Manteca City Council
May 12, 2026

Drop Down
List
(yes/no)
If Yes, Supplier Name
Groundwater Well
Expansion
No
Assumes completion of two new wells including Well 30
to increase pumping capacity.(a) Potable 2026-2030 All Year Types 0 Groundwater Well
Expansion
No
Assumes completion of four new wells to increase
pumping capacity.(a) Potable 2030-2045 All Year Types 0 Nick C. DeGroot WTP
Phase 2 Yes
SSJID and Cities of
Tracy, Lathrop, and
Escalon
Assumes 2040 completion of Phase 2 WTP expansion Potable 2040 All Year Types 7,000 RWFMP Phase 1-4 Yes City of Lathrop
Assumes completion of RWFMP Phase 1-4 to expand
the City's recycled water system and maximize recycled
water use within the City's service area.(b)
Non-Potable Funding Dependent All Year Types 9,492
Planned for Use in
Year Type
Drop Down List
NOTES:
(a) Additional wells will increase the City's ability to pump groundwater to meet peak demands, but will not increase the City's available groundwater supply. The City's existing wells have sufficient capacity to access the City's full sustainable yield.
(b) Expected increase in recycled water supply for use within the City's service area is equivalent to the available recycled water supply in 2040 (11,000 AFY) minus the actual 2025 recycled water use volume.

Submittal Table 6-7 Retail: Expected Future Water Supply Projects or Programs Water Code Section 10631(f)
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
ATTACHMENT 3
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 Potable 8,409 11,500
Groundwater (not desalinated) Potable 6,736 10,737
Recycled Water Secondary Treated Non-Potable 921 11,000 Recycled Water Tertiary Treated Non-Potable 587 (a)
15,145 22,237
1,508 11,000
16,653 33,237
Submittal Table 6-8 Retail: Water Supplies — Actual
Water Code Section 10631 (b)
2025
NOTES:
(a) Total entitlement for recycled water is a single value for both secondary treated and tertiary treated water.

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.

Total
Subtotal Potable
Subtotal Non-Potable
Additional Description
(as needed)
ATTACHMENT 3
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 SSJID(a) Potable 11,500 11,500 11,500 11,500 18,500 18,500 18,500 18,500 18,500 18,500 Groundwater (not
desalinated) ESJ Subbasin(b) Potable 11,111 11,111 12,757 12,757 14,402 14,402 16,050 16,050 16,050 16,050 Recycled Water Tertiary Treated(c) Non-Potable 1,508 11,000 1,509 11,000 1,510 11,000 1,512 11,000 1,514 11,000 22,611 22,611 24,257 24,257 32,902 32,902 34,550 34,550 34,550 34,550 1,508 11,000 1,509 11,000 1,510 11,000 1,512 11,000 1,514 11,000 24,119 33,611 25,766 35,257 34,412 43,902 36,062 45,550 36,064 45,550 2050 (opt)
Total
NOTES:
(a) Purchased water reasonably available volume is based on the City’s Water Supply Agreement with SSJID. Phase 1 allocation (11,500 AFY) is assumed available through 2035, with Phase 2 expansion (total 18,500 AFY) assumed available by 2040 consistent with current planning assumptions. (b) Projected groundwater supply for 2050 is assumed to be consistent to supply in 2045, consistent with the assumptions in Chapter 4 of this plan. (c) Reasonably available volume for recycled water is assumed to be equivalent to projected recycled water demands within the City’s water service area (DWR Table 6-4). The total safe yield of recycled water is assumed to be equivalent to the available recycled water supply capacity of the WQCF (11,000 AFY) as identified in the City’s 2023 RWFMP. 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.

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 NonPotable
(after treatment if
treated)
(OPTIONAL)
Drop Down list
ATTACHMENT 3
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 1/2/2025
End Date of Reporting Period 12/31/2025
Is upstream embedded energy in the values reported? No
Units of Measure for Water AF
Total Utility
See DWR NOTES
Hydropower Net Utility
6,736 - 6,736
3,558,494 - 3,558,494
1,621 - 1,621
Quantity of Self-Generated Renewable Energy
0 kWh
Data Quality (Estimate, Metered Data, Combination of Estimates and Metered Data) Metered Data
Data Quality Narrative:

Narrative:

Volume of Water Entering Process
Energy Consumed (kWh)
Energy Intensity (kWh/vol. converted to MG)
Optional Submittal Table O-1B: Recommended Energy Reporting - SINGLE DELIVERY PRODUCT - TOTAL UTILITY

APPROACH
Monthly electrical energy data was provided for groundwater wells and storage tank pump stations.

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:

The energy data provided summarizes the monthly energy consumption for operating the City's groundwater wells and storage tanks. Energy use for water purchased from SSJID is not under the City's operational control, and therefore is not included in this table. Volume for purchased water from SSJID is also not included. Recycled water energy use is in Table O-2.

ATTACHMENT 3
Start Date of Reporting Period 1/2/2025
End Date of Reporting Period 12/31/2025
Is upstream embedded energy in the values reported? No
Units of Measure for Water AF Collection /
Conveyance
Treatment
Discharge /
Distribution Total
9,314 9,314 7,800 26,428
372,900 10,520,943 0 10,893,843
122.9 3,466.6 0.0 1,265.0
0 1,514 1,514 3028
0 0 0 0

0.0 0.0 0.0 0.0
Volume of Wastewater Entering Process (volume units selected above) Wastewater Energy Consumed (kWh)
Volume of Recycled Water Entering Process (volume units selected above) Recycled Water Energy Consumed (kWh)
Wastewater Energy Intensity (kWh/volume converted to MG) Recycled Water Energy Intensity (kWh/volume converted to MG) Optional Submittal Table O-2: Recommended Energy Reporting - WASTEWATER AND RECYCLED WATER Only for Water Delivery Products Under the Urban Water
Supplier's Operational Control
Water Management Process
ATTACHMENT 3
% of Average Supply
Average Year 100%
Single-Dry Year
Consecutive Dry Years 1st Year
Consecutive Dry Years 2nd Year
Consecutive Dry Years 3rd Year
Consecutive Dry Years 4th Year
Consecutive Dry Years 5th Year
NOTES:

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.

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: See Table 7-3 within Chapter 7.

Volume Available (AF)
Quantification of available supplies is provided in this table as either volume only, percent only, or both.

ATTACHMENT 3
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals
(autofill from Submittal Table 6-
9 R)
24,119 25,766 34,412 36,062 36,064
Use totals
(autofill from Submittal Table 4-
2 R)
21,625 24,186 27,072 30,326 30,328
Surplus/(shortfall) 2,494 1,580 7,340 5,736 5,736
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.

ATTACHMENT 3
Supply totals 23,185 25,749 30,504 33,233 33,235
Use totals 21,625 24,186 27,072 30,326 30,328
Surplus/(shortfall) 1,560 1,563 3,432 2,907 2,907
WSCP - supply
augmentation benefit
WSCP - use reduction
savings benefit
Revised Surplus/(shortfall)
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)
DWR NOTES : Units of measure (AF, CCF, MG) must remain consistent throughout the UWMP as reported in Submittal Table 2-3.

NOTES
2050 (AF)
2030 (AF) 2035 (AF) 2040 (AF) 2045 (AF) 2050 (AF)
Supply totals 24,119 25,766 34,412 36,062 36,064
Use totals 21,625 24,186 27,072 30,326 30,328
Surplus/(shortfall) 2,494 1,580 7,340 5,736 5,736
Use totals 22,137 24,763 27,722 30,326 30,328
Surplus/(shortfall) 2,311 1,332 7,020 5,736 5,736
Use totals 22,649 25,340 28,373 30,326 30,328
Surplus/(shortfall) 1,194 1,067 2,790 2,907 2,907
Use totals 23,161 25,917 29,023 30,326 30,328
Surplus/(shortfall) 1,012 819 2,470 2,907 2,907
Use totals 23,673 26,494 29,674 30,326 30,328
Surplus/(shortfall) 1,763 588 6,056 5,736 5,736
NOTES:

First year
OPTIONAL WSCP Actions
Second year
Third year
Fifth year
OPTIONAL Planned WSCP Actions
OPTIONAL Planned WSCP Actions
OPTIONAL Planned WSCP Actions
Fourth year
Submittal Table 7-4 Retail: Multiple Dry Years Supply and Use Comparison Water Code Section 10635(a)
OPTIONAL Planned WSCP Actions
ATTACHMENT 3
2026 Total
Total Water Use (AF) 16,140
Total Supplies (AF) 22,312
Surplus/Shortfall w/o WSCP Action 6,172
Total Water Use (AF) 17,135
Total Supplies (AF) 22,387
Surplus/Shortfall w/o WSCP Action 5,252
Total Water Use (AF) 18,127
Total Supplies (AF) 20,610
Surplus/Shortfall w/o WSCP Action 2,483
Total Water Use (AF) 19,123
Total Supplies (AF) 20,685
Surplus/Shortfall w/o WSCP Action 1,562
Total Water Use (AF) 20,117
Total Supplies (AF) 22,611
Surplus/Shortfall w/o WSCP Action 2,494
NOTES:

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) City Name 60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
City of Manteca Yes Yes
County Name
Drop Down List
60 Day Notice
Drop Down (yes/no)
Notice of Public
Hearing
Drop Down (yes/no)
San Joaquin County Yes Yes
Submittal Table 10-1 Retail: Notification to Cities and Counties Water Code Section 10621(b) and 10642
NOTES:

ATTACHMENT 3
DWR 2025 Urban Water Management Plan Checklist
Appendix C
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-1 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
x Chapter 1 10615 A plan shall describe and evaluate sources of supply, reasonable and practical efficient uses, reclamation
and demand management activities.

Introduction and
Overview
n/a Executive Summary
x 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.

Plan Preparation n/a Executive Summary
x Section 2.1 10620(b) Every person that becomes a Supplier shall adopt UWMP within one year after it has become a Supplier.

Plan Preparation n/a n/a
x 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.

Plan Preparation 2-1 Section 2.1
x 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.

Plan Preparation 2-2 Section 2.2
x 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.

Plan Preparation 2-3 Section 2.3
x 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.

Plan Preparation n/a Section 2.4 and
Appendix D
x 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
Plan Preparation n/a Section 2.4.2
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-2 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
management agencies, and relevant public agencies,
to the extent practicable.
x 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.

Plan Preparation 2-4 R Section 2.4.1
x Chapter 3.0 10631(a) Describe the Supplier service area. System Description n/a Sections 3.1 and 3.2 x Section 3.3 10631(a) Describe the climate of the Supplier’s service area. System Description n/a Section 3.3 x Section 3.4.1 10631(a) Provide the current and projected service area populations for 2030, 2035, 2040, 2045 and
optionally 2050.

