5 10631(a)
Describe the land uses within the service area… include the current and projected land uses within the existing or anticipated service area affecting the Supplier’s water management planning. Describe the land uses within the service area.
Section 3.5
Sections 4.2.3 and 4.2.4 10631(d)(1) Quantify past, current, and projected water use, identifying the uses among water use sectors. Section 4.1 Section 4.3.1 10631(d)(3)(A) Report the distribution system water loss for each of the five years preceding the plan update. Section 4.1.2 Section 4.3.2 10631(d)(3)(C) Retail Suppliers shall provide data to show the distribution loss standards were met. Appendix B Section 4.2.5.4 10631.1(a) Include projected water use needed for lower income housing projected in the service area of the Supplier. Section 4.2
Section 4.2.5.3 10631(d)(4)(A) In projected water use, include estimates of water savings from adopted codes, plans, and other policies or laws. Section 4.1.3
Section 4.2.5.3 10631(d)(4)(B) Provide citations of codes, standards, ordinances, or plans used to make water use projections. Section 4.1.3 Section 4.2.5.3 10631(d)(4)(B)(ii)
To the extent that a Supplier reports the information described in subparagraph (A), an urban water Supplier shall… Indicate the extent that the water use projections consider savings from codes, standards, ordinances, or transportation and land use plans. Water use projections that do not account for these water savings shall be noted of that fact.
Section 4.1.3
Section 4.2.5.6 10635(b) Demands under climate change considerations must be included as part of the drought risk assessment. Section 4.3 Tuesday, June 16, 2026 Reg CC MTG, Page *534
Section 5.1 10608.36 Wholesale Suppliers shall include an assessment of present and proposed future measures, programs, and policies to help their Retail Suppliers achieve targeted water use reductions. n/a Section 5.2 10608.4
Retail Suppliers shall report on their compliance in meeting their water use targets. Reporting requirements will vary depending on whether the Supplier:
- Was considered an urban retail water supplier in 2020, - Met its 2020 target in 2020, or
- Was part of a merger or consolidation since 2020.
Chapter 5 Subsections 5.2.1, 5.2.2, and 5.2.3 address each of these situations.
Section 5
Section 6.1 10631(b)(2) When multiple sources of water supply are identified, describe the management of each supply in relationship to other identified supplies. Section 6.1
Sections 6.1 and 6.2 10631(b)(1)
Provide a discussion of anticipated supply availability under a normal, single dry year, and a drought lasting five years, as well as more frequent and severe periods of drought, including changes in supply due to climate change.
Section 6.2
Section 6.2.2 10631(b)(4)(C)
Indicate whether groundwater is an existing or planned source of water available to the Supplier. If groundwater is identified as an existing or planned source of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years.
Section 6.2.2
Section 6.2.2 10631(b)(4)(A)
Indicate whether a groundwater sustainability plan or groundwater management plan has been adopted by the Supplier or if there is any other specific authorization for groundwater management. Include a copy of the plan or authorization.
n/a
Section 6.2.2 10631(b)(4)(B) Describe the groundwater basin. Section 6.2.2 Section 6.2.2 10631(b)(4)(B) Indicate if the basin has been adjudicated and include a copy of the court order or decree and a description of the amount of water the Supplier has the legal right to pump. Section 6.2.2.1 Section 6.2.2 10631(b)(4)(B) For unadjudicated basins… (include) information as to whether DWR has identified the basin as a high- or medium-priority basin in the most current official departmental bulletin… n/a Section 6.2.2 10631(b)(4)(B) For unadjudicated basins… describe efforts by the Supplier to coordinate with sustainability or groundwater agencies to achieve sustainable groundwater conditions. n/a Section 6.2.2. 10631(b)(4)(C)
If groundwater is identified as an existing or planned source of water… (include) a detailed description and analysis of the location, amount and sufficiency of groundwater pumped by the Supplier for the past five years.
Section 6.2.2
Section 6.2.2 10631(b)(4)(D) Provide a detailed description and analysis of the amount and location of groundwater that is projected to be pumped. Section 6.2.2 & Section 6.2.9
Section 6.1 10631(b) Identify and quantify the existing and planned sources of water available for 2025, 2030, 2035, 2040, 2045 and optionally 2050. Section 6.2.9
Section 6.2.7 10631(c) Describe the opportunities for exchanges or transfers of water on a short-term or long-term basis. Section 6.2.7 Section 6.2.5 10633(a) Describe the wastewater collection and treatment systems in the Supplier’s service area with quantified amount of collection and treatment and the disposal methods. Section 6.2.5 Section 6.2.5 10633(b) Describe the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project. Section 6.2.5 Section 6.2.5 10633(c) Describe the recycled water currently being used in the Supplier's service area. Section 6.2.5 Section 6.2.5 10633(d) Describe and quantify the potential uses of recycled water and provide a determination of the technical and economic feasibility of those uses. Section 6.2.5.2 Section 6.2.5 10633(e) Describe the projected use of recycled water within the Supplier's service area at the end of 5, 10, 15, and 20 years, and describe the actual use of recycled water in comparison to uses previously projected. Section 6.2.5.2 Section 6.2.5 10633(f) Describe the actions that may be taken to encourage the use of recycled water and the projected results of these actions in terms of acre-feet of recycled water used per year. Section 6.2.5.2 Section 6.2.5 10633(g) Provide a plan for optimizing the use of recycled water in the Supplier's service area. Section 6.2.5.2 Tuesday, June 16, 2026 Reg CC MTG, Page *535
Section 6.2.6 10631(g) Describe desalinated water project opportunities for long-term supply. Section 6.2.6 Section 6.2.10 10631(f)
Describe the expected future water supply projects and programs that may be undertaken by the water Supplier to address water supply reliability in average, single-dry, and for a period of drought lasting five consecutive water years.
Section 6.2.8
Section 6.3 and
Appendix O 10631.2(a) The UWMP must include energy information, as stated in the code, that a Supplier can readily obtain. Section 6.3 Section 7.1 10634 Provide information on the quality of existing sources of water available to the Supplier and the manner in which water quality affects water management strategies and supply reliability. Section 6.2.1, 6.2.2, 7.1 Section 7.2 10635(a)
Service Reliability Assessment: Assess the water supply reliability during normal, dry, and a drought lasting five consecutive water years by comparing the total water supply sources available to the Supplier with the total projected water use over the next 20 years.
Section 7.2
Section 7.2.3 10620(f) Describe water management tools and options to maximize resources and minimize the need to import water from other regions. Section 7.2.4
Section 7.3 10635(b) Provide a drought risk assessment as part of information considered in developing the demand management measures and water supply projects. Section 7.3 Section 7.3 10635(b)(1)
Include a description of the data, methodology, and basis for one or more supply shortage conditions that are necessary to conduct a drought risk assessment for a drought period that lasts five consecutive years.
Section 7.3.1
Section 7.3 10635(b)(2) Include a determination of the reliability of each source of supply under a variety of water shortage conditions. Section 7.2.3
Section 7.3 10635(b)(3) Include a comparison of the total water supply sources available to the Supplier with the total projected water use for the drought period. Section 7.3
Section 7.3 10635(b)(4)
Include considerations of the historical drought hydrology, plausible changes on projected supplies and demands under climate change conditions, anticipated regulatory changes, and other locally applicable criteria.
Section 7.2.2
Chapter 8 10632(a) Provide a water shortage contingency plan (WSCP) with specified elements below. Appendix C Chapter 8 10632(a)(1) Provide an analysis of water supply reliability (from Guidebook Chapter 7) in the WSCP. Appendix C Section 2 Section 8.2 10632(a)(2)(A) Provide the written decision-making process and other methods that the Supplier will use each year to determine its water reliability. Appendix C Section 3.1 Section 8.2 10632(a)(2)(B) Provide data and methodology to evaluate the Supplier’s water reliability for the current year and one dry year pursuant to factors in the code. Appendix C Section 3.2 Section 8.3 10632(a)(3)(A)
Define six standard water shortage levels of 10%, 20%, 30%, 40%, 50% shortage, and greater than 50% shortage. These levels shall be based on supply conditions, including percent reductions in supply, changes in groundwater levels, changes in surface elevation, or other conditions. The shortage levels shall also apply to a catastrophic interruption of supply.
Appendix C Section 5
Section 8.3 10632(a)(3)(B) Suppliers with an existing WSCP that uses different water shortage levels must cross reference their categories with the six standard categories. n/a
Section 8.4 10632(a)(4)(A) Suppliers with WSCPs that align with the defined shortage levels must specify locally appropriate supply augmentation actions. Appendix C Section 6.1
Section 8.4 10632(a)(4)(B) Specify locally appropriate demand reduction actions to adequately respond to shortages. Appendix C Section 6.2 Section 8.4 10632(a)(4)(C) Specify locally appropriate operational changes. Appendix C Section 6.1 Section 8.4 10632(a)(4)(D) Specify additional mandatory prohibitions against specific water use practices that are in addition to State-mandated prohibitions are appropriate to local conditions. Appendix C Section 6.2 Section 8.4 10632(a)(4)(E) Estimate the extent to which the gap between supplies and demand will be reduced by implementation of the action. Appendix C Appendix A
Section 8.4.6 10632.5 The UWMP shall include a seismic risk assessment and mitigation plan. Appendix C Section 7 Tuesday, June 16, 2026 Reg CC MTG, Page *536
Section 8.5 10632(a)(5)(A) Suppliers must describe that they will inform customers, the public and others regarding any current or predicted water shortages. Appendix C Section 8
Section 8.5 10632(a)(5)(B),
10632(a)(5)(C)
Suppliers must describe that they will inform customers, the public and others regarding any shortage response actions triggered or anticipated to be triggered and other relevant communications. Appendix C Section 8 Section 8.6 10632(a)(6) Retail Supplier must describe how it will ensure compliance with and enforce provisions of the WSCP. Appendix C Section 9 Section 8.7 10632(a)(7)(A) Describe the legal authority that empowers the Supplier to enforce shortage response actions. Appendix C Section 10 Section 8.7 10632(a)(7)(B) Provide a statement that the Supplier will declare a water shortage emergency per Water Code Chapter 3. Water Shortage Emergencies .
Appendix C Section 10
Section 8.7 10632(a)(7)(C) Provide a statement that the Supplier will coordinate with any city or county within which it provides water for the possible proclamation of a local emergency. Appendix C Section 10 Section 8.8 10632(a)(8)(A) Describe the potential revenue reductions and expense increases associated with activated shortage response actions. Appendix C Section 11
Section 8.8 10632(a)(8)(B) Provide a description of mitigation actions needed to address revenue reductions and expense increases associated with activated shortage response actions. Appendix C Appendix A Section 8.8 10632(a)(8)(C) Retail Suppliers must describe the cost of compliance with Water Code Chapter 3.3, Excessive Residential Water Use During Drought.
Appendix C Section 9, Appendix C
Section 11, Appendix C Section 12,
Appendix C Appendix A
Section 8.9 10632(a)(9) Retail Suppliers must describe the monitoring and reporting requirements and procedures that ensure appropriate data are collected, tracked, and analyzed for purposes of monitoring customer compliance. Appendix C Section 12 Section 8.10 10632(a)(10) Describe reevaluation and improvement procedures for monitoring and evaluation the WSCP to ensure risk tolerance is adequate and appropriate water shortage mitigation strategies are implemented. Appendix C Section 13 Section 8.11 10632(b) Analyze and define water features that are artificially supplied with water, including ponds, lakes, waterfalls, and fountains, separately from swimming pools and spas. Appendix C Section 6 Section 8.12 10632(c) Make available the WSCP to customers and any city or county where it provides water within 30 days after adoption of the plan. Appendix C Section 14
Sections 9.1 10631(e)(1)
Retail Suppliers shall provide a description of the nature and extent of each demand management measure implemented over the past five years. The description will address specific measures listed in code.
Section 9.2
Sections 9.2 10631(e)(2) Wholesale Suppliers shall describe specific demand management measures listed in code, their distribution system asset management program, and Supplier assistance program. n/a Chapter 10 10608.26(a) Retail Suppliers shall conduct a public hearing to discuss adoption, implementation, and economic impact of water use targets (recommended to discuss compliance). Section 10.1 Section 10.2.1 10621(b) Notify, at least 60 days prior to the public hearing, any city or county within which the Supplier provides water that the Supplier will be reviewing the UWMP and considering amendments or changes to the plan. Section 10.1 Section 10.4 10621(f) Each urban water Supplier shall update and submit its 2025 plan to DWR by July 1, 202 6. Section 10.1 Sections 10.2.2, 10.3,
and 10.5 10642 Provide supporting documentation that the Supplier made the UWMP and WSCP available for public inspection, published notice of the public hearing, and held a public hearing about the UWMP and WSCP. Appendix E Section 10.2.2 10642 The Supplier is to provide the time and place of the hearing to any city or county within which the Supplier provides water. Section 10.1, Appendix E
Section 10.3.2 10642 Provide supporting documentation that the UWMP and WSCP has been adopted as prepared or modified. Appendix F Section 10.4 10644(a) Provide supporting documentation that the Supplier has submitted their UWMP to the California State Library. Section 10.1
Section 10.4 10644(a)(1) Provide supporting documentation that the Supplier has submitted their UWMP to any city or county within which the Supplier provides water no later than 30 days after adoption. Section 10.1, Appendix E Tuesday, June 16, 2026 Reg CC MTG, Page *537
Sections 10.4.1 and
10.4.2 10644(a)(2) The UWMP, or amendments to the UWMP, submitted to DWR shall be submitted electronically. Section 10.1 Section 10.7.2 10644(b) If revised, submit a copy of the WSCP to DWR within 30 days of adoption. Section 10.1 Section 10.5 10645(a) Provide supporting documentation that, not later than 30 days after filing a copy of its UWMP with DWR, the Supplier has or will make the plan available for public review during normal business hours. Section 10.1 Section 10.5 10645(b) Provide supporting documentation that, not later than 30 days after filing a copy of its WSCP with DWR, the Supplier has or will make the plan available for public review during normal business hours. Appendix E Section 10.6 10621(c) If Supplier is regulated by the Public Utilities Commission, include its plan and contingency plan as part of its general rate case filings. Section 10.1
Tuesday, June 16, 2026 Reg CC MTG, Page *538
City of Lomita
2025 Urban Water Management Plan
Draft
Appendix B DWR Standardized Tables
B
Tuesday, June 16, 2026 Reg CC MTG, Page *539
CA1910051 City of Inglewood 4,490 1,911
4,490 1,911
Submittal Table 2-1 Retail: Public Water Systems
NOTES:
Volume of Water
Supplied 2025 (AF)
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
Total
Public Water System
Number
Public Water System
Name
Number of Municipal
Connections 2025
Tuesday, June 16, 2026 Reg CC MTG, Page *540
Select
One
Name of Regional Alliance or
RUWMP (Drop Down List)
NOTES:
Submittal Table 2-2: Plan Identification
Type of Plan
Individual UWMP
If Water Supplier is also a member of a SB X7-7
Regional Alliance, select name from the drop-down.
Regional Urban Water Management Plan (RUWMP)
If Supplier selected RUWMP, select name from the
drop-down.
Tuesday, June 16, 2026 Reg CC MTG, Page *541
Supplier is a wholesale supplier
Supplier is a retail supplier
UWMP Tables are in calendar years
UWMP Tables are in fiscal years
Unit AF
Submittal Table 2-3: Supplier Identification
Type of Supplier (select one or both)
Fiscal or Calendar Year (select one)
If using fiscal years provide month and date that the fiscal year begins (mm/dd)
Units of measure used in UWMP
(Select from the drop down list).
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent
throughout the UWMP as reported in Submittal Table 2-3.
NOTES:
Tuesday, June 16, 2026 Reg CC MTG, Page *542
Submittal Table 2-4 Retail: Water Supplier Information Exchange Water Code Section 10631(h)
The retail Supplier has informed the following wholesale supplier(s) of projected water use.
Wholesale Water Supplier Name
Add additional rows as needed
West Basin Municipal Water District
NOTES:
Tuesday, June 16, 2026 Reg CC MTG, Page *543
2025 2030 2035 2040 2045 2050(opt)
19,643 20,914 22,186 23,392 24,598 25,804
Submittal Table 3-1 Retail: Population - Current and Projected Water Code Section 10631(a)
Population
Served
NOTES:
Tuesday, June 16, 2026 Reg CC MTG, Page *544
Use Type
Drop down list
May select each use multiple times
These are the only use types that will be recognized by the WUEdata online submittal tool
Potable or Non-Potable
(OPTIONAL)
Drop down list
Volume (AF)
Other (optional) Residential Potable 1,439
Commercial Commercial Non-Potable 191
Institutional/Governmental Church Potable 11
Institutional/Governmental City Potable 16
Institutional/Governmental Government Potable 81
Institutional/Governmental School Potable 27
Distribution System Water Loss Real & Apparent Losses Potable 146 1720
191
Total 1,911
Submittal Table 4-1 Retail: Total Uses for Potable and Non-Potable Water — Actual Water Code Section 10631(d)(1)
NOTES:
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
This table identifies the unit of measure selected in Submittal Table 2-3. 2025 Actual Water Use
Add additional rows as needed
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)
Tuesday, June 16, 2026 Reg CC MTG, Page *545
Use Type
Drop down list
May select each use multiple times
These are the only Use Types that will be recognized by the WUEdata online submittal tool
Potable or Non-Potable
(OPTIONAL)
Drop down list
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 opt (AF)
Other (optional) Residential Potable 1,506 1,555 1,601 1,648 1,695 Commercial Commercial Potable 197 194 190 186 183
Institutional/Governmental Church Potable 10 11 11 12 12 Institutional/Governmental City Potable 22 21 21 20 20
Institutional/Governmental Government Potable 79 78 76 75 73 Institutional/Governmental School Potable 29 28 28 27 26 Distribution System Water Loss Real & Apparent Losses Non-Potable 120 123 125 128 131 1,843 1,887 1,927 1,968 2,009
120 123 125 128 131
1,963 2,010 2,052 2,096 2,140
Add additional rows as needed.
Submittal Table 4-2 Retail: Total Uses for Potable, and Non-PotableWater — Projected Water Code Section 10631(d)(1)
Projected Water Use
(Report To the Extent that Records are Available)
Additional Description (as
needed)
NOTES:
Total
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
Subtotal Non-Potable
Subtotal Potable
Tuesday, June 16, 2026 Reg CC MTG, Page *546
Are Future Water Savings Included in Projections?
Drop down list (y/n) Yes
If "Yes" to above, state the section or page number, in the cell to the right, where citations of the codes, ordinances, or otherwise are utilized in demand projections are found.
Optional Suppliers may complete Optional Submittal Table 4-4 R to quantify the expected savings.
Section 4.1.3
Are Lower Income Residential Demands Included In Projections? Drop down list (y/n) Yes
Optional If the method for accounting Lower Income Residential Demands has been included, provide page number where this accounting can be found. Section 4.2 Submittal Table 4-3 Retail: Inclusion in Water Use Projections Water Code Section 10631 (a), 10631 (d)(4)(A), and 10631 (d)(4)(B) NOTES:
DWR NOTES: Additional guidance is provided in Appendix K.
Tuesday, June 16, 2026 Reg CC MTG, Page *547
Public Water System ID # Reported
in Table 2-1 R Reporting Period Submitted to DWR Water Loss Audit Program (yes/no) 2020 Yes
2021 Yes
2022 Yes
2023 Yes
2024 Yes
Submittal Table 4-5 Retail: Water Loss Audit Reporting
Water Code Section 10631(d)(3)(A)
CA1910051
DWR NOTES: Suppliers will provide a link to the WUEdata submittals of their Water Loss Audit Reports.
NOTES:
Report submittal status for all five years for each Public Water System as available.
Add rows as needed
Tuesday, June 16, 2026 Reg CC MTG, Page *548
2028 Real Water Loss
Standard per Unit per
day
Units for Real
Water Loss
Drop down list
Number of Units
(Connections or Miles
corresponding with
units selected)
Volume of Total Real
Loss
(from AWWA Water
Loss Audit)
(AF)
2028 Apparent Water
Loss Standard per
Unit per Day
Units for
Apparent Water
Loss
Number of
Connections
Volume of Total
Apparent Loss
(from AWWA Water
Loss Audit)
(AF)
CA1910051 Yes 14.8
Gallons per
Service
Connection per
Day (GPSCD)
4,490 114.6 22.8 4.7
Gallons per
Service
Connection per
Day (GPSCD)
4,490 8.9 1.8
Submittal Table 4-6 Retail: Progress Towards 2028 Water Loss Standard Water Code Section 10631(d)(3)(C)
NOTES:
Apparent Water Loss
Did the Water Board Calculate a
Water Loss Standard for this
Public Water System? (y/n)
If no, Supplier will not complete
this row.
Real Water Loss
Water Board's Calculated Water Loss Standards
DWR NOTES: Units of measure (AF, CCF, MG) for Water Loss MUST remain consistent with units reported in Submittal Table 2-3. The units reported in Submittal Table 2-3 are used in this table's calculations.
Public Water
System ID #
Reported in
Submittal Table 2-1
R
Add additional rows as needed.
Most Recent AWWA Water Loss Audit
Real Water
Loss Per Unit
per Day
Most Recent AWWA Water Loss Audit
Apparent Water
Loss Per Unit per
Day
State Water Board Standard State Water Board Standard
Tuesday, June 16, 2026 Reg CC MTG, Page *549
Actual 2025 GPCD
(From SB X7-7
Compliance Form)
Did Supplier meet the
2020 Target in 2025?
No Individual Target 118 95 Yes NA
Submittal Table 5-1 Retail: SB X7-7 2020 Target Progress Water Code Section 10608.40
NOTES:
Did Supplier
Achieve Targeted
Reduction for
2020?
2020 Target Actual 2020 GPCD
Regional Alliance
Target or
Individual Target?
Drop down list
DWR NOTES:
Suppliers calculating a 2025 GPCD will need to complete and submit SB X 7-7 Compliance Tables to verify the use of SB X7-7 Methodologies.
Suppliers that were part of a merger or consolidation since 2020 see Chapter 5 and Appendix P for guidance.
NA=Not Applicable
Check the box if the Supplier was not an Urban Water Supplier during or before the 2020 UWMP reporting cycle. Proceed to the next table.
Only for suppliers that did not meet the
Target in 2020
See DWR NOTES below.
Was Supplier part of a
merger or
consolidation since
2020?
Tuesday, June 16, 2026 Reg CC MTG, Page *550
Groundwater Type
Drop Down List
May use each category
multiple times
Potable or
Non-Potable
(OPTIONAL)
Drop down list
Location or Basin Name 2021 (AF) 2022 (AF) 2023 (AF) 2024 (AF) 2025 (AF) Alluvial Basin Potable West Coast Basin 0 0 0 0 14
0 0 0 0 14
Submittal Table 6-1 Retail: Groundwater Volume Pumped
Water Code Section 10631(4) and 10631(4)(c)
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
NOTES
Total
Check the box if the Supplier does not pump groundwater.
Proceed to the next table.
Check the box if all or part of the groundwater described below is desalinated. (OPTIONAL) Tuesday, June 16, 2026 Reg CC MTG, Page *551
Name of Wastewater
Collection Agency
Wastewater
Volume Metered
or Estimated?
OPTIONAL
Drop Down List
Volume of Wastewater
Collected from UWMP
Service Area 2025 (AF)
Name of Wastewater
Treatment Plant (WWTP) and
Place ID Number
Drop down list
Is WWTP Located
Within UWMP
Area?
Drop Down List
LACSD Estimated 1,337
A.K. Warren Water Resource
Facility, Place ID 234156 No
1,337
Check the box if there is no wastewater collection system.
Proceed to the next table.
NOTES:
Submittal Table 6-2 Retail: Wastewater Collected Within Service Area Water Code Section 10633(a)
Percentage of 2025 service area population served by wastewater collection system (OPTIONAL)
Percentage of 2025 service area served by wastewater collection system (OPTIONAL) DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.
Wastewater Collection Recipient of Collected Wastewater Total Wastewater Received from UWMP
Service Area in 2025:
Tuesday, June 16, 2026 Reg CC MTG, Page *552
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Treatment Level
Drop down list
Volume
(AF)
Name of other
entity
0 - 0 0 0 0 0
Submittal Table 6-3 Retail: Wastewater Treatment and Outcomes Within UWMP Service Area Water Code Section 10633(b)
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
IPR: Indirect Potable Reuse would have the treatment level of its end use requirement in the Level of Treatment drop-down.
Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.
Water Recycled Outside of
UWMP Service Area
(enter data as applicable)
Effluent Discharge that is
not a Permitted Recycled
Water Use
(enter data as applicable)
Required Discharge for
Instream Flow
(enter data as applicable)
Delivered to Another Entity for Additional
Treatment
(enter data as applicable)
2025 Outcomes of Treated Wastewater
Check the box if no wastewater is treated or disposed of within the UWMP service area.
Proceed to the next table.
Does This Plant
Treat
Wastewater
Generated
Outside the
UWMP Service
Area?
(OPTIONAL)
Drop down list
Wastewater Treatment
Plant Name and Place ID
Number
Drop down list
Total 2025
Volume of
Water
Treated (AF)
NOTES:
Total
2025 Volume of
Wastewater
Received from
UWMP Service
Area
(As Reported in
Submittal Table
6-2 R) (AF)
Water Recycled Within
UWMP Service Area
(enter data as applicable)
Tuesday, June 16, 2026 Reg CC MTG, Page *553
Volume Narrative page number
(OPTIONAL)
0 0 0 0 0 0 0
0 0 0 0 0 0 0
Total 0 0 0 0 0 0 0 0
Use Type
Drop down list
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop down list
Additional Information
(as needed)
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.
Potential recycled water use: a description of the feasibility of these uses must be included in the narrative.
Multiple Producers: If you have multiple recycled water producers, submit a separate table for each.
NOTES:
2025 (AF) 2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF) Subtotal Potable
Subtotal Non-Potable
Check box if recycled water is not used and is not planned for use within the service area of the supplier. The supplier will only complete the column on "Potential Recycled Water Use" and submit an accompanying narrative on the feasibility of that potential recycled water use.
Submittal Table 6-4 Retail: Recycled Water Direct Beneficial Uses Within Service Area Water Code Section 10633 (c),(d),(e)
Potential Recycled Water Use
Name(s) of Facility/ies Producing (Treating) the Recycled Water (OPTIONAL) : Edward C. Little Water Recycling Facility Name of Supplier Operating the Recycled Water Distribution System (OPTIONAL) : West Basin Municipal Water District Volume of Supplemental Water Added in 2025 (OPTIONAL) :
Source of 2025 Supplemental Water (OPTIONAL) :
Tuesday, June 16, 2026 Reg CC MTG, Page *554
2020 Projection
for 2025 (AF)
2025 Actual
Use (AF)
0 0
Submittal Table 6-5 Retail: 2020 UWMP Recycled Water Use Projection Compared to 2025 Actual
Water Code Section 10633(e)
Check the box if recycled water was not used in 2025 nor previously projected for use in 2020.
Proceed to the next table.
Add additional rows as needed
NOTES:
Total
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure reported in Submittal Table 2-3 Additional Guidance: See Appendix M, Section M.21 for detailed guidance on this table.
Use Type
Drop Down list
Tuesday, June 16, 2026 Reg CC MTG, Page *555
Name of Action Description Expected Increase in Recycled Water Use (AF)
0 0
Total (AF)
DWR NOTES:
Units of measure (AF, CCF, MG) MUST remain consistent with units reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
The unit conversion to Acre Feet addresses the Water Code's requirement that this value be provided in acre-feet.
NOTES:
Submittal Table 6-6 Retail: Methods to Encourage Future Recycled Water Use Water Code Section 10633(f)
Check the box if the Supplier does not plan to expand recycled water use in the future. Supplier will not complete the table below but will provide narrative explanation.