System Description 3-1 Section 3.4.1
x Section 3.4.2 10631(a) Describe other social, economic, and demographic factors affecting the Supplier’s water management
planning.

System Description n/a Section 3.4.2
x 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.

System Description
and Baselines
n/a Section 3.5
x 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.

System Water Use 4-1 and 4-2 Section 4.2
x Section 4.3.1 10631(d)(3)(A) Report the distribution system water loss for each of the five years preceding the plan update.

System Water Use 4-5 Section 4.5
x Section 4.3.2 10631(d)(3)(C) Retail Suppliers shall provide data to show the distribution loss standards were met.

System Water Use 4-6 Section 4.5
x 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.

System Water Use 4-3 Section 4.4
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-3 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
x 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.

System Water Use 4-3 Section 4.3
x Section 4.2.5.3 10631(d)(4)(B) Provide citations of codes, standards, ordinances, or plans used to make water use projections.

System Water Use 4-3 Section 4.3
x 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.

System Water Use 4-3 Section 4.3
x Section 4.2.5.6 10635(b) Demands under climate change considerations must be included as part of the drought risk assessment.

System Water Use n/a Section 4.6
x 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.

Baselines and Targets 5-1 Section 5.2
x 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.

System Supplies n/a Sections 6.1, 6.2,
and 6.9
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-4 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
x 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.

System Supplies n/a Sections 6.9 and

6.10; Chapter 7
x 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.

Water Supplies and
Recycled Water
6-1 Section 6.2
x 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.

System Supplies n/a Section 6.2
x Section 6.2.2 10631(b)(4)(B) Describe the groundwater basin. System Supplies n/a Section 6.2 x 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.

System Supplies n/a Section 6.2.1
x 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…
Water Supplies and
Recycled Water
n/a Section 6.2.1
x Section 6.2.2 10631(b)(4)(B) For unadjudicated basins… describe efforts by the Supplier to coordinate with sustainability or
Water Supplies and
Recycled Water
n/a Section 6.2.1
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-5 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
groundwater agencies to achieve sustainable
groundwater conditions.
x 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.

System Supplies 6-1 Section 6.2.2
x 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.

System Supplies 6-9 Sections 6.2.3 and

6.9 x 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.

System Supplies 6-8 and 6-9 Section 6.9
x Section 6.2.7 10631(c) Describe the opportunities for exchanges or transfers of water on a short-term or long-term basis.

System Supplies n/a Section 6.7
x 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.

System Supplies
(Recycled Water)
6-2 Section 6.5.2
x 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.

System Supplies
(Recycled Water)
6-3 Section 6.5.2
x Section 6.2.5 10633(c) Describe the recycled water currently being used in the Supplier's service area.

System Supplies
(Recycled Water)
6-4 Sections 6.5.3 and

6.5.4 x 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 thoseuses.

System Supplies
(Recycled Water)
6-4 Section 6.5.4
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-6 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
x 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.

System Supplies
(Recycled Water)
6-4 and 6-5 Section 6.5.4
x 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.

System Supplies
(Recycled Water)
6-6 Section 6.5.4
x Section 6.2.5 10633(g) Provide a plan for optimizing the use of recycled water in the Supplier's service area.

System Supplies
(Recycled Water)
n/a Section 6.5
x Section 6.2.6 10631(g) Describe desalinated water project opportunities for long-term supply.

System Supplies 6-7 Section 6.6
x 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.

System Supplies 6-7 Section 6.8
x 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.

System Suppliers,
Energy Intensity
O-1Band O-2 Section 6.11
x 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.

Water Supply
Reliability Assessment
n/a Section 7.1.1
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-7 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
x 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.

Water Supply
Reliability Assessment
7-2, 7-3,
and 7-4
Section 7.1.3
x 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.

Water Supply
Reliability Assessment
n/a Section 7.2
x 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.

Water Supply
Reliability Assessment
n/a Section 7.3
x 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.

Water Supply
Reliability Assessment
n/a Section 7.3.1
x Section 7.3 10635(b)(2) Include a determination of the reliability of each source of supply under a variety of water shortage
conditions.

Water Supply
Reliability Assessment
n/a Section 7.3.2
x 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.

Water Supply
Reliability Assessment
7-5 Section 7.3.3
x 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.

Water Supply
Reliability Assessment
n/a Section 7.1.1
x Chapter 8 10632(a) Provide a water shortage contingency plan (WSCP) with specified elements below.

Water Shortage
Contingency Planning
n/a Appendix F
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-8 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
x Chapter 8 10632(a)(1) Provide an analysis of water supply reliability (from Guidebook Chapter 7) in the WSCP.

Water Shortage
Contingency Planning
n/a Appendix F: Section
2 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section

3.1 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
3 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
4 x 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.

Water Shortage
Contingency Planning
8-1 Appendix F: Section
4 x Section 8.4 10632(a)(4)(A) Suppliers with WSCPs that align with the defined shortage levels must specify locally appropriate supply augmentation actions.

Water Shortage
Contingency Planning
8-2 Appendix F: Section

5.3 x Section 8.4 10632(a)(4)(B) Specify locally appropriate demand reduction actions to adequately respond to shortages.

Water Shortage
Contingency Planning
8-3 Appendix F: Section

5.1 x Section 8.4 10632(a)(4)(C) Specify locally appropriate operational changes. Water Shortage Contingency Planning
8-2 Appendix F: Section

5.4 x Section 8.4 10632(a)(4)(D) Specify additional mandatory prohibitions against specific water use practices that are in addition to
Water Shortage
Contingency Planning
8-3 Appendix F: Section

5.2 ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-9 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
State-mandated prohibitions are appropriate to local
conditions.
x 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.

Water Shortage
Contingency Planning
8-2 and 8-3 Appendix F:

Sections 5.1and 5.3
x Section 8.4.6 10632.5 The UWMP shall include a seismic risk assessment and mitigation plan.

Water Shortage
Contingency Plan
n/a Section 8.4
x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
6 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
6 x Section 8.6 10632(a)(6) Retail Supplier must describe how it will ensure compliance with and enforce provisions of the WSCP.

Water Shortage
Contingency Planning
n/a Appendix F: Section
7 x Section 8.7 10632(a)(7)(A) Describe the legal authority that empowers the Supplier to enforce shortage response actions.

Water Shortage
Contingency Planning
n/a Appendix F: Section
8 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
8 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
8 x Section 8.8 10632(a)(8)(A) Describe the potential revenue reductions and expense increases associated with activated shortage
response actions.

Water Shortage
Contingency Planning
n/a Appendix F: Section
9 ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-10 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
9 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
9 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
10 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section
11 x 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.

Water Shortage
Contingency Planning
n/a Appendix F: Section

5.2.1 x 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.

Water Shortage
Contingency Planning
n/a Section 8.3
x 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.

Demand Management
Measures
n/a Section 9.1
x Chapter 10 10608.26(a) Retail Suppliers shall conduct a public hearing to discuss adoption, implementation, and economic
Plan Adoption,
Submittal, and
Implementation
n/a Section 10.2
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-11 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
impact of water use targets (recommended to discuss
compliance).
x 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.

Plan Adoption,
Submittal, and
Implementation
10-1 Section 10.2
x Section 10.4 10621(f) Each urban water Supplier shall update and submit its 2025 plan to DWR by July 1, 2026.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.4
x 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.

Plan Adoption,
Submittal, and
Implementation
n/a Appendix D
x 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.

Plan Adoption,
Submittal, and
Implementation
10-1 Section 10.2.1
x Section 10.3.2 10642 Provide supporting documentation that the UWMP and WSCP has been adopted as prepared or modified.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.3.2;
Appendix I
x Section 10.4 10644(a) Provide supporting documentation that the Supplier has submitted their UWMP to the California State
Library.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.4
x 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.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.4
x 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.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.4
ATTACHMENT 3
Appendix C
UWMP Checklist
N-C-265-60-25-15-WP
C-12 City of Manteca
2025 Urban Water Management Plan
April 2026
Retail
x = required
2025
Guidebook Location
Water Code
Section
Summary as
Applies to UWMP Subject
Relevant
Submittal
Table
2025 UWMP
Location
x Section 10.7.2 10644(b) If revised, submit a copy of the WSCP to DWR within 30 days of adoption.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.7
x 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.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.5
x 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.

Plan Adoption,
Submittal, and
Implementation
n/a Section 10.5
x 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.

Plan Adoption,
Submittal, and
Implementation
n/a n/a
ATTACHMENT 3
Agency and Public Notices
Appendix D
ATTACHMENT 3
ATTACHMENT 3
Distribution System Water Loss Audits
Appendix E
ATTACHMENT 3
Water Audit Report for:

Reporting Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR Master Meter and Supply Error Adjustments
WATER SUPPLIED Pcnt: Value:

Volume from own sources: 6 1,967.506 MG/Yr 8 MG/Yr
Water imported: 3 3,012.327 MG/Yr 3 MG/Yr
Water exported: n/a MG/Yr MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 4,979.833 MG/Yr Enter positive % or value for over-registration .

AUTHORIZED CONSUMPTION
Billed metered: 8 4,618.755 MG/Yr
Billed unmetered: n/a MG/Yr
Unbilled metered: 4 116.400 MG/Yr Pcnt: Value:

Unbilled unmetered: 5 12.450 MG/Yr 1.25% 24061 MG/Yr
AUTHORIZED CONSUMPTION: 4,747.605 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 232.228 MG/Yr Apparent Losses Pcnt: Value:

Unauthorized consumption: 12.450 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 1 47.830 MG/Yr 1.00% MG/Yr Systematic data handling errors: 5 11.547 MG/Yr 0.25% MG/Yr Apparent Losses: 71.826 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 160.402 MG/Yr WATER LOSSES: 232.228 MG/Yr

NON-REVENUE WATER
NON-REVENUE WATER: 361.078 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered

SYSTEM DATA
Length of mains: 10 322.0 miles
Number of active AND inactive service connections: 8 23,436 Service connection density: 73 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 7 55.0 psi

COST DATA
Total annual cost of operating water system: 10 $16,423,687 $/Year Customer retail unit cost (applied to Apparent Losses): 5 $1.35 Variable production cost (applied to Real Losses): 9 $1,293.00 $/Million gallons WATER AUDIT DATA VALIDITY SCORE:

PRIORITY AREAS FOR ATTENTION:
1: Water imported
2: Customer metering inaccuracies
3: Volume from own sources
AWWA Free Water Audit Software:

Reporting Worksheet

12.450
2020 1/2020 - 12/2020
City of Manteca (CA3910005)
<----------- Enter grading in column 'E' and 'J' ----------> Based on the information provided, audit accuracy can be improved by addressing the following components:
$/100 cubic feet (ccf)
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed

11.547
*** YOUR SCORE IS: 55 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score Average length of customer service line has been set to zero and a data grading score of 10 has been applied Are customer meters typically located at the curbstop or property line? ?
?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades ?
?
?
?
?
?
(length of service line, beyond the property
boundary, that is the responsibility of the utility)
Use buttons to select percentage of water
supplied OR
value Click here: ?
for help using option
?
?
?
?
+
+ Click to add a comment WAS v5.0 +
+
+
+
+
+
American Water Works Association. Copyright © 2014, All Rights Reserved. ? ?
? +
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.