Provide page location of narrative in the UWMP
Unit Conversion to AF
Planned Implementation Year
Tuesday, June 16, 2026 Reg CC MTG, Page *556
Drop Down
List
(yes/no)
If Yes, Supplier Name
Planned for Use in
Year Type
Drop Down List
NOTES:
Submittal Table 6-7 Retail: Expected Future Water Supply Projects or Programs Water Code Section 10631(f)
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure reported in Submittal Table 2-3.
Check the box if some or all of the supplier's future water supply projects or programs are not compatible with this table and are described in a narrative format.
Check the box if there are no expected future water supply projects or programs that provide a quantifiable increase to the agency's water supply.
Proceed to the next table.
Planned
Implementation Year
Joint Project with other suppliers? Expected
Increase in
Water Supply
to Supplier
(This may be a
range) (AF)
Provide page location of narrative in the UWMP
Name of Future Projects
or Programs
Additional Description
(as needed)
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
Tuesday, June 16, 2026 Reg CC MTG, Page *557
Water Supply
Drop down list
May use each category multiple times.
These are the only water supply
categories that will be recognized by the
WUEdata online submittal tool
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
Actual Volume
(AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes' below
(AF)
Purchased or Imported Water From Metropolitan via West Basin MWD
Potable 1,897
Groundwater (not desalinated) West Coast Basin Potable 14 1,352 1,911 1,352
0 0
1,911 1,352
Submittal Table 6-8 Retail: Water Supplies — Actual
Water Code Section 10631(b)
2025
NOTES:
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3.
Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.
Add additional rows as needed
Total
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)
Tuesday, June 16, 2026 Reg CC MTG, Page *558
2021 (AF) 2022 (AF) 2023 (AF) 2024 (AF) 2025 (AF)
Total 0 0 0 0 0
NOTES:
Optional Table 6-8DS: Source Water Desalination by Urban Water Supplier Check the box if the Supplier does not reduce salinity in either groundwater or surface water prior to distribution.
Volume of Water Desalinated
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submital Table 2-3. This table identifies the units of measure reported in Submittal Table 2-3.
Desalination Facility
Drop Down list
Plant
Capacity
Intake Type
Drop down list
Source Water Type
Drop down list
Influent
TDS
Brine Discharge
Drop down list
Name(s) of Agencies
that Receive this Water
Tuesday, June 16, 2026 Reg CC MTG, Page *559
Water Supply
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Reasonably
Available
Volume (AF)
Total Entitlement
(OPTIONAL)
See 'DWR Notes'
below (AF)
Purchased or Imported Water From Metropolitan via
West Basin MWD
Potable 611 658 700 744 788
Groundwater (not
desalinated) West Coast Basin Potable 1,352 1,352 1,352 1,352 1,352 1,352 1,352 1,352 1,352 1,352 1,963 1,352 2,010 1,352 2,052 1,352 2,096 1,352 2,140 1,352 0 0 0 0 0 0 0 0 0 0
1,963 1,352 2,010 1,352 2,052 1,352 2,096 1,352 2,140 1,352 Submittal Table 6-9 Retail: Water Supplies — Projected
Water Code Section 10631 (b)
Projected Water Supply (Report to the Extent Practicable) Drop down list
May use each category multiple
times. These are the only water
supply categories that will be
recognized by the WUEdata online
submittal tool
Additional Detail on
Water Supply
Potable or Non-Potable
(after treatment if treated)
(OPTIONAL)
Drop Down list
2050 (opt)
Add additional rows as needed
Total
NOTES:
2030 2035 2040 2045
Subtotal Non-Potable
Subtotal Potable
DWR NOTES:
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
Total Entitlement: e.g. Water Right, Groundwater Allocation, Contracted Amount.
Tuesday, June 16, 2026 Reg CC MTG, Page *560
Water Delivery Product
drop down list
(If delivering more than one type of product recommend using Table O-1C)
Retail Potable
Deliveries
Start Date of Reporting Period 5/1/2020
End Date of Reporting Period 4/30/2021
Is upstream embedded energy in the values reported? No
Units of Measure for Water AF Total Utility
See DWR NOTES
Hydropower Net Utility
1,894 1,894
25,653 25,653
41.6 - 42
Quantity of Self-Generated Renewable Energy
0 kWh
Data Quality (Estimate, Metered Data, Combination of Estimates and Metered Data) Data Quality Narrative:
Narrative:
Optional Submittal Table O-1B: Recommended Energy Reporting - SINGLE DELIVERY PRODUCT - TOTAL UTILITY APPROACH Only for Water Delivery Products Under the Urban Water Supplier's Operational Control Sum of All Water Management
Processes
Non-Consequential Hydropower
DWR NOTES:
Total Utility:The volume of water entered in the “Total Utility” column should equal the volume of water entering the distribution system (excluding recycled water); in most cases, this is the total volume calculated in UWMP Table 4-1: 2025 Actual Total Uses for Potable and Non-Potable Water. Note if recycled water is included in your Submittal Table 4-1, you must exclude it from your volume in this table.
NOTES:
Volume of Water Entering Process
Energy Consumed (kWh)
Energy Intensity (kWh/vol. converted to MG)
Tuesday, June 16, 2026 Reg CC MTG, Page *561
% of Average Supply
Average Year 2019 100%
Single-Dry Year 2020 100%
Consecutive Dry Years 1st Year 2018 104%
Consecutive Dry Years 2nd Year 2019 100%
Consecutive Dry Years 3rd Year 2020 105%
Consecutive Dry Years 4th Year 2021 102%
Consecutive Dry Years 5th Year 2022 97%
1,963
1,963
Year Type
Base Year
If not using a calendar
year, type in the last
year of the fiscal,
water year, or range
of years, for example,
water year 2024-
2025, use 2025
Optional Submittal Table 7-1 Retail: Basis of Water Year Data (Reliability Assessment) Available Supplies if
Year Type Repeats
Check the box if quantification of available supplies is not compatible with this table and is provided elsewhere in the UWMP.
Location: [insert location from UWMP]
Volume Available (AF)
Quantification of available supplies is provided in this table as either volume only, percent only, or both.
2,041
1,955
NOTES:
2,070
2,009
1,912
DWR NOTES: Supplier may use multiple versions of Submittal Table 7-1 R if different water sources have different base years and the supplier chooses to report the base years for each water source separately. If a Supplier uses multiple versions of Submittal Table 7-1 R, in the "Note" section of each submittal table, state that multiple versions of Submittal Table 7-1 R are being used and identify the particular water source that is being reported in each submittal table.
Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3. This table reports the units of measure reported in Submittal Table 2-3.
Tuesday, June 16, 2026 Reg CC MTG, Page *562
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals
(autofill from Submittal Table 6-
9 R)
1,963 2,010 2,052 2,096 2,140
Use totals
(autofill from Submittal Table 4-
2 R)
1,963 2,010 2,052 2,096 2,140
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation
benefit
WSCP - use reduction savings
benefit
Revised Surplus/(shortfall)
OPTIONAL Planned WSCP Actions
Submittal Table 7-2 Retail: Normal Year Supply and Use Comparison Water Code Section 10635 (a)
NOTES:
DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
Tuesday, June 16, 2026 Reg CC MTG, Page *563
Supply totals 1,963 2,010 2,052 2,096 2,140
Use totals 1,963 2,010 2,052 2,096 2,140
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised Surplus/(shortfall)
2050 (AF)
DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
NOTES
Submittal Table 7-3 Retail: Single Dry Year Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF)
Tuesday, June 16, 2026 Reg CC MTG, Page *564
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals 1,963 2,010 2,052 2,096 2,140
Use totals 1,963 2,010 2,052 2,096 2,140
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 1,973 2,019 2,061 2,104 2,140
Use totals 1,973 2,019 2,061 2,104 2,140
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 1,982 2,027 2,070 2,113 2,140
Use totals 1,982 2,027 2,070 2,113 2,140
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 1,991 2,036 2,078 2,122 2,140
Use totals 1,991 2,036 2,078 2,122 2,140
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Supply totals 2,001 2,044 2,087 2,131 2,140
Use totals 2,001 2,044 2,087 2,131 2,140
Surplus/(shortfall) 0 0 0 0 0
WSCP - supply augmentation benefit
WSCP - use reduction savings benefit
Revised Surplus/(shortfall)
Submittal Table 7-4 Retail: Multiple Dry Years Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
Third year
Fifth year
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
OPTIONAL Planned WSCP Actions
OPTIONAL Planned WSCP Actions
Fourth year OPTIONAL Planned WSCP Actions
NOTES:
First year
Second year OPTIONAL WSCP Actions
Tuesday, June 16, 2026 Reg CC MTG, Page *565
2026 Total
Total Water Use (AF) 1,947
Total Supplies (AF) 1,947
Surplus/Shortfall w/o WSCP Action 0
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
2027 Total
Total Water Use (AF) 1,951
Total Supplies (AF) 1,951
Surplus/Shortfall w/o WSCP Action 0
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
2028 Total
Total Water Use (AF) 1,955
Total Supplies (AF) 1,955
Surplus/Shortfall w/o WSCP Action 0
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
2029 Total
Total Water Use (AF) 1,959
Total Supplies (AF) 1,959
Surplus/Shortfall w/o WSCP Action 0
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
2030 Total
Total Water Use (AF) 1,963
Total Supplies (AF) 1,963
Surplus/Shortfall w/o WSCP Action 0
WSCP - supply augmentation benefit (AF)
WSCP - use reduction savings benefit (AF)
Revised Surplus/(shortfall)
NOTES:
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
Submittal Table 7-5 Retail: Five-Year Drought Risk Assessment Water Code Section 10635(b)(3)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
OPTIONAL Planned WSCP Actions (use reduction and supply augmentation)
Tuesday, June 16, 2026 Reg CC MTG, Page *566
Standard
Shortage
Levels
Percent Shortage
Range
Suppliers
Shortage
Levels
Percent
Shortage Range
1 Up to 10%
2 Up to 20%
3 Up to 30%
4 Up to 40%
5 Up to 50%
6 >50%
Submittal Table 8-1: Cross-reference for Standard vs
Supplier Shortage Levels
Water Code Section 10632(a)(3)(B)
Check the box if the Supplier uses the Standard
six levels of water shortage.
Proceed to the next table.
NOTES:
Tuesday, June 16, 2026 Reg CC MTG, Page *567
Volume or
Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range) (AF)
1 Expand Public Information Campaign Percentage 10%
2 Improve Customer Billing Percentage 20% Billing can be used to flag high use. 3 Transfers Percentage 30% Coordinate with adjacent agencies. 4 Other Purchases Percentage 40% Possible rental or purchase of water tanks. 5 Implement or Modify Drought Rate
Structure or Surcharge Percentage 50%
6 Other Actions (describe) Percentage >50% Mobilize water trucks.
Submittal Table 8-2 Retail: Supply Augmentation and Other Actions Water Code Section 10632(a)(4)(A),(C) and (E)
Add additional rows as needed
NOTES:
Is the Supplier completing this table using the standard six levels? (yes/no) How much is this going to reduce the
shortage gap?
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
Shortage
Level
Supply Augmentation Methods and
Other Actions by Water Supplier
Drop down list
These are the only categories that will be
accepted by the WUEdata online submittal tool
Additional Explanation or Reference
(OPTIONAL)
Tuesday, June 16, 2026 Reg CC MTG, Page *568
Volume or Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range) (AF)
1 Landscape - Limit landscape irrigation to specific times Percentage 10% Yes 2 Other - Prohibit vehicle washing except at facilities using recycled or recirculating water Percentage 20% Yes 3 CII - Lodging establishment must offer opt out of linen service Percentage 30% Yes 4 Landscape - Prohibit all landscape irrigation Percentage 40% Yes 5 Other Percentage 50% Yes
6 Other Percentage >50% Yes
Is the Supplier completing this table using the standard six levels? (yes/no) Submittal Table 8-3 Retail: Demand Reduction Actions
Water Code Section 10632(a)(4)(B),(D), and (E)
How much is this going to reduce the shortage
gap?
Shortage
Level
Demand Reduction Actions
Drop down list
These are the only categories that will be accepted by the WUEdata online submittal tool. Select those that apply.
Additional Explanation or Reference
(OPTIONAL)
NOTES:
Penalty, Charge, or
Other
Enforcement?
For Retail Suppliers Only
Drop Down List
DWR NOTES: Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.
Tuesday, June 16, 2026 Reg CC MTG, Page *569
City Name 60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
City of Torrance Yes Yes
County Name
Drop Down List
60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
Los Angeles County Yes Yes
Submittal Table 10-1 Retail: Notification to Cities and Counties Water Code Section 10621(b) and 10642
Add additional rows as needed
NOTES:
Tuesday, June 16, 2026 Reg CC MTG, Page *570
City of Lomita
2025 Urban Water Management Plan
Draft
Appendix C Water Shortage
Contingency Plan
C
Tuesday, June 16, 2026 Reg CC MTG, Page *571
Water Shortage
Contingency Plan
CITY OF LOMITA
MAY 2026 CITY OF LOMITA
Tuesday, June 16, 2026 Reg CC MTG, Page *572
CITY OF LOMITA
Water Shortage
Contingency Plan
UPDATED: MAY 2026
DRAFT
Updated by Water Systems Consulting, Inc.
Tuesday, June 16, 2026 Reg CC MTG, Page *573
Table of Contents
Water Shortage Contingency Plan | ii
TABLE OF CONTENTS
1.0 General Description......................................................................................................... 5
1.1 Water Code Requirements........................................................................................... 5
1.2 Regional Contingency Plans ........................................................................................ 6
2.0 Water Service Reliability Analysis.................................................................................... 6
3.0 Annual Water Supply and Demand Assessment Procedures .......................................... 9
3.1 Decision-making Process............................................................................................. 9
3.2 Key Data Inputs ........................................................................................................... 9
4.0 Health and Safety Needs................................................................................................10
5.0 Water Shortage Stages ..................................................................................................10
6.0 Shortage Response Actions ...........................................................................................11
6.1 City Response Actions & Operational Changes ..........................................................12
6.2 Prohibitions on End Use .............................................................................................13
7.0 Disaster Management ....................................................................................................16
7.1 Emergency Response Plan.........................................................................................16
7.2 Seismic Risk ...............................................................................................................18
8.0 Communication Protocols...............................................................................................19
9.0 Compliance and Enforcement ........................................................................................20
10.0 Legal Authority............................................................................................................20
11.0 Financial Consequences of WSCP Implementation ....................................................20
11.1 Impacts to Revenue ................................................................................................21
11.2 Impacts to Reserve Funds.......................................................................................21
12.0 Monitoring and Reporting............................................................................................21
12.1 Monitoring ...............................................................................................................21
12.2 Enforcement............................................................................................................22
12.3 Reporting.................................................................................................................22
13.0 WSCP Refinement Procedures...................................................................................22
13.1 Cyclical Updates......................................................................................................22
13.2 Data Driven Updates ...............................................................................................23
13.3 Externally Driven Updates .......................................................................................23
13.4 WSCP Re-Adoption.................................................................................................23
14.0 Plan Adoption, Submittal, and Availability ...................................................................23 References ...............................................................................................................................24 Tuesday, June 16, 2026 Reg CC MTG, Page *574
List of Figures
Water Shortage Contingency Plan | iii
Appendix A: Water Shortage Contingency Plan Overview ........................................................25 Appendix B: Draft Local Hazard Mitigation Plan........................................................................26 Appendix C: Emergency Operations Plan .................................................................................27
LIST OF FIGURES
Figure 1: Basic Overview of Water Quality Contamination Response for City Well .................... 8 Figure 2: Fault Zones Near the City ..........................................................................................18
LIST OF TABLES
Table 1: Water Fixtures for Health and Safety Personal Use (Gallons Per Day)........................10 Table 2: Water Shortage Stages and Reduction Targets ..........................................................11 Table 3: City Water Shortage Response Actions.......................................................................12 Table 4: City Code Prohibitions on Water Use During Water Shortages ...................................14 Tuesday, June 16, 2026 Reg CC MTG, Page *575
Acronyms & Abbreviations
Water Shortage Contingency Plan | 4
ACRONYMS & ABBREVIATIONS
AMR Automatic Meter Reading
CWC California Water Code
DWR California Department of Water Resources
EOC Emergency Operations Center
EOP Emergency Operations Plan
GPM Gallons Per Minute
LHMP Local Hazard Mitigation Plan
MWD Metropolitan Water District of Southern California
UWMP Urban Water Management Plan
WBMWD West Basin Municipal Water District
WRD Water Replenishment District of Southern California WSCP Water Shortage Contingency Plan
Tuesday, June 16, 2026 Reg CC MTG, Page *576
City of Lomita
Water Shortage Contingency Plan 5
1.0 General Description
This Water Shortage Contingency Plan (WSCP) is a strategic plan that the City of Lomita (City) uses to prepare for and respond to water shortages. A water shortage occurs when the water supply available is insufficient to meet customer water demand at a given point in time. A shortage may occur due to a number of reasons including water supply quality changes, drought, regional power outages, and catastrophic events (e.g., an earthquake, pumping equipment failures, sudden spikes in groundwater contaminants, intentional or accidental manmade catastrophes). Additionally, the State may declare a statewide drought emergency and mandate that water suppliers reduce demands. The WSCP serves as the operating manual that the City will use to prevent catastrophic service disruptions through proactive, rather than reactive, mitigation of water shortages.
Long-term water shortages can be addressed through conservation and supply augmentation.
Short-term water shortages are best handled through a “Contingency Plan.” This WSCP provides a process for an annual water supply and demand assessment and structured steps designed to respond to actual conditions in potential shortages. This level of detailed planning and preparation provides accountability and predictability to help the City maintain reliable supplies and reduce the impact of any supply shortages and/or interruptions.
This WSCP was updated in conjunction with the City’s 2025 Urban Water Management Plan (UWMP) and was based on the City’s 2020 WSCP and UWMP (West & Associates, 2022). This WSCP is a standalone document that can be modified as needed. This document is compliant with the California Water Code (CWC) Section 10632 and incorporates guidance from the State of California Department of Water Resources (DWR) UWMP Guidebook.
The City has legal authority and obligation to implement a WSCP during droughts or sudden supply interruptions. Response actions are codified in the City’s Municipal Code (Section 12-4, Article 1 “Water Use”). Sections 5.0 and 6.0 identify shortage response actions and procedures for declaring a water shortage in accordance with CWC §10632(a)(3)(A).
1.1 Water Code Requirements
As a result of historic droughts and flooding, the following changes were made to the CWC in 2018 that affected WSCPs:
• CWC §10632(a): Every urban water supplier must prepare and adopt a WSCP as part of its UWMP.
• CWC §10632(a)(1): WSCPs must include water supply reliability analysis, including reliability under five consecutive dry years.
• CWC §10632(a)(2): WSCPs must include procedures for conducting annual water supply and demand assessments.
• CWC §10632(a)(3)(A): WSCPs must include six standard shortage stages, including shortages greater than 50 percent of normal water supply.
Tuesday, June 16, 2026 Reg CC MTG, Page *577
City of Lomita
Water Shortage Contingency Plan 6
• CWC §10632(a)(4): WSCPs must include shortage response actions and identify how actions address shortage severity.
• CWC §10632(a)(5): WSCPs must include communication protocols to inform customers and the public of current or predicted shortages.
• CWC §10632(a)(6): WSCPs must describe procedures for ensuring customer compliance and enforcement mechanisms for shortage responses. • CWC §10632(a)(7) (A)-(C): WSCPs must describe the legal authority that empowers enforcement and include statements that the supplier will declare a water shortage emergency and coordinate with local government for possible local emergency proclamations.
• CWC §10632(a)(8) (A)-(C): WSCPs must include financial impacts of drought shortages, mitigation strategies to address impacts, and include cost of compliance. • CWC §10632(a)(9): WSCPs must define monitoring and reporting procedures for compliance tracking and reporting to the State.
• CWC §10632(a)(10): WSCPs must include evaluation procedures and a process to adjust the WSCP as needed.
• CWC §10632(b):
Additional actions affecting WSCPs include State Water Resources Control Board Resolution 2014-0038 and Governor Brown’s Executive Order B-29-15 (2015). The City responded by modifying its Contingency Ordinance (Ordinance No. 678) and continues to follow these requirements.
1.2 Regional Contingency Plans
A significant portion of the City’s water supply comes from West Basin Municipal Water District (WBMWD), which receives water from the Metropolitan Water District of Southern California (MWD). As a result, regional contingency planning plays a key role in local reliability. MWD’s WSCP aligns with its Water Surplus and Drought Management Plan and Water Supply Allocation Plan. These documents provide a framework for managing supplies during surplus and shortage conditions and form the basis for annual supply and demand assessments.
WBMWD operates in conjunction with MWD’s contingency planning. As a member agency, the City’s contingency policies are aligned with WBMWD’s policies and actions. Regional contingency plans and respective response actions are outlined in MWD’s and WBMWD’s 2025 UWMPs and WSCPs.
2.0 Water Service Reliability Analysis
The City’s water supplies include groundwater from the West Coast Groundwater Basin and imported water purchased from WBMWD which is provided by MWD. The reliability of the sources is discussed in Chapter 6 and analyzed in Chapter 7 of the City’s 2025 UWMP.
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Locally, imported water is constrained by the availability of supplies from the State Water Project, Colorado River Aqueduct, and other sources at the WBWMD’s disposal. The City purchases wholesale distributed water from WBMWD which is provided by MWD. Groundwater is generally highly reliable and but constrained by the availability of replenishment water to WRD, who manages the West Coast Groundwater Basin. The basin is reliant on recycled water, imported water, and natural runoff captured in the regional spreading grounds for replenishment. Each of these sources has its own constraints; however, WRD’s diversified supply portfolio tends to reduce those constraints. Local groundwater quality has historically been an issue that has resulted in increased reliance on imported water to meet demands.
However, in partnership with WRD, the City has invested heavily in treatment upgrades at the City’s groundwater well to increase quality and reliability of the City’s groundwater supply.
In the event of a loss of groundwater, the City may request additional imported water from WBMWD, subject to availability. The City’s water system includes two imported water connections allowing deliveries of additional available water supplies. MWD, who supplies imported water purchased from WBMWD, describes supply augmentation actions in its 2025 UWMP (MWD, 2026). In the event of a shortage of imported water, groundwater pumping can be increased up to the total pumping right from the groundwater basin, which includes the City’s adjudicated rights, net carryover, leases, and any storage. Groundwater pumping is limited to the capacity of the City’s well and treatment along with any blending requirements. Figure 1 shows a general procedure that the City takes when there are groundwater water quality concerns.
The City’s 2025 UWMP water service reliability assessment and drought risk assessment results indicate that no water shortages are anticipated within the next 25-years under normal, single dry water years, and multiple dry water years. Since a significant portion of the City’s water supply is provided by WBMWD, which in turn is provided through MWD, the reliability analysis is heavily dependent on the reliability analyses of these agencies. The city is dependent on these sources to provide a reliable water supply and works with WBMWD to ensure water reliability in the future.
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Figure 1: Basic Overview of Water Quality Contamination Response for City Well Tuesday, June 16, 2026 Reg CC MTG, Page *580
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3.0 Annual Water Supply and Demand
Assessment Procedures
The City is required to prepare an Annual Water Supply and Demand Assessment (Annual Assessment) and submit an Annual Water Shortage Assessment Report to DWR by July 1 of each year.
3.1 Decision-making Process
City staff review production and consumption data starting in January and present an assessment to City Council by May of each year. The final Annual Assessment is then submitted to DWR by July 1 of each year.
3.2 Key Data Inputs
Annual Assessments are based on metered data from wells and customer meters, available monthly or more frequently using AMR technology. The Annual Assessment uses data to help forecast demand and estimate water supply availability, taking into consideration any known infrastructure constraints. The Annual Assessment also considers weather, population growth, and other influencing factors, such as state or local policies that will impact water demands, or regulations affecting water supplies. The key data inputs staff rely on to complete Annual Assessments include:
1. Estimated dry-year demand without any conservation measures.
2. Estimated total water supply availability under dry-year scenarios. The water supply available will be based on what is available to the City, regardless of pumping capacity.
Groundwater supplies can be estimated from annual WRD Basin Reports and from local groundwater level monitoring by WRD.
3. Estimated capacity of water production infrastructure. Any known or forecasted issues affecting the City’s water production infrastructure will be considered, such as:
a. Mechanical or electrical issues with groundwater well pumps. b. Possible power outages for operation and maintenance. c. New construction and repairs.
The potential constraints on supply capacity listed under Item 3 above are subject to change from year to year. Thus, the City should analyze well conditions before deciding on forecasted groundwater supplies. In addition, the City should coordinate with WBMWD to understand any potential constraints on imported water supplies.
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4.0 Health and Safety Needs
In 2018, the State adopted Assembly Bill 1668, which amends Section 10608.20 of the Water Code to stipulate an indoor water use standard of 55 gallons per capita per day. However, this standard is subject to adjustment. Thus, the City is obligated to determine the minimum health and safety water needs for its residents. To assess the minimum amount of water that should be available (1st Priority Level), the amount of personal hygiene household water use must be quantified. Based on common indoor residential water use in the United States, health and safety water use is estimated to be as follows:
Table 1: Water Fixtures for Health and Safety Personal Use (Gallons Per Day) Item Regular Voluntary Conservation
Toilet 14 10.5
Shower 15 12
Washer 12 11
Kitchen 4 3
Other 4 4
Total 49 gal 40.5 gal
Since the City has a population of about 20,000 residents, at a rate of 40 gallons per capita per day, the City will need up to 2.5 acre-feet (0.8 million gallons) per day to provide for the health and safety of its residents (if conservation is voluntary). Since the City’s Cypress Reservoir has a capacity of 5.3 million gallons, the City can provide for nearly one week of water supply to its residents. However, the ability to meet the most basic water needs of its residents during a severe shortage may prove to be difficult unless the City’s citizens are aware of the water supply shortage. Thus, public outreach must be a top priority for the City during a water shortage.
5.0 Water Shortage Stages
The City’s WSCP imposes six (6) stages of response actions based on the severity of the City’s water supply shortage. The stages are based on DWR’s established criteria as shown in Table
2. To reduce potential confusion for City customers, the first four stages (Stages 1 to 4) regulate customer responses to shortages, while the latter two stages (Stages 5 to 6) regulate City water staff response efforts.
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Table 2: Water Shortage Stages and Reduction Targets
Shortage Stage Restriction Type Water Supply Reduction Target I Mandatory 10%
II Mandatory 20%
III Mandatory 30%
IV Mandatory 40%
V Mandatory 50%
VI Mandatory >50%
The Lomita City Council will formally declare the stage of the water shortage, following a public hearing, upon determination from City water staff that a water shortage exists and the WSCP should be implemented. Following City Council declaration of a shortage stage, the WSCP will become effective no sooner than the first billing period on or after the date of publication of the Council Resolution. The WSCP will remain in effect until the City Council declares the water shortage emergency has ended. Alternatively, the City Council may also change the stage of the water shortage as appropriate; however, the City Council will not impose mandatory measures without first conducting a duly noticed public hearing pursuant to CWC §350 or §375.
6.0 Shortage Response Actions
The City’s Water Conservation and Drought Management Plan is codified as Section 12-4 of the Municipal Code. The WSCP establishes a phased response based on shortage severity. The City Council declares shortage stages by resolution following a public hearing.
Objectives of the response plan are to:
1. Prioritize essential uses of water.
2. Maximize local municipal water supplies.
3. Eliminate water waste city-wide.
4. Minimize adverse financial effects.
Water use priorities are based on California Water Code Sections 350–358:
• First Priority: Minimum health and safety residential indoor needs. • Second Priority: Commercial, industrial, and institutional uses. • Third Priority: Existing landscaping.