AWWA Free Water Audit Software v5.0 Reporting Worksheet 1 ATTACHMENT 3
Water Audit Report for:

Reporting Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR Master Meter and Supply Error Adjustments
WATER SUPPLIED Pcnt: Value:

Volume from own sources: 7 2,194.540 MG/Yr 4 0.00% MG/Yr Water imported: 6 2,513.764 MG/Yr 4 0.00% MG/Yr
Water exported: n/a 0.000 MG/Yr MG/Yr
Enter negative % or value for under-registration
WATER SUPPLIED: 4,708.304 MG/Yr Enter positive % or value for over-registration .

AUTHORIZED CONSUMPTION
Billed metered: 8 4,262.276 MG/Yr
Billed unmetered: n/a MG/Yr
Unbilled metered: 10 39.227 MG/Yr Pcnt: Value:

Unbilled unmetered: 5 11.771 MG/Yr 1.25% 24061 MG/Yr
AUTHORIZED CONSUMPTION: 4,313.274 MG/Yr
WATER LOSSES (Water Supplied - Authorized Consumption) 395.030 MG/Yr Apparent Losses Pcnt: Value:

Unauthorized consumption: 11.771 MG/Yr 0.25% MG/Yr
Customer metering inaccuracies: 3 43.450 MG/Yr 1.00% MG/Yr Systematic data handling errors: 5 10.656 MG/Yr 0.25% MG/Yr Apparent Losses: 65.876 MG/Yr
Real Losses (Current Annual Real Losses or CARL)
Real Losses = Water Losses - Apparent Losses: 329.154 MG/Yr WATER LOSSES: 395.030 MG/Yr

NON-REVENUE WATER
NON-REVENUE WATER: 446.028 MG/Yr
= Water Losses + Unbilled Metered + Unbilled Unmetered

SYSTEM DATA
Length of mains: 10 338.0 miles
Number of active AND inactive service connections: 8 26,428 Service connection density: 78 conn./mile main
Yes
Average length of customer service line: ft
Average operating pressure: 7 55.0 psi

COST DATA
Total annual cost of operating water system: 10 $20,446,376 $/Year Customer retail unit cost (applied to Apparent Losses): 5 $1.35 Variable production cost (applied to Real Losses): 9 $1,616.22 $/Million gallons WATER AUDIT DATA VALIDITY SCORE:

PRIORITY AREAS FOR ATTENTION:
1: Water imported
2: Customer metering inaccuracies
3: Volume from own sources
Based on the information provided, audit accuracy can be improved by addressing the following components:
$/100 cubic feet (ccf)
Default option selected for unauthorized consumption - a grading of 5 is applied but not displayed

10.656
*** YOUR SCORE IS: 69 out of 100 ***
A weighted scale for the components of consumption and water loss is included in the calculation of the Water Audit Data Validity Score Average length of customer service line has been set to zero and a data grading score of 10 has been applied Are customer meters typically located at the curbstop or property line? AWWA Free Water Audit Software:

Reporting Worksheet

11.771
2021 1/2021 - 12/2021
City of Manteca (CA3910005)
<----------- Enter grading in column 'E' and 'J' ----------> ? ?
?
?
?
? Click to access definition
?
?
?
?
?
?
Please enter data in the white cells below. Where available, metered values should be used; if metered values are unavailable please estimate a value. Indicate your confidence in the accuracy of the input data by grading each component (n/a or 1-10) using the drop-down list to the left of the input cell. Hover the mouse over the cell to obtain a description of the grades ?
?
?
?
?
?
(length of service line, beyond the property
boundary, that is the responsibility of the utility)
Use buttons to select percentage of water
supplied OR
value Click here: ?
for help using option
?
?
?
?
+
+ Click to add a comment WAS v5.0 +
+
+
+
+
+
American Water Works Association. Copyright © 2014, All Rights Reserved. ? ?
? +
+
+
+
+
+
+
+
+
+
+
+
+ Use Customer Retail Unit Cost to value real losses
?
To select the correct data grading for each input, determine the highest grade where the utility meets or exceeds all criteria for that grade and all grades below it.

AWWA Free Water Audit Software v5.0 Reporting Worksheet 1 ATTACHMENT 3
Water Audit Report for:

Audit Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR WATER SUPPLIED choose entry option:

VOS Volume from Own Sources: n g 6 2,223.107 MG/Yr n g 8 volume MG/Yr under-registration VOSEA WI Water Imported: n g 3 2,598.523 MG/Yr n g 3 volume MG/Yr select….. WIEA WE Water Exported: n g n/a 0.000 MG/Yr n g n/a percent MG/Yr select….. WEEA 4,821.630 MG/Yr
.

AUTHORIZED CONSUMPTION
BMAC Billed Metered: n g 7 4,617.752 MG/Yr
BUAC Billed Unmetered: n g n/a 0.000 MG/Yr
UMAC Unbilled Metered: n g n/a 0.000 MG/Yr choose entry option:

UUAC Unbilled Unmetered: n g 3 11.544 MG/Yr 0.25% default MG/Yr 24061 Default option selected for Unbilled Unmetered, with automatic data grading of 3 4,629.296 MG/Yr
WATER LOSSES 192.334 MG/Yr
Apparent Losses
Default option selected for Systematic Data Handling Errors, with automatic data grading of 3 choose entry option:

SDHE Systematic Data Handling Errors: n g 3 11.544 MG/Yr 0.25% default MG/Yr CMI Customer Metering Inaccuracies: n g 2 46.644 MG/Yr 1.00% percent MG/Yr under-registration UC Unauthorized Consumption: n g 3 11.544 MG/Yr 0.25% default MG/Yr Default option selected for Unauthorized Consumption, with automatic data grading of 3

69.733 MG/Yr
Real Losses
122.601 MG/Yr
192.334 MG/Yr

NON-REVENUE WATER
203.878 MG/Yr

SYSTEM DATA
Lm Length of mains: n g 7 346.0 miles (including fire hydrant lead lengths) Nc Number of service connections: n g 5 24,800 (active and inactive) Service connection density: 72 conn./mile main
Yes
Lp Average length of (private) customer service line: n g 10 ft (average distance between property line and meter) AOP Average Operating Pressure: n g 7 55.0 psi

COST DATA
CRUC Customer Retail Unit Charge: n g 1 $1.35
VPC Variable Production Cost: n g 3 $234.43 $/Million gallons $/yr (optional input) WATER AUDIT DATA VALIDITY TIER:
go to
dashboard
PRIORITY AREAS FOR ATTENTION TO IMPROVE DATA VALIDITY: KEY PERFORMANCE INDICATOR TARGETS:

Based on the information provided, audit reliability can be most improved by addressing the following components: OPTIONAL: If targets exist for the operational performance indicators, they can be input below:
1: Water Imported (WI) Unit Total Losses: gal/conn/day
2: Volume from Own Sources (VOS) Unit Apparent Losses: 6.8 gal/conn/day 3: Customer Metering Inaccuracies (CMI) Unit Real LossesA : 14.0 gal/conn/day
Unit Real LossesB: gal/mile/day
If entered above by user, targets will display on KPI gauges (see Dashboard) go to start page
NON-REVENUE WATER:

If entering an
Error Adjustment,
select under- or overregistration
WATER SUPPLIED:

AUTHORIZED CONSUMPTION:

Apparent Losses:

Average length of customer service line has been set to zero and a data grading of 10 has been applied A weighted scale for the components of supply, consumption and water loss is included in the calculation of the Water Audit Data Validity Score *** The Water Audit Data Validity Score is in Tier II (26-50). See Dashboard tab for additional outputs. *** $/100 cubic feet (ccf)
$17,185,500
Total Annual Operating Cost
Are customer meters typically located at the curbstop/property line? AWWA Free Water Audit Software:

Worksheet
City of Manteca
Jan 01 2022 - Dec 31 2022
Water Supplied Error Adjustments
2022 Calendar
Real Losses:

WATER LOSSES:

Click 'g' to determine data validity grade Click 'n' to add notes FWAS v6.0 American Water Works Association. Copyright © 2020, All Rights Reserved.

To access definitions, click the input name
To edit water system info:

AWWA Free Water Audit Software v6.0 Worksheet 1
ATTACHMENT 3
Water Audit Report for:

Audit Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR WATER SUPPLIED choose entry option:

VOS Volume from Own Sources: n g 6 1,842.954 MG/Yr n g 8 percent MG/Yr under-registration VOSEA WI Water Imported: n g 6 2,680.296 MG/Yr n g 4 percent MG/Yr select….. WIEA WE Water Exported: n g n/a 0.000 MG/Yr n g n/a percent MG/Yr select….. WEEA 4,523.250 MG/Yr
.

AUTHORIZED CONSUMPTION
BMAC Billed Metered: n g 8 4,268.030 MG/Yr
BUAC Billed Unmetered: n g n/a 0.000 MG/Yr
UMAC Unbilled Metered: n g 2 4.053 MG/Yr choose entry option:

UUAC Unbilled Unmetered: n g 3 10.670 MG/Yr 0.25% default MG/Yr 24061 Default option selected for Unbilled Unmetered, with automatic data grading of 3 4,282.753 MG/Yr
WATER LOSSES 240.497 MG/Yr
Apparent Losses
Default option selected for Systematic Data Handling Errors, with automatic data grading of 3 choose entry option:

SDHE Systematic Data Handling Errors: n g 3 10.670 MG/Yr 0.25% default MG/Yr CMI Customer Metering Inaccuracies: n g 3 43.152 MG/Yr 1.00% percent MG/Yr under-registration UC Unauthorized Consumption: n g 3 10.670 MG/Yr 0.25% default MG/Yr Default option selected for Unauthorized Consumption, with automatic data grading of 3

64.493 MG/Yr
Real Losses
176.004 MG/Yr
240.497 MG/Yr

NON-REVENUE WATER
255.220 MG/Yr

SYSTEM DATA
Lm Length of mains: n g 6 354.0 miles (including fire hydrant lead lengths) Nc Number of service connections: n g 6 26,684 (active and inactive) Service connection density: 75 conn./mile main
Yes
Lp Average length of (private) customer service line: n g 10 ft (average distance between property line and meter) AOP Average Operating Pressure: n g 7 55.0 psi

COST DATA
CRUC Customer Retail Unit Charge: n g 7 $1.35
VPC Variable Production Cost: n g 9 $1,796.57 $/Million gallons $/yr (optional input) WATER AUDIT DATA VALIDITY TIER:
go to
dashboard
PRIORITY AREAS FOR ATTENTION TO IMPROVE DATA VALIDITY: KEY PERFORMANCE INDICATOR TARGETS:

Based on the information provided, audit reliability can be most improved by addressing the following components: OPTIONAL: If targets exist for the operational performance indicators, they can be input below:
1: Water Imported (WI) Unit Total Losses: gal/conn/day
2: Volume from Own Sources (VOS) Unit Apparent Losses: gal/conn/day 3: Customer Metering Inaccuracies (CMI) Unit Real LossesA : gal/conn/day
Unit Real LossesB: gal/mile/day
If entered above by user, targets will display on KPI gauges (see Dashboard) Are customer meters typically located at the curbstop/property line? AWWA Free Water Audit Software:

Worksheet
City of Manteca
Jan 01 2023 - Dec 31 2023
Water Supplied Error Adjustments
2023 Calendar
Real Losses:

WATER LOSSES:

Average length of customer service line has been set to zero and a data grading of 10 has been applied A weighted scale for the components of supply, consumption and water loss is included in the calculation of the Water Audit Data Validity Score *** The Water Audit Data Validity Score is in Tier III (51-70). See Dashboard tab for additional outputs. *** $/100 cubic feet (ccf)
$14,096,488
Total Annual Operating Cost
go to start page
NON-REVENUE WATER:

If entering an
Error Adjustment,
select under- or overregistration
WATER SUPPLIED:

AUTHORIZED CONSUMPTION:

Apparent Losses:

Click 'g' to determine data validity grade Click 'n' to add notes FWAS v6.0 American Water Works Association. Copyright © 2020, All Rights Reserved.

To access definitions, click the input name
To edit water system info:

AWWA Free Water Audit Software v6.0 Worksheet 1
ATTACHMENT 3
Water Audit Report for:

Audit Year:

All volumes to be entered as: MILLION GALLONS (US) PER YEAR WATER SUPPLIED choose entry option:

VOS Volume from Own Sources: n g 6 1,962.316 MG/Yr n g 8 percent MG/Yr under-registration VOSEA WI Water Imported: n g 6 2,930.785 MG/Yr n g 4 percent MG/Yr select….. WIEA WE Water Exported: n g n/a 0.000 MG/Yr n g n/a percent MG/Yr select….. WEEA 4,893.101 MG/Yr
.

AUTHORIZED CONSUMPTION
BMAC Billed Metered: n g 8 4,456.943 MG/Yr
BUAC Billed Unmetered: n g n/a 0.000 MG/Yr
UMAC Unbilled Metered: n g 2 4.219 MG/Yr choose entry option:

UUAC Unbilled Unmetered: n g 3 11.142 MG/Yr 0.25% default MG/Yr 24061 Default option selected for Unbilled Unmetered, with automatic data grading of 3 4,472.304 MG/Yr
WATER LOSSES 420.797 MG/Yr
Apparent Losses
Default option selected for Systematic Data Handling Errors, with automatic data grading of 3 choose entry option:

SDHE Systematic Data Handling Errors: n g 3 11.142 MG/Yr 0.25% default MG/Yr CMI Customer Metering Inaccuracies: n g 3 45.062 MG/Yr 1.00% percent MG/Yr under-registration UC Unauthorized Consumption: n g 3 11.142 MG/Yr 0.25% default MG/Yr Default option selected for Unauthorized Consumption, with automatic data grading of 3

67.347 MG/Yr
Real Losses
353.450 MG/Yr
420.797 MG/Yr

NON-REVENUE WATER
436.158 MG/Yr

SYSTEM DATA
Lm Length of mains: n g 6 359.0 miles (including fire hydrant lead lengths) Nc Number of service connections: n g 6 27,667 (active and inactive) Service connection density: 77 conn./mile main
Yes
Lp Average length of (private) customer service line: n g 10 ft (average distance between property line and meter) AOP Average Operating Pressure: n g 7 55.0 psi

COST DATA
CRUC Customer Retail Unit Charge: n g 7 $1.35
VPC Variable Production Cost: n g 9 $1,565.22 $/Million gallons $/yr (optional input) WATER AUDIT DATA VALIDITY TIER:
go to
dashboard
PRIORITY AREAS FOR ATTENTION TO IMPROVE DATA VALIDITY: KEY PERFORMANCE INDICATOR TARGETS:

Based on the information provided, audit reliability can be most improved by addressing the following components: OPTIONAL: If targets exist for the operational performance indicators, they can be input below:
1: Water Imported (WI) Unit Total Losses: gal/conn/day
2: Volume from Own Sources (VOS) Unit Apparent Losses: gal/conn/day 3: Customer Metering Inaccuracies (CMI) Unit Real LossesA : gal/conn/day
Unit Real LossesB: gal/mile/day
If entered above by user, targets will display on KPI gauges (see Dashboard) go to start page
NON-REVENUE WATER:

If entering an
Error Adjustment,
select under- or overregistration
WATER SUPPLIED:

AUTHORIZED CONSUMPTION:

Apparent Losses:

Average length of customer service line has been set to zero and a data grading of 10 has been applied A weighted scale for the components of supply, consumption and water loss is included in the calculation of the Water Audit Data Validity Score *** The Water Audit Data Validity Score is in Tier III (51-70). See Dashboard tab for additional outputs. *** $/100 cubic feet (ccf)
$14,096,488
Total Annual Operating Cost
Are customer meters typically located at the curbstop/property line? AWWA Free Water Audit Software:

Worksheet
City of Manteca
Jan 01 2024 - Dec 31 2024
Water Supplied Error Adjustments
2024 Calendar
Real Losses:

WATER LOSSES:

Click 'g' to determine data validity grade Click 'n' to add notes FWAS v6.0 American Water Works Association. Copyright © 2020, All Rights Reserved.

To access definitions, click the input name
To edit water system info:

AWWA Free Water Audit Software v6.0 Worksheet 1
ATTACHMENT 3
Water Shortage Contingency Plan
Appendix F
ATTACHMENT 3

PREPARED BY
Water Shortage Contingency Plan

PREPARED FOR
City of Manteca
DRAFT PLAN | APRIL 2026
ATTACHMENT 3
PUBLIC DRAFT PLAN | APRIL 2026
EARYEAR2020
Water Shortage Contingency Plan
Prepared for
City of Manteca
Project No. 265-60-25-15
Prepared by:

Bonnie Robison, PE, RCE #85779
QA/QC Review:

Elizabeth Drayer, PE, RCE #46872
Recommended for Approval by:

Somporn Boonsalat
Deputy Director of Engineering
Approved by:

George Montross
Director of Utilities
ATTACHMENT 3
N-C-265-60-25-15-WP
i City of Manteca
Water Shortage Contingency Plan
April 2026
Table of Contents

1.0 Introduction.................................................................................................................................1

2.0 Water Supply Reliability Analysis..................................................................................................1

3.0 Annual Water Supply and Demand Assessment Procedures...........................................................2

3.1 Decision-Making Process.................................................................................................................. 2

3.1.1 AWSDA Finding: Sufficient Water Supply to Meet Expected Demands ................................. 4

3.1.2 AWSDA Finding: Available Water Supply Will Not Meet Demands........................................ 4

3.2 Key Data Inputs................................................................................................................................. 4

3.3 Assessment Methodology ................................................................................................................ 5

4.0 Standard Water Shortage Levels...................................................................................................5

5.0 Shortage Response Actions...........................................................................................................6

5.1 Demand Reduction Actions.............................................................................................................. 7

5.2 Additional Mandatory Restrictions .................................................................................................. 9

5.2.1 Water Features and Swimming Pools................................................................................... 10

5.3 Supply Augmentation and Other Actions....................................................................................... 10

5.4 Locally Appropriate Operational Changes...................................................................................... 11

5.5 Emergency Response Plan.............................................................................................................. 11

6.0 Communication Protocols...........................................................................................................11

6.1 Communication for Foreseeable Events ........................................................................................ 12

6.2 Communication for Unforeseeable Events .................................................................................... 12

7.0 Compliance and Enforcement.....................................................................................................12

7.1 Compliance and Enforcement Procedures..................................................................................... 12

7.2 Appeal Process ............................................................................................................................... 13

8.0 Legal Authorities........................................................................................................................13

9.0 Financial Consequences of WSCP ................................................................................................14

10.0 Monitoring and Reporting ........................................................................................................14

11.0 WSCP Refinement Procedures...................................................................................................15

12.0 Plan Adoption, Submittal, and availability.................................................................................15

LIST OF TABLES
Table 1. Schedule of Assessment and Decision-Making Activities......................................................... 3 Table 2. City Water Shortage Contingency Plan Levels (DWR Table 8-1)............................................... 6 Table 3. Demand Reduction Actions (DWR Table 8-3R)......................................................................... 8 Table 4. Supply Augmentation and Other Actions (DWR Table 8-2R).................................................. 11 ATTACHMENT 3
N-C-265-60-25-15-WP
ii City of Manteca
Water Shortage Contingency Plan
April 2026
Table of Contents

LIST OF ACRONYMS AND ABBREVIATIONS
AB Assembly Bill 1
AMI Advanced Metering Infrastructure 6
AMR Automated Meter Reading 15
AWSDA Annual Water Supply and Demand Assessment 2
City City of Manteca 1
Director Director of Utilities 2
DWR Department of Water Resources 2
ERP Emergency Response Plan 11
Legislature California State Legislature 1
MG Million Gallons 10
O&M Operation & Management 15
RRA Risk and Resilience Assessment 11
SB Senate Bill 1
SSJID South San Joaquin Irrigation District 2
WSCP Water Shortage Contingency Plan 1
ATTACHMENT 3
N-C-265-60-25-15-WP
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Water Shortage Contingency Plan
April 2026
Water Shortage Contingency Plan

1.0 INTRODUCTION
This plan presents the City of Manteca’s (City) Water Shortage Contingency Plan (WSCP). The WSCP describes the City’s strategic plan in preparation for and response to water shortages, with a goal to proactively prevent catastrophic service disruptions. It includes water shortage conditions and associated actions that will be implemented in the event of a water supply shortage. As part of the WSCP, the City’s legal authorities, communication protocols, compliance, and enforcement, and monitoring and reporting are included.