• Fourth Priority: New customers and proposed projects.
Shortage response actions by category along with estimated effectiveness are detailed in Appendix A and summarized in the following sections.
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6.1 City Response Actions & Operational Changes
In a water shortage, the City takes proactive steps to reduce demand and augment supplies by engaging the public, modifying operations, enforcing prohibitions, and plan for contingencies.
Table 4 summarizes the City’s response actions and operational changes by shortage stage.
Table 3: City Water Shortage Response Actions
Stage City Water Department Response Action
Stage 1
(<10%) • Begin an Enhanced Public Awareness Campaign
Stage 2
(10% to 20%)
• No Refilling of Municipal Ornamental Lakes or Ponds, Except as Necessary to Sustain Aquatic Life
• Reduced Flushing Frequency
• No New Potable Water Service
• No New Temporary Meters or Permanent Meters
• No Statements of Immediate Ability to Serve or Provide Potable Water Service (Will Serve Letters, Certificates, Or Letters of Availability)
• Suspend Consideration of Annexations to the City’s Water Service Area
• Establish a Water Allocation for Certain Properties Within the City's Jurisdiction
Stage 3
(20% to 30%)
• Increase Groundwater Pumping
• Issue Water Quality Notices (if Necessary) in Case Additional Pumping Creates Water Quality Issues
• Coordinate with Adjacent Agencies to Prepare for Possible Need of Emergency Water when/if Conditions Worsen
• Notify customers immediately of suspected leaks in their plumbing
• Repair or Isolate Water Main Leaks within 24 Hours
• Provide Letters to Certain Properties for Allocations Established in Stage 2 Informing Reduction of 10% in Allocation of Tiered Rate
• Elimination of Specific Municipal Uses such as Hydrant Flushing, Street Cleaning, and Water-Based Recreation
Stage 4
(30% to 40%)
• Rate Increase Study to Mitigate Loss of Revenue
• Further Increase in Rates for Certain Over-Allocation Properties Issued Warnings/Notices in Stage 3
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Stage City Water Department Response Action
• Increase Frequency of Meter Readings to Once Monthly in Order to Allow Staff and Customers to Track Progress
• Implement Water Waste Patrols (Once Monthly)
• Coordinate with Adjacent Agencies to Receive Emergency Water via Emergency Interconnections
• Deter Flushing of Mains Until Maximum Allowable Time for Quality/Safety
• Coordinate with Manufacturers and/or Governing Agencies to Receive Fleet of Potable Water Trucks
Stage 5
(40% to 50%)
• Systemwide Rate Increase to Achieve Necessary Reduction and to Mitigate Loss of Revenue
• Notices on Government Access Channel (TV)
• Hand-Post Drought Notices on all Customer Properties
(Residential Homes & Commercial Buildings)
Stage 6
(>50%)
• Mobilize Potable Water Trucks
• Decrease Pressure in Water Mains
6.2 Prohibitions on End Use
Per Section 12-4 of the City’s Municipal Code, prohibitions on water use include, but are not limited to, the following:
1. Allowing irrigation runoff
2. Landscape irrigation for more than 15 minutes (except drip irrigation)
3. Irrigation on rainy days or within specified hours of a rain event.
4. Failure to repair leaks in a timely manner
5. Washing of automobiles without a bucket or hand-held hose equipped with a positive shutoff nozzle
6. Restaurants serving water to their customers, except when specifically requested by their customers
7. Operating a decorative water fountain without re-circulated water
8. Operating a commercial car wash without re-circulated water
9. Operating a single-pass cooling system
10. Hotels, motels, and other commercial lodging establishments shall not launder towels and linens daily, except when specifically requested by their customer Table 4 provides a full list of prohibitions by shortage stage. All prohibitions with additional detail are included Appendix A.
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Table 4: City Code Prohibitions on Water Use During Water Shortages Stage Prohibition/Restriction Penalty
Stage 1
(<10%)
• No Irrigation between 10 am to 8 pm
• No Person Shall Operate a Decorative Water Feature
(Fountains, Ponds, etc.) that Does Not have a
Recirculating System
• All Landscape Irrigation Limited to No More than Three (3) Days per Week from June 1 to Oct 31 and No More
than Once per Week from Nov 1 to May 31
• All Landscape Irrigation Limited to No More than 15
minutes per Station per Watering Day
• Repair or Isolate Leaks within 72 Hours of Notification by the City
• No Washing Sidewalks and Driveways with Water
• Car Washing Only with Bucket or a Hose with Shutoff
Valve or Nozzle
• Excess Irrigation Runoff is Prohibited
• No Landscape Irrigation During or Within 48 hours of a Rain Event
• Restaurants to Serve Water Only Upon Request
• Restaurants to Wash Kitchen and Dining Room with
Bucket or Specialized Water Broom Only
• Hotels/Motels to Provide Customer Option of Daily
Laundry
• Automobile Wash Business Must Use Water Recycling
Systems
Yes
Stage 2
(10% to 20%)
• All Landscape Irrigation Limited to No More than Two
(2) Days per Week from June 1 to Oct 31 and No More
than Once per Week from Nov 1 to May 31
• All Landscape Irrigation Limited to No More than 10
minutes per Station per Watering Day
• Water landscaped areas, including trees and shrubs
located on residential and commercial properties, by
using a bucket, hand-held hose with a positive shutoff
nozzle, or low-volume, non-spray irrigation.
• No Refilling of Ornamental Lakes or Ponds, Except to
Sustain Aquatic Life
• Repair or Isolate Leaks within 48 Hours of Notification by the City
Yes
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Stage Prohibition/Restriction Penalty
• Pools or Spas to have a Cover to Prevent Evaporation
• Cease All Operation of Decorative Water Features
(Fountains, Ponds, etc.)
• Car Washing Limited to Only Automobile Washes that
Use Water Recycling Systems
• No Landscape Irrigation During or Within 72 hours of a Rain Event
• Commercial Nurseries shall Use Water Only During the
Hours from Midnight to 6 am
• Commercial Landowners to Allow Tenants the Option of
Replacing Lawns & Landscapes
Stage 3
(20% to 30%)
• All Landscape Irrigation Limited to No More than Once per Week from June 1 to Oct 31 and No Irrigation from
Nov 1 to May 31
• All Landscape Irrigation Limited to No More than 7
minutes per Station per Week
• Repair or Isolate Leaks within 24 Hours of notification by the City
• No Landscape Irrigation During or Within 1 Week of a
Rain Event
• No Refilling of Pools or Spas
• Restaurants to Wash Dining Room Once Daily (after
Close of Business) and Only with Bucket or Specialized
Water Broom
• Restaurants to Pre-Soak Dishes
Restaurants to Install Solenoid Valve for Sinks with
Garbage Disposals
• No Commercial Window-Washing
• Apartment Buildings to Certify Low-Flow Fixtures
(Showerheads and Faucets) are Installed prior to
Leasing Apartments
• Commercial Buildings and Restaurants to
Replace/Install Waterless Urinals
• Commercial Buildings and Restaurants to
Replace/Install Low-Flow Toilets
• Hotels/Motels to Wash Laundry Only After Change of
Customer
Yes
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Stage Prohibition/Restriction Penalty
Stage 4
(30% to 40%)
• Cease All Irrigation Except by Reclaimed Water or
Except for Crops or Horticulture (Nurseries) or for Fire or Erosion Maintenance
• Commercial Landscape to be Replaced with CAFriendly Landscape Yes
Stages 5
(40% to 50%)
• N/A (Same Requirements as Stages 1 to 4 Above)
• This Stage Involves Only Additional
Operational/Management Response Actions
Yes
Stages 6
(50% or more)
• N/A (Same Requirements as Stages 1 to 4 Above)
• This Stage Involves Only Additional
Operational/Management Response Actions
Yes
7.0 Disaster Management
7.1 Emergency Response Plan
The City’s Draft Local Hazard Mitigation Plan (LHMP), included in Appendix B, is currently being updated to address the planned response to extraordinary emergency situations associated with natural disasters, including seismic disasters. Other City planning tools, such as the City’s Emergency Operations Plan (EOP), included in Appendix C, provides for the most effective and economical allocation of resources for the maximum benefit and protection of life, property, and the environment during an emergency. The EOP supersedes the City’s prior Standardized Emergency Management System Multi-Hazard Functional Plan, which was adopted in January 2006. These two plans provide the City with a means to mitigate potential crisis, address the crisis, and maintain communication during the crisis. These documents address seismic risk and response in the City. In accordance with the intent of the City’s LHMP and EOP, this WSCP Section recommends that water staff shall maintain water operations as follows:
• All on-duty personnel are expected to remain on duty until relieved of duty • Off-duty personnel will be expected to return to work or be “on-call” • While in a disaster mode, working shifts will be 12 hours This WSCP Section also recommends that the City’s Water Operations Manager carry out operations as follows:
• Assess impact of incident
• Establish contacts with neighboring water agencies
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• Identify need for and prioritize locations for water distribution • Provide water quality assurance or prepare notices for water quality • Evaluate, plan, and implement action to acquire and distribute alternative water • Determine the need to staff a water task group and secure resources through the Logistics Section
• Provide informational status to nearby water agencies, including:
o WBMWD
o City of Torrance
o City of Los Angeles
o California Water Service
• Provide information to media as appropriate.
Perhaps the most critical task in the City’s response to a catastrophe is the distribution of water to customers. Portable pumps and water trucks can be used to distribute water to customers.
This WSCP provides a general guide of City response actions to catastrophes. Other planning documents, including the City’s LHMP, provide additional details which supplement this WSCP.
WBMWD and MWD are available to assist the City to facilitate the flow of information and provide emergency supplies. MWD has established an Emergency Operations Center (EOC) to assist its staff and its member agencies during a water supply emergency. In 2019, MWD started a new five‐year emergency exercise plan that will allow all of its member agencies to participate in at least one of MWD’s annual emergency exercises. MWD’s EOC also conducts monthly communication tests, which include MWD’s emergency two-way radio system, on-line WebEOC system, Met-Alert mass notification system, and satellite phones. These monthly tests reach out to the member agencies, Treatment Plant Control Centers, ICPs, MWD management, and DWR. These regular exercises help prepare MWD and its member agencies to respond to future emergencies.
In the event of an MWD supply shortage, the City will indirectly rely on MWD’s catastrophic event plan to utilize the Diamond Valley Lake reservoir, which can provide six months of emergency supply. If there were a catastrophic failure of the California Aqueduct or the Colorado River Aqueduct conveyance facilities, MWD could draw on emergency supplies in Diamond Valley Lake. The City will be informed indirectly during a catastrophic event that affects MWD’s water supplies. Locally, WBMWD, as the MWD member agency, will utilize the Met- Alert system to immediately contact its customer agencies about potential interruption of services.
Additional emergency services in the State of California include the Master Mutual Aid Agreement and the California Water Agency Response Network (CalWARN). The Master Mutual Aid Agreement includes all public agencies that have signed the agreement and is planned out of the California Office of Emergency Services. CalWARN includes all public agencies that have signed the agreement to WARN and provides mutual aid assistance. It is managed by a State Steering Committee and Regional Chairs.
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The City’s distribution system has three emergency connections. One connection is with the City of Los Angeles and the other two connections are with the City of Torrance. The City of Los Angeles connection is an 8-inch, two-way connection with a maximum capacity of 1,800 GPM.
The two connections with the City of Torrance are 8-inch, one-way connections with a maximum capacity of 1,350 GPM. These three connections can allow water to flow into the City’s water system during emergencies.
7.2 Seismic Risk
According to the maps provided on the California Office of Emergency Services’ online planning tool (My Plan) and the California Geological Survey’s online earthquake hazards zone application (EQ Zapp), three (3) known faults exist within close proximity to the City. The faults include the Palos Verdes Vault, the Newport-Inglewood Fault, and the Cabrillo Fault. The known fault lines are shown in Figure 2. The faults are located within ten miles of the City.
Figure 2: Fault Zones Near the City
Source: (California Geological Survey, 2024)
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An earthquake has the potential to damage drinking water and wastewater utilities. Impacts to the City’s water system may include, but not be limited to:
• Structural damage to facility infrastructure and equipment • Water tank damage or collapse
• Damage to water distribution system
Damage to distribution lines due to shifting ground and soil liquefaction, resulting in potential water loss, water service interruptions, low pressure, contamination and sinkholes and/or large pools of water throughout the service area.
Unlike a power outage or a man-made catastrophe, earthquakes can potentially restrict water supplies for a longer period. If an earthquake damages significant portions of the City’s pumping or distribution system, the City can provide temporary drinking water to customers through potable water trucks.
Even if an earthquake does not result in damage to water production or distribution facilities, an earthquake could result in a power outage or damage to the water system facilities. The City’s water operations staff will be on standby alert during an emergency to respond promptly to water supply interruptions. The City’s water operations staff will work with Southern California Edison to restore power to water supply facilities. In the interim and if water quality is safe for consumption, the City’s Well No. 5 can receive backup power. That is, the City can provide a diesel-powered generator to Well No. 5, so that the well can remain operational until power is restored.
8.0 Communication Protocols
A common understanding of the water supply situation is essential for the WSCP to be effective.
During a water shortage, the City will be able to allocate staffing and resources to inform its customers of the Council-declared water shortage. In particular, the City will inform its water service customers of the following:
• Water Shortage Stage
• Water Use Prohibitions
• City Water Staff Response Actions
The communication protocol will be in place prior to formal declaration of a water supply shortage. The frequency and extent of coordination will be based on the severity of the shortage to ensure effectiveness of a declared water shortage. The City will use the following resources to communicate with its customers:
• City Website
• Social Media (i.e., Twitter/Facebook)
• Bill Inserts/Postcard Notices
• Billboard or Digital Message Boards
• Advertisements (Radio & Print)
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The goal of the communication efforts will be to raise awareness of the drought and to motivate the City’s water service customers to conserve water. The City should also prepare customers for possible increases in water shortage severity. The key goal of communication is to promote available water resources for vulnerable populations, provide specialized outreach for impacted industries, including instructions on how to receive emergency bottled water, and how to participate in public hearing meetings with City staff.
9.0 Compliance and Enforcement
Per City Code Section 12-4:
“Any person who uses, causes to be used, or permits the use of water in violation of any section of this chapter is guilty of an offense punishable as follows:
1. The first violation of any section herein shall constitute an infraction whereby a written warning shall be issued to the party or parties witnessed committing the infraction; and
2. The second violation of any section herein shall constitute an infraction punishable in accordance with title I, chapter 2 (Penalty Provisions) of the Lomita Municipal Code.” The penalties listed above may be waived if a customer completes a “Hardship Variance” and provides supporting documentation for proof of hardship.
10.0 Legal Authority
Response to water shortages is codified into City Municipal Code (Section 12-4, Article 1 “Water Use”). When necessary, the City will declare a water shortage emergency in accordance with CWC Chapter 3. The City will coordinate internally as well as with Los Angeles County for the possible proclamation of a local emergency.
11.0 Financial Consequences of WSCP
Implementation
A full list of anticipated financial consequences for each shortage action is included in Appendix A. Consequences are identified as either reductions in revenue or increased expenses, and potential mitigation actions are suggested. This information is summarized in the following sections.
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11.1 Impacts to Revenue
During a water shortage, revenue generated through water sales will be impacted. Based on the City's total water revenue and operating expenses, demand reductions will likely result in negative net cash provided by operating activities.
Fiscal impacts can be mitigated by considering changes to the City’s water rate fee structure in future rate planning cycle. In addition, the following actions could take place under such circumstances:
• Implement a drought rate surcharge
• Delay capital improvement projects
• Consider temporary increase of water rates to meet operation and maintenance costs.
A combination of the measures outlined above may be used to offset or diminish the effects of lost revenues. Capital construction projects may be deferred as appropriate. The base water rate may be increased to cover the general operation, maintenance, system upgrades, and capital expenditures. An increase in the base rate would be temporarily employed and then returned to pre-shortage rates when conditions improve.
11.2 Impacts to Reserve Funds
The City carries reserves in the water system accounts to fund for needed improvements to its water system. The balance of reserves the City is maintained primarily for facility repair and replacement. Under a shortage crisis, some flexibility would exist to dip into these reserves to help offset loss of revenue.
12.0 Monitoring and Reporting
To properly assess the effectiveness of this WSCP, the City will need to monitor metered consumption and production. The City will also need to track its billing system to see if fines for violations of water-use prohibitions have been issued.
12.1 Monitoring
Using the City’s water billing records, the City will be able to identify not only the conserved volumes, but also the customers which are in violation of the provisions of this chapter. In particular, the City can review data from the following sources:
• Production Meters: Provides an account of daily water production • Customer Meters: Provides an account of monthly consumption With Automatic Meter Reading (AMR) technology, the City can monitor the meters for irrigation violations during a water waste patrol. The AMR meters allow the City to view consumption immediately from a patrolling vehicle.
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In addition to monitoring customer use, the City also can monitor production volumes to determine if the well supplies have been reduced. Under normal conditions, potable water production is recorded daily. Weekly and monthly reports are prepared and monitored. This data will be used as a baseline to measure the effectiveness of a water shortage stage that may be implemented.
During rationing conditions, the water budget will be monitored on a weekly, daily, or hourly basis depending on the severity of the drought. During a disaster shortage, production figures will be monitored on an ongoing basis. The City’s monitoring system will warn of any critical conditions instantly. In addition, meter readings will be performed more frequently than the normal bi-monthly schedule.
12.2 Enforcement
During shortage conditions, the City can implement water-waste patrols or increase the frequency of existing water waste patrols. If City staff are unable to conduct additional water waste patrols, the City can contract with outside support to conduct water waste patrols.
However, contracting with an outside firm would incur additional costs at a time when revenue is impacted. If violations are observed, fines/penalties per Section 8.7.5 can be applied.
12.3 Reporting
During a declared water shortage, City water staff will report water production and consumption figures to City Council monthly. Additionally, during the declared shortage of the WSCP, City staff will report water production and consumption figures to the State Water Resources Control Board on a monthly basis.
13.0 WSCP Refinement Procedures
The City intends to update and refine this WSCP as necessary. The WSCP can be updated in one of the following ways:
• Cyclical Updates
• Data-Driven Updates
• Externally-Driven Updates
The following is a guideline for how the City will update this WSCP:
13.1 Cyclical Updates
The cyclical updates will be handled by City staff internally with the assistance of an outside engineering consultant. Once the WSCP is implemented, the City will document the effectiveness of the customer water use prohibitions listed in Table 4 and the City water staff response actions listed in Table 3. The effectiveness will be evaluated using the methodologies under Section 12.0. The WSCP effectiveness will be documented over the course of five (5) Tuesday, June 16, 2026 Reg CC MTG, Page *594
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years, until the next UWMP update. It is the City’s intent to update the WSCP every 5 years, alongside the City’s UWMP. The City will conduct an internal review of the WSCP prior to releasing a Request for Proposals for the UWMP and WSCP. The Request for Proposals process will provide the City with an opportunity to revise the WSCP as needed.
13.2 Data Driven Updates
Data-driven updates to the WSCP will likely occur mid-cycle or at some point between the 5- year cycle. The data-driven updates can be prepared entirely by City staff (internally) due to the urgency of such updates. For example, if the City finds that the fines/penalties are not effective at reducing overall demand, the City may increase the fines through an amendment to Section 12-4 of the City Municipal Code and revise the WSCP (Code Section 12-4) to reflect the new fines. Other items of this WSCP can be updated in a similar manner.
13.3 Externally Driven Updates
Conversely, if the fines are found by the City’s customers to be too punitive, and Council is petitioned to reduce the fines, the City can adjust Section 12-4 of the City Municipal Code and revise the WSCP herein to reflect the new fines. Other items of this WSCP can be updated in a similar manner.
13.4 WSCP Re-Adoption
Once the WSCP is revised, the City Council will be required to re-adopt the revised WSCP. This will require a public hearing to receive public comments on the WSCP. The revised WSCP will replace the former WSCP and will then remain effective until the City elects to update the WSCP.
14.0 Plan Adoption, Submittal, and
Availability
The City adopted this WSCP with the 2025 UWMP. The 2025 UWMP and WSCP were made available for public review in May 2026 and a public hearing was held on June 16, 2026 to receive public input on the draft 2025 UWMP and the WSCP.
The Lomita City Council adopted the 2025 UWMP and the WSCP at a public meeting on June 16, 2026. The resolution of adoption is included as an attachment.
This WSCP was submitted to DWR through the WUEData portal before the deadline of July 1, 2026. This WSCP will be available to the public on the City’s website.
If the City identifies the need to amend this WSCP, it will follow the same procedures for notification to cities, counties, and the public as used for the 2025 UWMP and for initial adoption of the WSCP.
Tuesday, June 16, 2026 Reg CC MTG, Page *595
City of Lomita
Water Shortage Contingency Plan 24
References
California Geological Survey. (2024). Fault Activity Map of California. Retrieved from https://maps.conservation.ca.gov/cgs/fam/App/
MWD. (2026). Draft 2025 Urban Water Management Plan. Metropolitan Water District of Southern California.
West & Associates. (2022). 2020 Urban Water Management Plan. City of Lomita, CA.
Tuesday, June 16, 2026 Reg CC MTG, Page *596
City of Lomita
Water Shortage Contingency Plan 25
Appendix A: Water Shortage
Contingency Plan Overview
Tuesday, June 16, 2026 Reg CC MTG, Page *597
Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions --- --- --- ---
< 5% --- --- ---
10% - 20% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage < 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- --- 10% - 20% X --- Drought Rate Surchage
< 5% --- --- ---
5% - 10% X --- ---5% - 10% X --- ---
10% - 20% X --- Drought Rate Surchage
5% - 10% --- X Use Financial Reserve Funds
Repair Leaks within 72 Hours of Notification by the City Automobile Wash Business Must Use Water Recycling SystemsHotels/Motels to Provide Customer Option of Daily Laundry Excess Irrigation Runoff is ProhibitedAll Landscape Irrigation Limitted to No More than 15 minutes per Station per Watering Day Water Waste
Begin an Enhanced Public Awareness CampaignNo Landscape Irrigation During or Within 48 hours of a Rain EventRestaurants to Wash Kitchen and Dining Room with Bucket or Specialized Water Broom Only Operational
No Irrigation between 10 am to 8 pmNo Person Shall Operate a Decrorative Water Feature (Fountains, Ponds, etc.) that Does Not have a Recirculating SystemAll Landscape Irrigation Limitted to No More than Three (3) Days per Week from June 1 to Oct 31 and No More than Once per Weekfrom Nov 1 to May 31 PERMANENT & STAGE 1 SHORTAGE
WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
Description
(1 / 6) ≤10%
No Washing Sidewalks and Driveways with WaterCar Washing Only with Bucket or a Hose with Shutoff Valve or Nozzle Commercial
Restaurants to Serve Water Only Upon Request
Shortage
Alert
General
External (Council or Public Initiated Revisions)
Local State
Penalties in accordance with Title 1, Chapter 2 of Municipal Code Medical or Financial Hardships. Application to be Filled Out and Submitted to City Staff.
Communication Procedures
Print Telecommunication Online
Bill Inserts. Local Newspaper. Bus Ads. Phone Calls. Text Messages. Email. City's Website. Facebook. Twitter. Web Ads.
Monitoring & Reporting
Data Collection Data Analysis
Cyclical
Compliance
Customer Meter Readings. Imported Connection Meter Readings. Well Production Meter Readings Water Shortage Contingency Plan
Federal
Legal Authority
City Municipal Code Chapter 4. Ordinance No. 722 CA Water Code 10632 Federal Disaster Mitigation Act of 2000 Enforcement
Patrol/Monitoring Fines/Penalties Variances/Exceptions
On-Foot Meter Readers. Vehicular Meter Readings. SCADA Meter Readings Revise WSCP Every 5 Years w/ UWMP --> Review & Comments --> Finalize --> Council Hearing & Adoption Revise WSCP --> Review & Comments --> Finalize --> Council Hearing & Adoption External Comments --> Revise Draft --> Review & Comments --> Finalize --> Council Hearing & Adoption Tabular Data. Bar Charts. Line Charts.
City Staff to Submit Data to Operations Manager & Public Works Director on Bi-Weeky Basis (2x per Month) City Finance/Billing Staff to Use Communication Procedures to Convey Compliance to Customers.
Results to Show Effectiveness and Trigger Refinements in WSCP per Refinement Procedurs Below Data-Driven Revisions (from Monitoring Above) or City Staff Initiated Revisions Refinement Procedures
Tuesday, June 16, 2026 Reg CC MTG, Page *598
Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 10% - 20% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage < 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- --- 10% - 20% X --- Drought Rate Surchage
5% - 10% --- --- ---
10% - 20% X --- Drought Rate Surchage
< 5% --- --- ---< 5% --- --- ---
--- --- --- ------ --- X Use Financial Reserve Funds
No Refilling of Municipal Ornamental Lakes or Ponds, Except as Necessary to Sustain Aquatic LifeAll Landscape Irrigation Limitted to No More than Two (2) Days per Week from June 1 to Oct 31 and No More than Once per Week from Nov 1 to May 31Repair Leaks within 48 Hours of Notification by the City Water Waste
No Refilling of Ornamental Lakes or Ponds, Except as Necessary to Sustain Aquatic LifeAll Landscape Irrigation Limitted to No More than 10 minutes per Station per Watering DayNo Landscape Irrigation During or Within 72 hours of a Rain Event STAGE 2 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED HEREIN) WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
Description
Repair Water Main Leaks within 24 HoursPools and Spas to have a Cover to Prevent EvaporationCease All Operation of a Decrorative Water Features (Fountains, Ponds, etc.)Commercial Landowners to Allow Tenants the Option of Replacing Lawns & Landscapes with CA-Friendly Landscape General
Operational
Commercial
10 ‐ 20% Shortage Condition
Establish a Water Allocation for Certain Properties Within the City's Jurisdiction 2 / 6
Suspend Consideration of Annexations to the City’s Water Service AreaCar Washing Limited to Only Automobile Wash Businesses that Use Water Recycling SystemsCommercial Nurseries shall Use Water Only During the Hours from Midnight to 6:00 amWater landscaped areas, including trees and shrubs located on residential and commercial properties, by using a bucket, hand-held hose with a positive shutoff nozzle, or low-volume, nonspray irrigation.