A water shortage may occur due to several reasons, such as climate change, drought, and catastrophic events. Drought, regulatory action constraints, and natural and manmade disasters may occur at any time.

A water shortage means that the available water supply is insufficient to meet the normally expected customer water use.

In 2018, the California State Legislature (Legislature) enacted two policy bills, (Senate Bill (SB) 606 (Hertzberg) and Assembly Bill (AB) 1668 (Friedman)) (2018 Water Conservation Legislation), to establish a new foundation for drought planning to adapt to climate change and the resulting longer and more intense droughts in California. The 2018 Water Conservation Legislation set new requirements for water shortage contingency planning.

The City’s WSCP is consistent with the 2018 Water Conservation Legislation requirements. The City intends for this WSCP to be an adaptive management plan so that it may assess response action effectiveness and adapt to emergencies and catastrophic events. Refinement procedures and adoption requirements are provided in this plan to allow the City to modify this WSCP outside of the UWMP process.

2.0 WATER SUPPLY RELIABILITY ANALYSIS
This section relies on the water supply planning analysis and reliability findings from the City’s 2025 Urban Water Management Plan (UWMP). The discussion below includes a summary of the City’s existing and projected water use (from Chapter 4 of the City’s 2025 UWMP), existing and planned water supplies by source (from Chapter 6 of the City’s 2025 UWMP), and the water supply reliability assessment for 2025 to 2050 and the Drought Risk Assessment for 2026 to 2030 (from Chapter 7 of the City’s 2025 UWMP).

The City’s 2025 UWMP indicates that it can reliably meet its projected demands through 2050 in both normal and dry years. For a five-year drought beginning in 2026 (i.e., the Drought Risk Assessment), no water supply shortfalls are anticipated. In response to any supply shortfalls that may occur, the City may declare a water shortage stage (as described in Section 4.0).

Statewide water supply conditions and actions by surrounding agencies may impact the City’s available water supply. A water shortage condition occurs when the supply of potable water available cannot meet ordinary water demands for human health and safety. The City may be able to foresee its water shortage condition in some cases, but an unforeseen sudden or emergency event (e.g., power outage or earthquake) may also cause a water shortage. In general, the City’s water supply conditions may be affected by the following:
• Local surface water availability (Stanislaus River)
• Vulnerability to seismic events
• Changing environmental and regulatory requirements
• Climate change
ATTACHMENT 3
Water Shortage Contingency Plan
N-C-265-60-25-15-WP
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Water Shortage Contingency Plan
April 2026
The City’s seismic risk assessment is included in Chapter 8 of the City’s latest adopted UWMP.

In future years, the City will conduct an annual water supply and demand assessment in accordance with Section 3.0. The analysis associated with this WSCP was developed in the context of the City’s water supply sources and reliability.

3.0 ANNUAL WATER SUPPLY AND DEMAND ASSESSMENT PROCEDURES California Water Code (CWC) §10632.1 requires water suppliers to submit an Annual Water Supply and Demand Assessment (AWSDA) and an Annual Water Shortage Assessment Report starting July 1, 2022. The assessment is conducted for the current year’s upcoming dry season and the next year, assuming that the next year will be a dry year. This WSCP provides the procedures for the City to conduct its AWSDA. The findings from that assessment will provide information for City’s Annual Water Shortage Assessment Report.

The procedures provided in this section are intended to assist the City in planning for potential, foreseeable shortage in water supplies. These procedures provide the steps the City needs to take that may lead to declaring a water shortage emergency and associated water shortage level (see Section 3) and implementation of water shortage response actions (see Section 4).

3.1 Decision-Making Process
The City will use the decision-making process described below to consistently determine its water supply reliability on an annual basis. The City may adjust and improve this process as needed.

The Director of Utilities (Director), or his/her designee, is responsible for preparing the City’s AWSDA and Annual Water Shortage Assessment Report and for submitting the report to DWR by July 1st of each year.

The Director will designate City staff to gather key data inputs described in Section 3.2 and conduct the assessment in accordance with Section 3.3. In May, the City will finalize the assessment based on South San Joaquin Irrigation District’s (SSJID) anticipated water deliveries. City staff will present the AWSDA and Annual Water Shortage Assessment Report to the Director for review.

In general, the City will follow the schedule of activities shown in Table 1 for conducting the AWSDA and decision making. These activities are described in further detail in the following subsections. Due to variations in climate and hydrologic conditions, the start and end dates shown in the table are approximate and may be adjusted as needed. The intent of the schedule is to allow shortage response actions to effectively address anticipated water shortage conditions in a timely manner while complying with the State’s reporting requirements.

ATTACHMENT 3
Water Shortage Contingency Plan
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Water Shortage Contingency Plan
April 2026
Table 1. Schedule of Assessment and Decision-Making Activities Schedule Task
Activity (ACT)
Decision (DEC)
Responsible
Party
Assessment Activities
February to
March
Determine available water supply for current year and one subsequent dry year. Describe source and quantities
considering factors affecting supply as described in
Section 3.2.

ACT City Staff
February to
March
Plan for water demands for current year and one
subsequent dry year. Describe demand types and quantities considering factors presented in Section 3.2.

ACT City Staff
February to
March
Using the methodology described in Section 3.3, calculate the City’s water supply reliability for the current year and one subsequent dry year.

ACT City Staff
Late March
to Early May
Complete AWSDA based on expected water deliveries from
SSJID.

ACT Director of
Utilities
Late April or
Early May
Review AWSDA and Annual Water Shortage Assessment
Report and provide comments, if needed. ACT Director of Utilities Decision Making Activities If Assessment Shows Available Supply May Not Meet Expected Demands Late April or
Early May
Based on finalized determinations of AWSDA regarding
water shortage condition and recommended actions,
prepare recommendations on water shortage condition
determination and actions.

DEC Director of
Utilities
Late April or
Early May
Prepare ordinances or resolutions approving determinations and actions. DEC Director of Utilities
Early May
Coordinate interdepartmentally, with the region’s water service providers, and with the County for the possible proclamation of a local emergency.

DEC Director of
Utilities
Early to Late
May
Based on determinations of the AWSDA, prepare the Annual Water Shortage Assessment Report with recommendations
on water shortage condition. Submit to Director.

ACT City Staff
May
Present finalized determinations and recommendations to the City Council, along with ordinances or resolutions
approving determinations and actions.

DEC Director of
Utilities
May
Receive presentation of finalized determinations and
recommendations. Make determination of degree of
emergency and authorize water shortage response actions for implementation.

DEC City Council
Late May Review AWSDA and Annual Water Shortage Assessment Report and provide comments, if needed. ACT Director of Utilities Late May to
Early June
If a water shortage emergency condition is declared,
implement the WSCP and the water shortage response
actions as approved by the City Council.

DEC Director of
Utilities
Assessment and Report Submittal
On or
before July 1
Finalize AWSDA and Annual Water Shortage Assessment
Report and submit to DWR. ACT Director of Utilities
ATTACHMENT 3
Water Shortage Contingency Plan
N-C-265-60-25-15-WP
4 City of Manteca
Water Shortage Contingency Plan
April 2026

3.1.1 AWSDA Finding: Sufficient Water Supply to Meet Expected Demands If the AWSDA finds that available water supply will be sufficient to meet expected demands for the current year and one subsequent dry year, no further action will be required. City staff will submit the Annual Water Shortage Assessment Report to DWR by July 1 each year. The subsequent dry year may be similar to a single dry year as defined in Chapter 7 of the City’s 2025 UWMP.

3.1.2 AWSDA Finding: Available Water Supply Will Not Meet Demands Should the AWSDA find that available supply will not meet expected demands, the City will coordinate interdepartmentally, with the region’s other water service providers, and with San Joaquin County (County) for the possible proclamation of a local emergency. The Director, or his/her designee, will present the finalized assessment to the City Council, along with recommendations on water shortage condition determination and actions. Recommended actions may include declaration of a water shortage emergency, declaration of a water shortage stage, and water shortage actions.

Based on the findings of the AWSDA, the City Council will determine if a water shortage condition exists and, if needed, adopt a resolution declaring a water shortage emergency and an associated water shortage stage and authorizing water shortage actions. The Director of Utilities will then prepare the City’s Annual Water Shortage Assessment Report, incorporating the City Council determinations and approved actions.

3.2 Key Data Inputs
The AWSDA is required to evaluate supply and demands for the current year and one subsequent dry year. The following key data inputs will be used to evaluate the City’s water supply reliability.

Planned water supplies will be used as input to the AWSDA for the current year and the following one dry year. In planning for water supplies, the following factors are considered:
• Hydrological conditions
• Regulatory conditions
• Contractual constraints
• Surface water quality conditions
• Infrastructure capacity constraints or changes
• Development Planning
Planned water supply sources and quantities will be described and be reasonably consistent with the supply projections in Chapter 6 (Water Supply Characterization) of the City’s most recent UWMP. Should the supply sources and projections deviate significantly from the UWMP, the City will explain the difference.

ATTACHMENT 3
Water Shortage Contingency Plan
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Water Shortage Contingency Plan
April 2026
Planned unconstrained water demands will be used as input to the AWSDA for the current year and the following one dry year. Unconstrained water demands are customer demands where no water conservation measures are in effect. In planning for water demands, the following factors are considered:
• Weather conditions
• Water year type
• Population changes (e.g., due to development projects) • Anticipated new demands (e.g., changes to land use)
• Pending policy changes that may impact demands
• Infrastructure operations
Planned water demands types and quantities will be described and be reasonably consistent with the demand projections in Chapter 4 (Water Use Characterization) of the City’s most recent UWMP. Should the demand projections deviate significantly from the UWMP, the City will explain the difference.

3.3 Assessment Methodology
In preparing the AWSDA, the City will use the following assessment methodology and evaluation criteria to evaluate the City’s water supply reliability for the current year and following one dry year.

The City will use the AWSDA Reporting Tables workbook provided by DWR as a resource in the WUEdata Portal1to plan for current year and future year demands. Planned supply and demand inputs described in Section 3.2 will be entered in the spreadsheet in annual increments, or closer time intervals as necessary during water shortage conditions.

Supply and demand will be compared to determine the reliability of the City’s water supply in the current year and the following one dry year. The City’s water supply for the current year and the following dry year will be determined reliable if water supplies are equivalent to or exceed projected water demands.

If water supply cannot meet anticipated water demands in the current year or the following dry year, the extent of the water shortage condition will be determined, and the City will prepare response actions in accordance with this WSCP. If a water shortage is anticipated, the AWSDA findings will be presented to the City Council, along with recommended actions for City Council consideration.

4.0 STANDARD WATER SHORTAGE LEVELS
To provide a consistent regional and statewide approach to conveying the relative severity of water supply shortage conditions, the 2018 Water Conservation Legislation mandates that water suppliers plan for six standard water shortage levels (also called shortage stages) that correspond to progressive ranges of up to 10, 20, 30, 40, 50 percent, and greater than 50 percent shortages from the normal reliability condition.

Each shortage condition should correspond to additional actions water suppliers would implement to meet the severity of the impending shortages. A water shortage is the gap between available supply and projected demands.
1 California Department of Water Resources. “Resources for Urban Water Suppliers.” https://wuedata.water.ca.gov/manage_resources.asp?reportType=urban, last accessed September 22, 2025.

ATTACHMENT 3
Water Shortage Contingency Plan
N-C-265-60-25-15-WP
6 City of Manteca
Water Shortage Contingency Plan
April 2026
The City’s 2025 UWMP includes six shortage levels that address up to and greater than a 50 percent gap between supply and demand. Table 2 presents the City’s stages, which align with the State’s standard stages. The City’s water shortage levels apply to both foreseeable and unforeseeable water supply shortage conditions.

Table 2. City Water Shortage Contingency Plan Levels (DWR Table 8-1) Standard Shortage Level Percent Shortage Range
1 Up to 10
2 Up to 20
3 Up to 30
4 Up to 40
5 Up to 50
6 Greater than 50
As described in Section 3.0, the City will conduct an AWSDA to determine its water supply condition for the current year and a subsequent dry year. Preparing the AWSDA helps the City ascertain the need to declare a water shortage emergency and water shortage condition for foreseeable events. In certain cases, the City may need to declare a water shortage emergency due to unforeseen water supply interruptions.

When the City anticipates or identifies that water supplies may not be adequate to meet the normal water supply needs of its customers, the City Council may determine that a water shortage exists and consider a resolution to declare a water shortage emergency and associated level. The shortage level provides direction on shortage response actions.

5.0 SHORTAGE RESPONSE ACTIONS
CWC §10632(a)(4) requires shortage response actions that align with the defined shortage levels. The City’s shortage response actions consist of a combination of demand reduction, supply augmentation, and operational changes. The City’s suites of response actions are dependent on the event that precipitates a water shortage level, the time of the year the event occurs, the water supply sources available, and the condition of its water system infrastructure.

The City plans to use a balanced approach, combining demand reduction, supply augmentation, and operational changes to respond to the event and the resulting water shortage level. The City will adapt its implementation of response actions to close the gap between water supplies and water demand and meet the water use goals associated with the declared water shortage level.

Meters allow the City to compare current water demands with demand reduction goals and adjust its shortage response actions accordingly. The City water system is fully equipped with meters which can be read remotely and can be read monthly to track the extent of the effectiveness of the City’s response actions. The City is in the process of equipping the water system service connections with a cloud-based advanced meter infrastructure (AMI) which can be read in real time to track demand reduction goals. The City has connected 8,800 meters to the AMI system and anticipates that all customer meters will be AMI within the next five years.

ATTACHMENT 3
Water Shortage Contingency Plan
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Water Shortage Contingency Plan
April 2026
Water production and water use can be compared to previous periods. This continuous monitoring allows the City to assess water system demands and compare it with its water demand reduction goals. The City may then adjust its shortage response actions as needed to balance demands with available water supplies. For example, the City may intensify its public outreach or more vigorously enforce compliance with water use prohibitions if needed water demand reduction goals are not met for any specific shortage level. Conversely, the City may reduce public outreach frequency or decrease compliance actions if demand reduction goals are exceeded.

The shortage response actions discussed below may be considered as tools that allow the City to respond to water shortage conditions. Shortage response actions are initiated at the shortage levels shown and continue to be implemented at higher shortage levels. Because the City may continuously monitor and adjust its response actions to reasonably equate demands with available supply, the extent to which the gap between water supplies and water demand will be reduced by implementation of each action is difficult to quantify and is provided as an estimate. Certain response actions, such as public outreach and enforcement, support the effectiveness of other response actions and do not have a quantifiable effect on their own.

5.1 Demand Reduction Actions
During water shortage conditions, the City plans to reduce demand by implementing the actions shown in Table 3. Demand reduction actions are organized by the triggering water shortage level, and each action includes an estimate of how much its implementation will reduce the shortage gap. For each demand reduction action, Table 3 also indicates if the City uses compliance actions such as penalties, charges, or other enforcement. Demand reduction actions are initiated at the shortage levels shown and will continue to be implemented at higher shortage levels.

ATTACHMENT 3
Water Shortage Contingency Plan
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Water Shortage Contingency Plan
April 2026
Table 3. Demand Reduction Actions (DWR Table 8-3R)
Yes
Volume or
Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range)
(AF)
1 Expand Public Information Campaign Percentage 1% Encourage water users to reduce water waste No 1 Other Percentage 5%
City water customers shall reduce water use by
10%
No
1 Other - Prohibit use of potable water for
washing hard surfaces Percentage 1% Yes
1 Other - Require automatic shut of hoses Percentage 1% No 1 CII - Restaurants may only serve water
upon request
Percentage 1% Manteca Municipal Code: 13.04.210 Yes
2 Expand Public Information Campaign Percentage 1% Encourage water users to reduce water waste No 2 Other Percentage 5%
City water customers shall reduce water use by
20%
No
2 Landscape - Other landscape restiction
or prohibition Percentage 5% No
2 Water Features - Restrict water use for
decorative water features, such as
fountains
Percentage 1% Yes
2 Other - Require automatic shut of hoses Percentage 1% Yes 2 Landscape - Limit landscape irrigation to
specific times Percentage 10% Outdoor watering restricted to 2 days per week. Yes 3 Expand Public Information Campaign Percentage 1% Encourage water users to reduce water waste No 3 Other Percentage 5%
City water customers shall reduce water use by
30%
Yes
3 Other Percentage 1%
Prohibit vehicle washing unless use of a bucket
and hose equipped with a self-closing valve. Yes
3 Landscape - Prohibit certain types of
landscape irrigation Percentage 5% Yes
3 Landscape - Other landscape restriction
or prohibition Percentage 5%
New or expanding landscapes is limited to
drought tolerant trees, shrubs and ground cover.

No new turf grass shall be placed, hydroseeded
or laid
Yes
3 Other - Prohibit vehicle washing except
at facilities using recycled or
recirculating water
Percentage 5% Yes
3 Pools - Allow filling of swimming pools
only when an appropriate cover is in
place.

Percentage 1% Yes
3 CII - Other CII restriction or prohibition Percentage 1% Operators of hotels, motels, and other
commercial establishments offering lodging
shall post in each room and site a notice of
water shortage condition, approved by the
Director of Utilities
Yes
4 Expand Public Information Campaign Percentage 3% Encourage water users to reduce water waste No 4 Other Percentage 3%
City water customers shall reduce water use by
40%
Yes
4 Landscape - Prohibit certain types of
landscape irrigation Percentage 5%
Irrigation of any landscaping except trees or
drought tolerant plantings is prohibited Yes
4 Landscape - Other landscape restriction
or prohibition Percentage 5%
All nonresidential users are to reduce irrigation
by 40% for existing landscapes Yes
4 Moratorium or Net Zero Demand
Increase on New Connections
Percentage 3%
No new water service connections or
commitments for new water service shall be put
in place
Yes
4 Other water feature or swimming pool
restriction
Percentage 1% Filling pools and spas is prohibited Yes
5 Expand Public Information Campaign Percentage 3% Encourage water users to avoid water waste No 5 Other Percentage 3%
City water customers shall reduce water use by
50%
Yes
5 Moratorium or Net Zero Demand
Increase on New Connections
Percentage 3%
No new water service connections or
commitments for new water service shall be put
in place
Yes
6 Other Percentage 3%
City water customers shall reduce water use by
60%
Yes
Is the Supplier completing this table using the standard six levels? (yes/no) 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)
Penalty,
Charge, or
Other
Enforcement?
For Retail Suppliers
Only
Drop Down List
ATTACHMENT 3
Water Shortage Contingency Plan
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Water Shortage Contingency Plan
April 2026

5.2 Additional Mandatory Restrictions
In addition to demand reduction actions, the City has the following mandatory water restrictions set forth in City of Manteca Municipal Code (MMC) §13.04.210. Under Stages 1 to 6, the use of water in any of the following manners are restricted:

A. For washing of sidewalks, driveways, patios, parking lots, aprons or other non-landscaped exterior ground areas, except for the purpose of maintaining the area in a clean, safe and sanitary condition; B. Watering of landscaping:

1. Except at locations bearing a street address ending in an even number except on Tuesday, Thursday and Saturday,

2. Except at locations bearing a street address ending in an odd number except on Wednesday, Friday and Sunday,

3. At any location between the hours of twelve p.m. to six p.m. on any day,

4. At all locations and all times, watering of landscapes is prohibited on Monday,

5. The following shall not be subject to the watering day and time restrictions:
a. All locations within thirty days of new landscape installation, b. Manteca public golf course, city parks, the City Hall complex, and Manteca Unified School District landscapes,
c. Private parks or other landscaped areas larger than four acres, d. Landscape irrigation exclusively using drip irrigation and/or micro spray irrigation systems,

6. Irrigating outdoors during and within forty-eight hours following measurable (at a minimum any amount of rainfall that generates runoff or puddles) rainfall; C. Taking of water from any fire hydrant except by regularly constituted fire protection agencies or provided a permit for construction water has been obtained through the public works department;
D. Allowing the escape of water through leaks, breaks or malfunction in the user's plumbing or distribution system for more than twenty-four hours after discovery thereof by, or notice thereof to, the user;
E. Washing of automobiles or boats except:

1. By use of a quick-acting positive shut-off nozzle on the hose or a bucket and sponge,

2. At a commercial car wash;
ATTACHMENT 3
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Water Shortage Contingency Plan
April 2026
F. Serving water by restaurants except upon request of a customer; G. Irrigation that causes water runoff onto adjacent property, non-irrigated areas, private and public walkways, roadways, parking lots, or structures; H. Using potable water in decorative water features that do not recirculate the water; I. Hotels and motels must offer their guests the option to not have their linens and towels laundered daily, and prominently display this option in each guest room.