Tuesday, June 16, 2026 Reg CC MTG, Page *599
Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 20% - 30% X --- Drought Rate Surchage20% - 30% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage < 5% --- --- ---
20% - 30% X --- Drought Rate Surchage
< 5% --- --- ---< 5% --- --- ---< 5% --- --- ---< 5% --- --- --- 10% - 20% X --- Drought Rate Surchage
10% - 20% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage10% - 20% --- --- --- --- --- X Use Financial Reserve Funds
--- --- X Use Financial Reserve Funds
5% - 10% --- X Use Financial Reserve Funds
< 5% --- --- ---
No Commercial Window-WashingHotels/Motels to Wash Laundry Only After Change of CustomerRepair Leaks within 24 Hours of notification by the City Restaurants to Install Solenoid Valve for Sinks with Garbage Disposals Water Waste
Restaurants to Wash Dining Room Once Daily (after Close of Business) and Only with Bucket or Specialied Water Broom Commercial
Commercial Buildings and Restaurants to Replace/Install Waterless UrinalsCommercial Buildings and Restaurants to Replace/Install Low-Flow ToiletsIssue Water Quality Notices (if Necessary) in Case Additional Pumping Creates Water Quality IssuesIncrease Groundwater Pumping (3 / 6)
Description
All Landscape Irrigation Limitted to No More than 7 minutes per Station per Week STAGE 3 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED ABOVE OR HEREIN) WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
20 ‐ 30%
No Refilling of Pools and SpasNo Landscape Irrigation During or Within 1 Week of a Rain EventCoordinate with Adjacent Agencies to Prepare for Possible Need of Emergency Water when/if Conditions WorsenElimination of Specific Municipal Uses such as Hydrant Flushing, Street Cleaning, and Water-Based Recreation Operational
Severe
Shortage
Condition
General
Restaurants to Pre-Soak DishesProvide Letters to Certain Properties for Allocations Established in Stage 2 Informing Reduction of 10% in Allocation of Tiered Rate(or other percentage to be specified)All Landscape Irrigation Limitted to No More than Once per Week from June 1 to Oct 31 and No Irrigation from Nov 1 to May 31Apartment Buildings to Certify Low-Flow Fixtures (Showerheads and Faucets) are Installed prior to Leasing Apartments Tuesday, June 16, 2026 Reg CC MTG, Page *600
Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 30% - 40% X --- Drought Rate Surchage20% - 30% X --- Drought Rate Surchage10% - 20% X --- Drought Rate Surchage --- --- --- ------ --- --- ------ --- --- ------ --- X Use Financial Reserve Funds Defer Capital Improvements 5% - 10% --- X Use Financial Reserve Funds Defer Capital Improvements --- --- X Use Financial Reserve Funds Defer Capital Improvements--- --- X Use Financial Reserve Funds Defer Capital Improvements--- --- X Use Financial Reserve Funds Defer Capital Improvements < 5% --- --- ---
--- --- X Use Financial Reserve Funds Defer Capital Improvements Description
No New Potable Water ServiceNo New Temporary Meters or Permanent MetersNo Statements of Immediate Ability to Serve or Provide Potable Water Service (Will Serve Letters, Certificates, Or Letters of Availability) Operational
Rate Increase Study to Mitigate Loss of RevenueCoordinate with Adjacent Agencies to Receive Emergency Water via Emergency Interconnections Commercial
Response Action Financial Consequences WSCP
Level Severity
STAGE 4 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED ABOVE OR HEREIN) Critical
Shortage
Condition
Shortage
Level
4 / 6 30 ‐ 40%
General
Cease All Irrigation Except for Crops or Horticulture (Nurseries) or for Fire or Erosion Maintenance Water Waste
N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 3)Coordinate with Manufacturers and/or Governing Agencies to Receive Fleet of Potable Water TrucksDeter Flushing of Mains Until Maximum Allowable Time for Quality/SafetyCommercial Landscape to be Replaced with CA-Friendly LandscapeImplement Water Waste Patrols (Once Monthly)Further Increase in Rates for Certain Over-Allocation Properties Issued Warnings/Notices in Stage 3Increase Frequency of Meter Readings to Once Monthly in Order to Allow Staff and Customers to Track Progress Tuesday, June 16, 2026 Reg CC MTG, Page *601
Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 40% - 50% X --- (New) Rate Increase40% - 50% X --- (New) Rate Increase40% - 50% X --- (New) Rate Increase40% - 50% --- X Use Financial Reserve Funds Defer Capital Improvements40% - 50% --- X Use Financial Reserve Funds Defer Capital Improvements Estimated Effectiveness
(Systemwide) Reductions in Revenue Increased Expenses Potential Mitigation Actions 40% - 50% X --- (New) Rate Increase40% - 50% X --- (New) Rate Increase40% - 50% X --- (New) Rate Increase10% - 20% --- X Use Financial Reserve Funds Defer Capital Improvements10% - 20% --- X Use Financial Reserve Funds Defer Capital Improvements N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 4) STAGE 6 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED ABOVE OR HEREIN) STAGE 5 SHORTAGE (ALL STAGE 1 CRITERIA SHALL BE IN PLACE EXCEPT AS AMMENDED ABOVE OR HEREIN) Operational
Commercial
Operational
N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 5) WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
Description
6 / 6 >50%
Crisis
Shortage
Condition
Mobilize Potable Water TrucksDecrease Pressure in Water MainsN/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 5)N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 5) General
Water Waste
Hand-Post Drought Notices on all Customer Properties (Residential Homes & Commercial Buildings) 5 / 6 40 ‐ 50%
Emergency
Shortage
Condition
Water Waste
WSCP
Level
Shortage
Level Severity
Response Action Financial Consequences
Description
Commercial
N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 4)Systemwide Rate Increase to Achieve Necessary Reduction and to Mitigate Loss of Revenue General
N/A (Same as Conditions Under Stage 1 and Ammended by Stages 2 to 4) Tuesday, June 16, 2026 Reg CC MTG, Page *602
City of Lomita
Water Shortage Contingency Plan 26
Appendix B: Draft Local Hazard
Mitigation Plan
The City of Lomita’s Local Hazard Mitigation Plan can be accessed online at:
https://lomitacity.com/local-hazard-mitigation-plan/
Tuesday, June 16, 2026 Reg CC MTG, Page *603
City of Lomita
Water Shortage Contingency Plan 27
Appendix C: Emergency Operations Plan
The City of Lomita’s Emergency Operations Plan can be access online at:
https://lomitacity.com/wp-content/uploads/2021/12/EOP-Basic-Plan-11-27-17.pdf Tuesday, June 16, 2026 Reg CC MTG, Page *604
City of Lomita
2025 Urban Water Management Plan
Draft
Appendix D Delta Reliance
D
Tuesday, June 16, 2026 Reg CC MTG, Page *605
1 Appendix D. Infeasibility of Accounting Supplies from the Delta Watershed for Metropolitan’s Member Agencies and
their Customers
Metropolitan’s service area, as a whole, reduces reliance on the Delta through investments in non-Delta water supplies, local water supplies, and regional and local demand management measures. Consistent with Metropolitan’s 2025 Urban Water Management Plan (UWMP), reduced reliance on supplies from the Delta watershed is evaluated at the regional level through changes in regional self-reliance and total reliance on Delta supplies. Metropolitan’s member agencies coordinate reliance on the Delta through their membership in Metropolitan, a regional cooperative providing wholesale water service to its 26 member agencies. Accordingly, regional reliance on the Delta can only be measured regionally—not by individual Metropolitan member agencies and not by the customers of those member agencies.
Metropolitan’s member agencies, and those agencies’ customers, indirectly reduce reliance on the Delta through their collective efforts as a cooperative. Metropolitan’s member agencies do not control the amount of Delta water they receive from Metropolitan. Metropolitan manages a statewide integrated conveyance system consisting of its participation in the State Water Project (SWP), its Colorado River Aqueduct (CRA) including Colorado River water resources, programs and water exchanges, and its regional storage portfolio. Along with the SWP, CRA, storage programs, and Metropolitan’s conveyance and distribution facilities, demand management programs increase the future reliability of water resources for the region. In addition, demand management programs provide system-wide benefits by decreasing the demand for imported water, which helps to decrease the burden on the district’s infrastructure and reduce system costs, and free up conveyance capacity to the benefit of all member agencies.
Metropolitan’s costs are funded almost entirely from its service area, with the exception of grants and other assistance from government programs. Most of Metropolitan’s revenues are collected directly from its member agencies. Properties within Metropolitan’s service area pay a property tax that provided approximately 15 percent of the fiscal year 2024 annual budgeted revenues. The rest of Metropolitan’s costs are funded through rates and charges paid by Metropolitan’s member agencies for the wholesale services it provides to them.1 Thus, 1 A standby charge is collected from properties within the service areas of 22 of Metropolitan’s 26 member agencies, ranging from $5 to $15 per acre annually, or per parcel if smaller than an acre. Standby charges go towards those member agencies’ obligations to Metropolitan for the Readiness-to-Serve Charge.
Standby charges represented approximately 2 percent of Metropolitan’s total revenues in Fiscal Year 2025/26. See Metropolitan Water District of Southern California, Water Standby Charge for Fiscal Year 2025/26, Board Materials (as presented May 13, 2025 and incorporated in subsequent budget materials, including November 2025 revision), and Metropolitan Water District of Southern California, Water Revenue Bonds Official Statement, Appendix A – “The Metropolitan Water District of Southern California.” Tuesday, June 16, 2026 Reg CC MTG, Page *606
2 Metropolitan’s member agencies fund nearly all operations Metropolitan undertakes to reduce reliance on the Delta, including Colorado River Programs, storage facilities, Local Resources Programs and conservation programs within Metropolitan’s service area.
Because of the integrated nature of Metropolitan’s systems and operations, and the collective nature of Metropolitan’s regional efforts, it is infeasible to quantify each of Metropolitan’s member agencies’ individual reliance on the Delta. It is infeasible to attempt to segregate an entity and a system that were designed to work as an integrated regional cooperative.
In addition to the member agencies funding Metropolitan’s regional efforts, they also invest in their own local programs to reduce their reliance on any imported water. Moreover, the customers of those member agencies may also invest in their own local programs to reduce water demand. However, to the extent those efforts result in reduction of demands on Metropolitan, that reduction does not equate to a like reduction of reliance on the Delta.
Demands on Metropolitan are not commensurate with demands on the Delta because most of Metropolitan’s member agencies receive blended resources from Metropolitan as determined by Metropolitan—not the individual member agency—and for most member agencies, the blend varies from month-to-month and year-to-year due to hydrology, operational constraints, use of storage and other factors.
Colorado River Programs
As a regional cooperative of member agencies, Metropolitan invests in programs to ensure the continued reliability and sustainability of Colorado River supplies. Metropolitan was established to obtain an allotment of Colorado River water, and its first mission was to construct and operate the CRA. The CRA consists of five pumping plants, 450 miles of high voltage power lines, one electric substation, four regulating reservoirs, and 242 miles of aqueducts, siphons, canals, conduits and pipelines terminating at Lake Mathews in Riverside County. Metropolitan owns, operates, and manages the CRA. Metropolitan is responsible for operating, maintaining, rehabilitating, and repairing the CRA, and is responsible for obtaining and scheduling energy resources adequate to power pumps at the CRA’s five pumping stations.
Colorado River supplies include Metropolitan’s basic Colorado River apportionment, along with supplies that result from existing and committed programs, including supplies from the Imperial Irrigation District (IID)-Metropolitan Conservation Program, the implementation of the Quantification Settlement Agreement (QSA) and related agreements, and the exchange agreement with San Diego County Water Authority (SDCWA). The QSA established the baseline water use for each of the agreement parties and facilitates the transfer of water from agricultural agencies to urban uses. Since the QSA, additional programs have been implemented to increase Metropolitan’s CRA supplies. These programs have continued to evolve in response to ongoing drought conditions in the Colorado River Basin and associated shortage and contingency actions. These include the PVID Land Management, Crop Rotation, and Water Supply Program, as well as the Lower Colorado River Water Supply Project. The 2007 Interim Guidelines provided for the coordinated operation of Lake Powell and Lake Mead, Tuesday, June 16, 2026 Reg CC MTG, Page *607
3 as well as the Intentionally Created Surplus (ICS) program that allows Metropolitan to store water in Lake Mead.
Storage Investments/Facilities
Surface and groundwater storage are critical elements of Southern California’s water resources strategy and help Metropolitan reduce its reliance on the Delta. Because California experiences dramatic swings in weather and hydrology, storage is important to regulate those swings and mitigate possible supply shortages. Surface and groundwater storage provide a means of storing water during normal and wet years for later use during dry years, when imported supplies are limited. The Metropolitan system, for purposes of meeting demands during times of shortage, regulating system flows, and ensuring system reliability in the event of a system outage, provides over 1,000,000 acre-feet of system storage capacity. Diamond Valley Lake provides 810,000 acre-feet of that storage capacity, effectively doubling Southern California’s previous surface water storage capacity. Other existing imported water storage available to the region consists of Metropolitan’s raw water reservoirs, a share of the SWP’s raw water reservoirs in and near the service area, and the portion of the groundwater basins used for conjunctive‐use storage.
Since the early twentieth century, DWR and Metropolitan have constructed surface water reservoirs to meet emergency, drought/seasonal, and regulatory water needs for Southern California. These reservoirs include Pyramid Lake, Castaic Lake, Elderberry Forebay, Silverwood Lake, Lake Perris, Lake Skinner, Lake Mathews, Live Oak Reservoir, Garvey Reservoir, Palos Verdes Reservoir, Orange County Reservoir, and Metropolitan’s Diamond Valley Lake (DVL).
Metropolitan’s Live Oak and Garvey Reservoirs serve exclusively as regulating facilities and have a combined capacity of approximately 4,100 AF. The remaining reservoirs are primarily used to meet emergency, drought, and seasonal demands, with a total gross storage capacity of 1,760,200 AF. However, not all of this capacity is available to Metropolitan; accounting for dead storage and volumes allocated to other entities, Metropolitan’s effective storage capacity is approximately 1,665,200 AF. Conjunctive use of the aquifers offers another important source of dry year supplies. Unused storage in Southern California groundwater basins can be used to optimize imported water supplies, and the development of groundwater storage projects allows effective management and regulation of the region’s major imported supplies from the Colorado River and SWP. Over the years, Metropolitan has implemented conjunctive use through various programs in the service area; Table 1 lists the groundwater conjunctive use programs active in the region.
Tuesday, June 16, 2026 Reg CC MTG, Page *608
4 Table 1: Contractual Conjunctive Groundwater Projects
Metropolitan Demand Management Programs
Demand management costs are Metropolitan’s expenditures for funding local water resource development programs and water conservation programs. These Demand Management Programs incentivize the development of local water supplies and the conservation of water to reduce the need to import water to deliver to Metropolitan’s member agencies. These programs are implemented below the delivery points between Metropolitan’s and its member agencies’ distribution systems and, as such, do not add any water to Metropolitan’s supplies. Rather, the effect of these downstream programs is to produce a local supply of water for the local agencies and to reduce demands by member agencies for water imported through Metropolitan’s system.
The following discussions outline how Metropolitan funds local resources and conservation programs for the benefit of all of its member agencies and the entire Metropolitan service area.
Notably, the history of demand management by Metropolitan’s member agencies and the local agencies that purchase water from Metropolitan’s members has spanned more than four decades. The significant history of the programs is another reason it would be difficult to attempt to assign a portion of such funding to any one individual member agency.