These restrictions are in addition to State mandated prohibitions. The City will enforce both State mandated prohibitions and its own restrictions.

5.2.1 Water Features and Swimming Pools
Water shortage response would focus on providing sufficient supply to meet health and safety needs for residential customers. Tempering the uses for water features and swimming pools will be based on the severity of the water shortage condition. The relative total water use from these sources would be a consideration for how water features would be restricted during specific water shortage conditions.

Water features are a relatively small discretionary use and may be impacted at any time during a triggered water shortage condition.

The City distinguishes special water features, such as decorative fountains and ponds, differently from pools and spas. Special water features are regulated separately. Regulations under MMC §13.04.210 prohibit the use of potable water in decorative water features unless the water is recirculated.

5.3 Supply Augmentation and Other Actions
The City has approximately 3.8 million gallons (MG) of potable water storage within the City’s service area, to manage daily operations and mitigate the effects of a short-term (days) water supply interruption. As part of the City’s operations, the City conducts annual construction projects to repair and replace water distribution system infrastructure to reduce water system losses.

In a water shortage emergency, the City may pursue purchased water supplies from water suppliers adjacent to the City boundaries to mitigate the shortage gap. Supply augmentation and other actions that the City may implement during water supply emergencies are summarized in Table 4 below.

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Table 4. Supply Augmentation and Other Actions (DWR Table 8-2R)

5.4 Locally Appropriate Operational Changes
During a water shortage of any level, the City may elect to implement operational measures to support implementation of the WSCP. This may include hiring temporary workers, reassigning staff, and/or increasing overtime to provide staffing for a range of efforts, such as conducting Water Waste Patrols, implementing the communication protocols, responding to customer service requests, scheduling, and conducting site assessments and consultations, processing incentive and rebate applications, and conducting compliance and enforcement efforts. The City may also elect to lower water system pressure and limit water main flushing and treatment vessel backwashing. Operational changes will be considered at each level of water shortage to determine whether and when to implement such measures.

5.5 Emergency Response Plan
The City’s water shortage levels outlined in Section 4.0 apply to both foreseeable and unforeseeable water supply shortage conditions, including catastrophic water shortage conditions.

The City’s Emergency Response Plan (ERP) addresses catastrophic water shortage conditions. The ERP outlines response procedures associated with unforeseeable incidents such as a regional power outage, earthquake, infrastructure failure, and other events. The ERP includes actions to be taken in preparation for, during, and recovery from such events. To protect the security of the City’s water system, the ERP is retained by the City as a confidential document.

6.0 COMMUNICATION PROTOCOLS
In the event of a water shortage, the City must inform its customers, the general public and interested parties, and local, regional, and state entities. Communication protocols for foreseeable and unforeseeable events are provided in this section. In any event, timely and effective communication must occur for appropriate response to the event. City staff are provided with City email accounts and cell phones to communicate internally and externally.

Yes
Volume or
Percentage
Drop down
Shortage Gap
Reduction Value
(May be a range)
(AF)
1-4
Expand Public Information
Campaign
Percentage 5 to 10%
Intensify public information and
educational outreach programs
5 Implement or Modify Drought Rate
Structure or Surcharge Percentage 10 to 20%
The City of Manteca will consider
implementation of drought rates.
6 Transfers Percentage
Up to the shortage
gap
The City of Manteca will coordinate with
adjacent water suppliers.

Add additional rows as needed
Is the Supplier completing this table using the standard six levels? (yes/no) How much is this going to reduce the
shortage gap?
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)
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Water Shortage Contingency Plan
April 2026

6.1 Communication for Foreseeable Events
Water shortage may be foreseeable when the City conducts its AWSDA as described in Section 3.0.

When the City determines the potential of a water shortage event, the City Council may determine and declare a water shortage emergency. The City will hold a duly noticed public meeting to present the current or predicted shortage. At the public meeting, the City Council will determine if a water shortage emergency condition exists and the degree of the emergency. The City Council will consider the shortage response actions triggered or anticipated to be triggered by the shortage level. As necessary, the City Council will act on the water shortage emergency declaration, associated water shortage level, and shortage response actions.

The City will follow the communication protocols and procedures below and may trigger any of them at any water shortage level.

1. If a water shortage emergency is anticipated, the City will coordinate interdepartmentally, with the region’s water service providers, and with the County for the possible proclamation of a local emergency.

2. The City will issue a public notice for a City Council meeting during which the AWSDA findings and recommendations for a water shortage emergency and shortage response actions are presented.

3. The City will communicate actions to customers, the general public, and interested parties through a combination of bill stuffers and newsletters, website, social media posts, press releases, and blog posts.

4. The City will communicate actions to relevant local, regional, and state officials and entities primarily through email correspondence.

6.2 Communication for Unforeseeable Events
A water shortage may also occur during unforeseeable events such as earthquakes, fires, infrastructure failures, civil unrest, and other catastrophic events. The City’s ERP provides specific communication protocols and procedures to convey actions during these events. The City may trigger these communication protocols, depending on the event. In general, communications and notifications will proceed along the identified chain of command. All City staff are provided their communication responsibilities. The ERP also provides a list of relevant contacts to notify at the local, regional, and state level.

7.0 COMPLIANCE AND ENFORCEMENT
This section describes how the City will ensure compliance with and enforcement of provisions of this WSCP. The City’s procedures include protocols for treatment of violations and actions associated with more egregious levels of violation. The procedures include appeal and exemption processes.

7.1 Compliance and Enforcement Procedures
When a water shortage is anticipated, the City Council will adopt a resolution declaring a water shortage emergency condition and the regulations and restrictions that should be enforced in response to the declared water shortage level.

The City is metered system-wide, at production facilities and at each customer connection. Thus, water use can be quantified and compared to determine users’ extent of compliance to water reduction ATTACHMENT 3
Water Shortage Contingency Plan
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April 2026
requirements. The City may also become aware of non-compliance through water waste reporting by the general public, the City’s online reporting tool, City staff inspections, and/or manual review of customer use data.

MMC Chapter 1.10 applies for violation of regulations and restrictions associated with the water shortage emergency declaration. When the City becomes aware of violations, a written notice of the violation will be delivered to the customer at the premises or by first class mail and posted in a conspicuous location at the premises. A copy of the notice will also be mailed to the regularly billed customer for water use at the premises. The notice will describe the violation and request that it be corrected, cured, or abated within a reasonable period of time as determined by the City under the circumstances. The notice will include a list of potential consequences for failure to comply with the notice, including fines. Should the violation persist, the City may assess civil penalties per MMC Chapter 1.10 Article V. Civil penalties may be assessed at a daily rate as determined by the City. In addition to fines, the City may collect administrative costs incurred in the investigation, inspection, and reinspection of the property.

7.2 Appeal Process
MMC Chapter 1.10 outlines the appeal process for City customers. If a customer wishes to appeal the City’s decision, they must submit a written appeal to the Director of Utilities, or designee, within ten calendar days of service of the notice. The Director of Utilities will request the City Attorney to appoint a hearing officer and to schedule a day, time, and place for an appeal hearing. Written notice regarding the hearing will be served at least ten calendar days prior to the hearing to the appealing customer.

8.0 LEGAL AUTHORITIES
The MMC §13.04.210 and §13.04.220 support the City’s ongoing water use restrictions, including provisions for enforcement. The MMC does not contain provisions for additional restrictions on water use during water shortages. Should a water shortage occur, the City would need to adopt an emergency ordinance to restrict water use as needed. The emergency ordinance would support the City’s water shortage contingency actions, including regulations and restrictions to be enacted in event of a water shortage.

At the time of a water shortage emergency, the City Council will, by resolution, declare a state of water shortage emergency and empower enactment of the WSCP. A water shortage emergency declaration will be in effect upon proper findings made by the City Council and remain in effect until the City Council finds and declares by resolution that the water shortage emergency condition has abated, has changed in degree, or no longer exists.

When a water shortage is determined, the City will coordinate interdepartmentally, with the region’s water service providers, and with the County for the possible proclamation of a local emergency in accordance with under California Government Code, California Emergency Services Act (Article 2, Section 8558).

ATTACHMENT 3
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In a duly noticed meeting, the City Council will determine whether a water shortage emergency condition exists and, if so, the degree of the emergency and what regulations and restrictions should be enforced in response to the shortage. The City shall declare a water shortage emergency in accordance with CWC Chapter 3 of Division 1.

California Water Code Division 1, Section 350
The governing body of a distributor of a public water supply…shall declare a water shortage emergency condition to prevail within the area served by such distributor whenever it finds and determines that the ordinary demands and requirements of water consumers cannot be satisfied without depleting the water supply of the distributor to the extent that there would be insufficient water for human consumption, sanitation, and fire protection.

The water shortage emergency declaration triggers communication protocols described in Section 6.0 and compliance and enforcement actions described in Section 7.0.

9.0 FINANCIAL CONSEQUENCES OF WSCP
Because the City bills its customers in part per unit volume of water consumed, the City may experience a reduction in revenue upon implementation of water shortage stages. The City policy is to maintain adequate water fund reserves in the event water shortage and subsequent demand reduction measures impact the City’s revenue.

The City anticipates that reduced water sales will lead to a reduction in revenue, based on decline in water sales and corresponding quantity rate charge. The City also anticipates increased costs from implementing the WSCP as follows:
• Increased staff costs: salaries, benefits, materials and supplies for various staff and new hires required to administer and implement water shortage contingency program measures and actions
• Increased O&M cost: Operations and maintenance costs associated with alternative sources of water supply, reduced system flows, or water quality challenges • Increased cost of supply and treatment: purchase and treatment costs of new water supply or additional treatment due to existing source shortfalls In 2024, the City completed a rate study that was adopted by the City Council in March 2025.2 The City water rates include a volumetric portion that is usually greater than 50 percent of the average monthly water bill. The rate study also recommended that the City increase its reserve funding to adequately cover unforeseen expenses.

10.0 MONITORING AND REPORTING
The City water system is fully metered, from its water supply sources to individual customer meters. These meters may be used as monitoring tools for compliance and reporting purposes. The City’s water system is fully set up for automated meter reading (AMR); the City is upgrading the entire system to AMI, with 2 Raftelis. December 2024. City of Manteca, CA Water Rate Study.

ATTACHMENT 3
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Water Shortage Contingency Plan
April 2026
approximately 25 percent of customer meters connected to a new AMI system. AMI allows the City to monitor customer water usage in real time as necessary for assessing compliance with demand reduction actions and helping customers achieve the reduction goal.

If reduction goals are not met through implementation of the WSCP (during any water shortage stage), the Director will notify the City Council, and more aggressive action will be taken. Additionally, if it is determined that this WSCP requires refinements to achieve reduction targets, the City will revise the WSCP according to the procedures discussed in Section 11.0 and then adopt it and make it available as discussed in Section 12.0.

11.0 WSCP REFINEMENT PROCEDURES
This WSCP is an adaptive management plan. It is subject to refinements as needed to ensure that the City’s shortage response actions and mitigation strategies are effective and produce the desired results.

Based on monitoring described in Section 10.0 and the need for compliance and enforcement actions described in Section 7.0, the City may adjust its response actions and may modify its WSCP. When a revised WSCP is proposed, the revised WSCP will undergo the process described in Section 13.0 for adoption by the City Council and distribution to the County, its customers, and the general public.

Feedback from City staff and the public is important in refining or incorporating new actions. The City seeks input from staff who interface with customers to gauge the effectiveness of its response actions and for response action ideas. The City seeks input from its customers and the general public through its website and through regularly scheduled City Council meetings.

Customer water meter data may be evaluated for each customer sector or each individual customer. The City tracks water use violations and may evaluate their frequency to determine restrictions that customers may not be able to meet. This evaluation may also show water demand reduction actions that customers may effectively implement.

12.0 PLAN ADOPTION, SUBMITTAL, AND AVAILABILITY
This WSCP is adopted concurrently with the City’s 2025 UWMP, by separate resolution on MM DD, 2026.

Prior to adoption, a duly noticed public hearing was conducted. A hard copy and electronic copy of this WSCP will be submitted to DWR within 30 days of adoption.

No later than 30 days after submittal to DWR, copies of this WSCP will be available at the City’s offices. A copy will also be provided to the County. An electronic copy of this WSCP will also be available for public review and download on the City’s website.

ATTACHMENT 3
City Code 13.04.210 Unlawful Water Use
Appendix G
ATTACHMENT 3
A.

B.

1. 2.

3. 4.

5. a.
b.
c.
d.

6. C.

D.

E.

1. 2.

F.

City of Manteca, CA
Tuesday, September 16, 2025
Title 13. Public Services
Chapter 13.04. WATERWORKS SYSTEM
§ 13.04.210. Unlawful water use.

It is unlawful for any person to use, permit or allow the use of water in any of the following manners:

For washing of sidewalks, driveways, patios, parking lots, aprons or other non-landscaped exterior ground areas, except for the purpose of maintaining the area in a clean, safe and sanitary condition;
Watering of landscaping:

Except at locations bearing a street address ending in an even number except on Tuesday, Thursday and Saturday,
Except at locations bearing a street address ending in an odd number except on Wednesday, Friday and Sunday,
At any location between the hours of twelve p.m. to six p.m. on any day, At all locations and all times, watering of landscapes is prohibited on Monday, The following shall not be subject to the watering day and time restrictions:

All locations within thirty days of new landscape installation, Manteca public golf course, city parks, the City Hall complex, and Manteca Unified School District landscapes,
Private parks or other landscaped areas larger than four acres, Landscape irrigation exclusively using drip irrigation and/or micro spray irrigation systems, Irrigating outdoors during and within forty-eight hours following measurable (at a minimum any amount of rainfall that generates runoff or puddles) rainfall; Taking of water from any fire hydrant except by regularly constituted fire protection agencies or provided a permit for construction water has been obtained through the public works department; Allowing the escape of water through leaks, breaks or malfunction in the user's plumbing or distribution system for more than twenty-four hours after discovery thereof by, or notice thereof to, the user;
Washing of automobiles or boats except:

By use of a quick-acting positive shut-off nozzle on the hose or a bucket and sponge, At a commercial car wash;
Serving water by restaurants except upon request of a customer; 9/16/25, 9:38 AM City of Manteca, CA Unlawful water use. https://ecode360.com/print/MA4966?guid=44088320 1/2
ATTACHMENT 3
G.

H.

I.

Irrigation that causes water runoff onto adjacent property, non-irrigated areas, private and public walkways, roadways, parking lots, or structures;
Using potable water in decorative water features that do not recirculate the water; Hotels and motels must offer their guests the option to not have their linens and towels laundered daily, and prominently display this option in each guest room. (Ord. 870 § 1, 1990; Ord. 911 § 2, 1991; Ord. 915 § 1, 1991; Ord. 986 § 1, 1994; Ord. 1110 § 2, 1999; Ord. 1111 § 2, 1999; Ord. 1126 § 1, 2000; Ord. 1239 § 1, 2003; Ord. 1548 §§ 2, 3, 2014; Ord. 1569 § 1, 2015; Ord. 1583 §§ 1, 2, 2016; Ord. O2022-19 § 1; Ord. O2023-17 § 1) 9/16/25, 9:38 AM City of Manteca, CA Unlawful water use. https://ecode360.com/print/MA4966?guid=44088320 2/2
ATTACHMENT 3
Water Conservation Outreach
Appendix H
ATTACHMENT 3
Current City Rebates
City of Manteca Rebates
City of Manteca High Efficiency Clothes Washer Application City of Manteca Toilet Rebate Program
City of Manteca Lawn-to-Garden Program (see below)
Lawn-to-Garden (Turf Replacement Program)
The Manteca Public Works Department pays an incentive of $1.00 per square foot when a grass lawn is replaced with a beautiful waterefficient landscape suited to our region’s semi-arid climate.

Restrictions apply, so be sure to read the Terms and Conditions, and the Design Requirements (see links below) for more information.

There are a few highlights of the program:

L2G program only applies to front yards and parkways
The maximum incentive payment is $650 for residential or 5,000 square feet for commercial If you remove your grass lawn before your design is approved, you will not qualify for the incentive
Municipal Code 7.48.050 Design Requirements for Specific Types of Landscaping
In addition to the general requirements of Section 17.48.040 (Landscape Improvement Requirements), the following provisions apply to the special types of landscaping as established below.

A. Residential Landscape. For single-family and two-family residential Zoning Districts:
9/22/25, 1:07 PM Current City Rebates | Manteca, CA
https://www.manteca.gov/departments/public-works/water-division/current-city-rebates 1/3 ATTACHMENT 3

1. For lots of land on which a building permit was issued on or before 07/15/2015, at least 35 percent of the actual front yard shall be landscaped.

2. For lots of lands on which a building permit was issued on or after 07/16/2015, at least 35 percent of the actual front yard shall be landscaped and no more than 25 percent of the actual front yard or street-side yard shall be turf.

Steps To Participate
Call the Water Division at 209 456-8468 or email [email protected] to discuss lawn to garden requirements before beginning project.

1. Submit Application, drawing and plant list to the Water Division at 209 456-8468.

2. Water Resources Coordinator will review application, perform a drive by inspection and provide approval to construct.

3. Construct Project.

4. Call Water Resources Coordinator when you have completed the project and are ready for an inspection.

5. With an approved inspection, you will receive your rebate.

Applicants due rebates for this program must also complete IRS Form W-9.

Rebate checks will be issued within 4-6 weeks.

Lawn-to-Garden Required Files
Guidelines
Terms And Conditions
FAQ
Kill Lawn
Design Requirements
Checklist
Application
Lawn-to-Garden Approved Plants
Bulbs
Grasses
Groundcover
Palms
Perennials
Shrubs
Succulents
Trees
9/22/25, 1:07 PM Current City Rebates | Manteca, CA
https://www.manteca.gov/departments/public-works/water-division/current-city-rebates 2/3 ATTACHMENT 3
Gallery
9/22/25, 1:07 PM Current City Rebates | Manteca, CA
https://www.manteca.gov/departments/public-works/water-division/current-city-rebates 3/3 ATTACHMENT 3
Service Finder
Water Conservation
Make Water Conservation A Way Of Life
The City of Manteca is dedicated to help residents and businesses conserve water. As a city, we understand we need to do our best to conserve this valuable resource.

To report water wasting, irrigation runoff, or storm drain pollution, use this link:
https://www.manteca.gov/departments/information-technology-innovation/gorequesor call our Water Resources Coordinator at (209) 456-8492.

You can also click here to email the Water Division.

You can find current city rebates at https://www.manteca.gov/departments/public-works/waterdivision/current-city-rebates Water Conservation Goodies: If you are in need of a showerhead, toilet tablets (to check for leaks), or a spray nozzle, the City of Manteca can supply you with these water conservation goodies. Click here to email us at the Water Division or call our Water Resources Coordinator Mrs. Mayorga at (209) 456-8492.

TIPS TO CONSERVE WATER
Bathroom Tips
9/22/25, 1:06 PM Water Conservation | Manteca, CA
https://www.manteca.gov/departments/public-works/water-division/water-conservation 1/3 ATTACHMENT 3
Determining if there is a leak:

Use your water meter to check for leaks. First, start by making sure that all water-using appliances are not being used, including automatic icemakers. If your meter has low flow indictor, it should not be moving. If it is, that means water is passing through the meter and that indicates there is a leak. Otherwise, note the meter reading on the dial and then check again after an hour. If the meter has moved, then you have some leaks and repairs should be made. Fixing leaks saves YOU money.

We hope you find these resources as helpful and interesting! National Resources
http://www.awwa.org/
http://www.allianceforwaterefficiency.org/
http://www.epa.gov/watersense/
http://www.usgs.gov/water/
California Resources
http://saveourwater.com/
http://www.water.ca.gov/
http://www.acwa.com/
http://resources.ca.gov/
https://www.cnps.org/
Drought / Weather
http://www.noaa.gov/
http://droughtmonitor.unl.edu/
http://www.cpc.ncep.noaa.gov/products/expert_assessment/sdo_summary.html Tools
Kitchen Tips
Laundry Tips
Outdoor Tips
9/22/25, 1:06 PM Water Conservation | Manteca, CA
https://www.manteca.gov/departments/public-works/water-division/water-conservation 2/3 ATTACHMENT 3
https://www.bewaterwise.com/calculator.html
http://www.epa.gov/watersense/our_water/start_saving.html#tabs-3 https://www.oberk.com/watercycleglossaryofterms
For Kids
http://wateruseitwisely.com/tip-tank-game/
http://www.epa.gov/students/
https://www.discoverwater.org/
http://water.usgs.gov/edu/
9/22/25, 1:06 PM Water Conservation | Manteca, CA
https://www.manteca.gov/departments/public-works/water-division/water-conservation 3/3 ATTACHMENT 3
ATTACHMENT 3
ATTACHMENT 3
UWMP and WSCP Adoption Resolutions
Not included with this submittal.

Appendix I
ATTACHMENT 3