Local Resources Programs
In 1982, Metropolitan began providing financial incentives to its member agencies to develop new local supplies to assist in meeting the region’s water needs. Because of Metropolitan’s Tuesday, June 16, 2026 Reg CC MTG, Page *609
5 regional distribution system, these programs benefit all member agencies regardless of project location because they help to increase regional water supply reliability, reduce demands for imported water supplies, decrease the burden on Metropolitan’s infrastructure, reduce system costs, and free up conveyance capacity to the benefit of all the agencies that rely on water from Metropolitan.
For example, the Groundwater Replenishment System (GWRS) operated by the Orange County Water District is the world’s largest water purification system for indirect potable reuse. It was funded, in part, by Metropolitan’s member agencies through the Local Resources Program.
Annually, the GWRS produces approximately 130,000 acre-feet of reliable, locally controlled, drought-proof supply of high-quality water to recharge the Orange County Groundwater Basin and protect it from seawater intrusion. The GWRS is a premier example of a regional project that significantly reduced the need to utilize imported water for groundwater replenishment in Metropolitan’s service area, increasing regional and local supply reliability and reducing the region’s reliance on imported supplies, including supplies from the State Water Project.
Metropolitan’s local resource programs have evolved through the years to better assist Metropolitan’s member agencies in increasing local supply production. The following is a description and history of the local supply incentive programs.
Local Projects Program
In 1982, Metropolitan initiated the Local Projects Program (LPP), which provided funding to member agencies to facilitate the development of recycled water projects. Under this approach, Metropolitan contributed a negotiated up-front funding amount to help finance project capital costs. Participating member agencies were obligated to reimburse Metropolitan over time. In 1986, the LPP was revised, changing the up-front funding approach to an incentive-based approach. Metropolitan contributed an amount equal to the avoided State Water Project pumping costs for each acre-foot of recycled water delivered to end-use consumers. This funding incentive was based on the premise that local projects resulted in the reduction of water imported from the Delta and the associated pumping cost. The incentive amount varied from year to year depending on the actual variable power cost paid for State Water Project imports.
In 1990, Metropolitan’s Board increased the LPP contribution to a fixed rate of $154 per acrefoot, which was calculated based on Metropolitan’s avoided capital and operational costs to convey, treat, and distribute water, and included considerations of reliability and service area demands.
Groundwater Recovery Program
The drought of the early 1990s sparked the need to develop additional local water resources, aside from recycled water, to meet regional demand and increase regional water supply reliability. In 1991, Metropolitan conducted the Brackish Groundwater Reclamation Study which determined that large amounts of degraded groundwater in the region were not being utilized.
Subsequently, the Groundwater Recovery Program (GRP) was established to assist the recovery of otherwise unusable groundwater degraded by minerals and other contaminants, Tuesday, June 16, 2026 Reg CC MTG, Page *610
6 provide access to the storage assets of the degraded groundwater, and maintain the quality of groundwater resources by reducing the spread of degraded plumes.
Local Resources Program
In 1995, Metropolitan’s Board adopted the Local Resources Program (LRP), which combined the LPP and GRP into one program. The Board allowed for existing LPP agreements with a fixed incentive rate to convert to the sliding scale up to $250 per acre-foot, similar to GRP incentive terms. Those agreements that were converted to LRP are known as “LRP Conversions.”
Competitive Local Projects Program
In 1998, the Competitive Local Resources Program (Competitive Program) was established.
The Competitive Program encouraged the development of recycled water and recovered groundwater through a process that emphasized cost-efficiency to Metropolitan, timing new production according to regional need while minimizing program administration cost. Under the Competitive Program, agencies requested an incentive rate up to $250 per acre-foot of production over 25 years under a Request for Proposals (RFP) for the development of up to 53,000 acre-feet per year of new water recycling and groundwater recovery projects. In 2003, a second RFP was issued for the development of an additional 65,000 acre-feet of new recycled water and recovered groundwater projects through the LRP.
Seawater Desalination Program
Metropolitan established the Seawater Desalination Program (SDP) in 2001 to provide financial incentives to member agencies for the development of seawater desalination projects. In 2014, seawater desalination projects became eligible for funding under the LRP, and the SDP was ended.
2007 Local Resources Program
In 2006, a task force comprised of member agency representatives was formed to identify and recommend program improvements to the LRP. As a result of the task force process, the 2007 LRP was established with a goal of 174,000 acre-feet per year of additional local water resource development. The new program allowed for an open application process and eliminated the previous competitive process. This program offered sliding scale incentives of up to $250 per acre-foot, calculated annually based on a member agency’s actual local resource project costs exceeding Metropolitan’s prevailing water rate.
2014 Local Resources Program
A series of workgroup meetings with member agencies was held to identify the reasons why there was a lack of new LRP applications coming into the program. The main constraint identified by the member agencies was that the $250 per acre-foot was not providing enough of an incentive for developing new projects due to higher construction costs to meet water quality requirements and to develop the infrastructure to reach end-use consumers located further from treatment plants. As a result, in 2014, the Board authorized an increase in the maximum Tuesday, June 16, 2026 Reg CC MTG, Page *611
7 incentive amount, provided alternative payment structures, included onsite retrofit costs and reimbursable services as part of the LRP, and added eligibility for seawater desalination projects. The current LRP incentive payment options are structured as follows:
Option 1 – Sliding scale incentive up to $340/AF for a 25-year agreement term Option 2 – Sliding scale incentive up to $475/AF for a 15-year agreement term Option 3 – Fixed incentive up to $305/AF for a 25-year agreement term On-site Retrofit Programs
In 2014, Metropolitan’s Board also approved the On-site Retrofit Pilot Program which provided financial incentives to public or private entities toward the cost of small-scale improvements to their existing irrigation and industrial systems to allow connection to existing recycled water pipelines. The On-site Retrofit Pilot Program helped reduce recycled water retrofit costs to the end-use consumer which is a key constraint that limited recycled water LRP projects from reaching full production capacity. The program incentive was equal to the actual eligible costs of the on-site retrofit, or $975 per acre-foot of up-front cost, which equates to $195 per acre-foot for an estimated five years of water savings ($195/AF x 5 years) multiplied by the average annual water use in previous three years, whichever is less. The Pilot Program lasted two years and was successful in meeting its goal of accelerating the use of recycled water.
In 2016, Metropolitan’s Board authorized a permanent On-site Retrofit Program (ORP). This program encompassed lessons learned from the Pilot Program and feedback from member agencies to make the program more streamlined and improve its efficiency. With an annual budget of $3 million, as of fiscal year 2024/25 the program has funded 550 sites, replacing 15,360 acre-feet of potable water with recycled water per year.
Stormwater Pilot Programs
In 2019, Metropolitan’s Board authorized both the Stormwater for Direct Use Pilot Program and a Stormwater for Recharge Pilot Program to study the feasibility of reusing stormwater to help meet regional demands in Southern California. These pilot programs are intended to encourage the development, monitoring, and study of new and existing stormwater projects by providing financial incentives for their construction/retrofit and monitoring/reporting costs. These pilot programs will help evaluate the potential benefits delivered by stormwater capture projects and provide a basis for potential future funding approaches. Metropolitan’s Board authorized a total of $12.5 million for the stormwater pilot programs ($5 million for the District Use Pilot and $7.5 million for the Recharge Pilot).
Current Status and Results of Metropolitan’s Local Resource Programs Today, nearly one-half of the total recycled water and groundwater recovery production in the region has been developed with an incentive from one or more of Metropolitan’s local resource programs. During fiscal year 2025, Metropolitan provided about $5 million for production of 40,000 acre-feet of recycled water for non-potable and indirect potable uses. Metropolitan provided about $8 million to support projects that produced about 53,000 acre-feet of recovered Tuesday, June 16, 2026 Reg CC MTG, Page *612
8 groundwater for municipal use. Since 1982, Metropolitan has invested $771 million to fund 90 recycled water projects and 28 groundwater recovery projects that have produced a cumulative total of about 4.6 million acre-feet.
Conservation Programs
Metropolitan’s regional conservation programs and approaches have a long history. Decades ago, Metropolitan recognized that demand management at the consumer level would be an important part of balancing regional supplies and demands. Water conservation efforts were seen as a way to reduce the need for imported supplies and offset the need to transport or store additional water into or within the Metropolitan service area. The actual conservation of water takes place at the retail consumer level. Regional conservation approaches have proven to be effective at reaching retail consumers throughout Metropolitan’s service area and successfully implementing water saving devices, programs and practices. Through the pooling of funding by Metropolitan’s member agencies, Metropolitan is able to engage in regional campaigns with wide-reaching impact. Regional investments in demand management programs, of which conservation is a key part along with local supply programs, benefit all member agencies regardless of project location. These programs help to increase regional water supply reliability, reduce demands for imported water supplies, decrease the burden on Metropolitan’s infrastructure, reduce system costs, and free up conveyance capacity to the benefit of all member agencies.
Incentive-Based Conservation Programs
Conservation Credits Program
In 1988, Metropolitan’s Board approved the Water Conservation Credits Program (Credits Program). The Credits Program is similar in concept to the Local Projects Program (LPP). The purpose of the Credits Program is to encourage local water agencies to implement effective water conservation projects through the use of financial incentives. The Credits Program provides financial assistance for water conservation projects that reduce demands on Metropolitan’s imported water supplies and require Metropolitan’s assistance to be financially feasible.
Initially, the Credits Program provided 50 percent of a member agency’s program cost, up to a maximum of $75 per acre-foot of estimated water savings. The $75 Base Conservation Rate was established based Metropolitan’s avoided cost of pumping SWP supplies. The Base Conservation Rate has been revisited by Metropolitan’s Board and revised twice since 1988, from $75 to $154 per acre-foot in 1990 and from $154 to $195 per acre-foot in 2005.
Metropolitan’s Credits Program investment in fiscal year 2025 was $22 million.
Member Agency Administered Program
Some member agencies also have unique programs within their service areas that provide local rebates that may differ from Metropolitan’s regional program. Metropolitan continues to support these local efforts through a member agency administered funding program that adheres to the Tuesday, June 16, 2026 Reg CC MTG, Page *613
9 same funding guidelines as the Credits Program. The Member Agency Administered Program allows member agencies to receive funding for local conservation efforts that supplement, but do not duplicate, the rebates offered through Metropolitan’s regional rebate program.
Water Savings Incentive Program
There are numerous commercial entities and industries within Metropolitan’s service area that pursue unique savings opportunities that do not fall within the general rebate programs that Metropolitan provides. In 2012, Metropolitan designed the Water Savings Incentive Program (WSIP) to target these unique commercial and industrial projects. In addition to rebates for devices, under this program, Metropolitan provides financial incentives to businesses and industries that created their own custom water efficiency projects. Qualifying custom projects can receive funding for permanent water efficiency changes that result in reduced potable demand.
Non-Incentive Conservation Programs
In addition to its incentive-based conservation programs, Metropolitan also undertakes additional efforts throughout its service area that help achieve water savings without the use of rebates. Metropolitan’s non-incentive conservation efforts include:
residential and professional water efficient landscape training classes water audits for large landscapes
research, development and studies of new water saving technologies advertising and outreach campaigns
community outreach and education programs
advocacy for legislation, codes, and standards that lead to increased water savings Current Status and Results of Metropolitan’s Conservation Programs Since 1990, Metropolitan has invested $976 million in conservation rebates that have resulted in a cumulative savings of 4.32 million acre-feet of water as of fiscal year 2025. These investments include $414 million in turf removal which resulted in 175 million square feet of lawn turf removed. During fiscal year 2025, 1.12 million acre-feet of water is estimated to have been conserved. This annual total includes Metropolitan’s Conservation Credits Program; code-based conservation achieved through Metropolitan-sponsored legislation; building plumbing codes and ordinances; reduced consumption resulting from changes in water pricing; and pre-1990 device retrofits.
Infeasibility of Accounting Regional Investments in Reduced Reliance Below the Regional Level
The accounting of regional investments that contribute to reduced reliance on supplies from the Delta watershed is straightforward to calculate and report at the regional aggregate level.
However, any similar accounting is infeasible for the individual member agencies or their Tuesday, June 16, 2026 Reg CC MTG, Page *614
10 customers. As described above, the region (through Metropolitan) makes significant investments in projects, programs and other resources that reduce reliance on the Delta. In fact, all of Metropolitan’s investments in Colorado River supplies, groundwater and surface storage, local resources development and demand management measures that reduce reliance on the Delta are collectively funded by revenues generated from the member agencies through rates and charges.
Metropolitan’s revenues cannot be matched to the demands or supply production history of an individual agency, or consistently across the agencies within the service area. Each project or program funded by the region has a different online date, useful life, incentive rate and structure, and production schedule. It is infeasible to account for all these things over the life of each project or program and provide a nexus to each member agency’s contributions to Metropolitan’s revenue stream over time. Accounting at the regional level allows for the incorporation of the local supplies and water use efficiency programs done by member agencies and their customers through both the regional programs and through their own specific local programs. As shown above, despite the infeasibility of accounting reduced Delta reliance below the regional level, Metropolitan’s member agencies and their customers have together made substantial contributions to the region’s reduced reliance.
References
https://mwdh2o.legistar.com/View.ashx?M=F&ID=14909541&GUID=74F23E74-C89B-4C8DACA8-764CBA3DFA63 https://www-admin.mwdh2o.com/media/soibemtf/2026-annual-achievement-report.pdf https://d1q0afiq12ywwq.cloudfront.net/media/5ralzxit/public-review-draft-february-2026- uwmp.pdf
https://mwdh2o.legistar.com/View.ashx?M=F&ID=10371591&GUID=1A060A60-2A18-4EA1- BB1B-3624C07C4C61
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City of Lomita
2025 Urban Water Management Plan
Draft
Appendix E Notifications
E
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City of Lomita
2025 Urban Water Management Plan
Draft
Appendix F Adopted Resolutions
F
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