RWS/Veolia
Monthly Operations Report
February 2026
Reporting period December 2025
RIALTO
CUSTOMER SERVICE & REVENUE
MONTHLY OPERATIONS REPORT
Reporting Period:
December 2025
Prepared for: Rialto Water Services
Prepared by: Veolia Water West Operating Services
Table of Contents
I. CUSTOMER SERVICE SUMMARY............................................................................................. 3 II. CALL CENTER PERFORMANCE ................................................................................................. 3 III. AUTOMATED SERVICES ........................................................................................................... 3 IV. CONSUMPTION & BILLING ...................................................................................................... 4 A. Consumption .................................................................................................................... 4 B. Billing ................................................................................................................................ 4 V. REVENUE & AGING .................................................................................................................. 5 A. Revenue ........................................................................................................................... 5 B. Aging ................................................................................................................................ 6 C. Bad Debt........................................................................................................................... 6 VI. SERVICE ORDERS ..................................................................................................................... 7 VII. OTHER ACTIVITIES ................................................................................................................... 7 VIII. REVENUE REPORT ................................................................................................................... 7 A. Revenue Summary ........................................................................................................... 7 B. Non Rate Revenue - Extraterritorial Customers ............................................................. 7 C. Non-Rate Revenue – Other ............................................................................................. 8 D. Development Impact Fees ............................................................................................... 8 E. Rialto Basin Water Rights and Leasing ........................................................................... 8 F. Payment Collection Method – Fiscal Year to Date ....................................................... 10 G. Cash Collections on Behalf of the City of Rialto-Prior Year Comparison ..................... 10 H. Non-Rate Revenue + Utility Revenue Collections Prior Year Comparison .................. 10 I. Non-Rate Revenue + Utility Revenue Collected Fiscal Year-to-Date ........................... 11 J. Increase in Cash Collections and Fund Distribution—Prior Year Comparison ............ 11 K. Non-Rate and Extraterritorial Customer Accounts Receivable Aging ......................... 12
3 I. CUSTOMER SERVICE SUMMARY
During this reporting month, the Customer Service team provided call service level of
88.7%. Out of 1,417 inbound calls answered 1,257 answered within the first 30 seconds.
Water consumption has decreased by 34.3% when compared against previous month.
When compared against last year, consumption has decreased by 14.3%.
Sewer revenue has decreased by 2.2% compared to the prior month and increased by 6.2% from last year.
II. CALL CENTER PERFORMANCE
During this reporting month, service level was 88.7% with 1,257 out of 1,417 being answered within the first 30 seconds. Overall average wait time was forty-seven (47) seconds.
III. AUTOMATED SERVICES
About 13,145 or 57.3 % of the rate payers have created log-ins to access their accounts online. Of these customers, with online access, 48.1% have chosen the e-bill option. This e-bill participation is 13.3% increase from December of the prior year.
86.8% 89.6% 88.8% 91.8% 89.1% 88.0% 85.0% 86.7%
80.1%
90.5% 87.8% 86.6% 88.7%
10.0%
20.0%
30.0%
40.0%
50.0%
60.0%
70.0%
80.0%
90.0%
100.0%
0 200
400
600
800
1,000
1,200
1,400
1,600
Dec-24 Jan-25 Feb-25 Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Dec-24 Jan-25 Feb-25 Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Answer in 30 Sec 1,100 1,091 1,153 1,183 1,148 1,120 1,256 1,263 1,043 1,277 1,212 1,090 1,257 Calls Answered 1,267 1,218 1,308 1,288 1,287 1,272 1,479 1,456 1,294 1,411 1,379 1,258 1,417 Service Level 86.8% 89.6% 88.8% 91.8% 89.1% 88.0% 85.0% 86.7% 80.1% 90.5% 87.8% 86.6% 88.7% Call Center Performance
Answer in 30 Sec Calls Answered Service Level
Dec-24 Jan-25 Feb-25 Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-26 Number of Bills 22,575 22,587 22,604 22,657 22,694 22,705 22,770 22,792 22,838 22,864 22,875 22,927 22,913 Number of Bill Adjustments (during billing) 29 17 10 29 25 15 18 29 10 7 8 11 27 Automated Over the Phone Payments 2,436 2,509 2,040 2,509 2,454 2,276 2,578 2,596 2,344 2,531 2,560 2,089 2,404 Online Payment 10,320 9,747 7,676 9,912 9,798 8,434 9,800 10,260 8,691 11,224 10,369 7,614 10,432 E-bill Participants 5,959 5,997 6,031 6,069 5,969 6,000 6,074 6,134 6,185 6,233 6,290 6,332 6,372 Auto Pay Participants (New Portal) 4,367 4,420 4,467 4,536 4,554 4,630 4,696 4,728 4,776 4,834 4,881 4,923 4,978 PayNearMe 95 108 73 99 97 88 88 88 88 103 85 80 80
4 IV. CONSUMPTION & BILLING
A. Consumption
Water consumption has decreased by 34.3% when compared against previous month.
When compared against last year, consumption has decreased 14.3%.
B. Billing
A total of 22,913 bills were mailed or sent out electronically in December. Billing accuracy was 99.9% with twenty-seven (27) requiring adjustments after bill generation.
January Feburary March April May June July August September October November December 2023 Water 228,173 155,716 166,787 182,460 204,254 261,868 356,836 339,778 378,728 282,726 276,127 306,012 2024 Water 206,431 180,655 200,494 182,612 212,666 337,500 324,399 361,294 446,508 312,312 360,721 253,250 2025 Water 259,394 284,167 203,166 212,580 316,422 285,524 323,411 430,678 345,305 310,177 330,460 217,069 0 50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
450,000
500,000
HCF
Billed Consumption Yearly Comparison Water
January February March April May June July August September October November December 2023 Sewer 58,591 49,302 49,159 63,252 52,718 57,019 65,743 60,617 68,539 65,798 63,762 66,131 2024 Sewer 55,865 50,136 60,877 55,837 54,976 64,339 64,897 68,143 79,931 67,254 73,871 63,136 2025 Sewer 58,347 65,403 51,489 50,598 58,461 59,483 56,496 69,265 66,908 62,147 69,061 61,468 0 10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
HCF (hundred cubic feet)
Billed Consumption Yearly Comparison Sewer
(Commercial Only)
5 V. REVENUE & AGING
A. Revenue
Water revenue has decreased 21.9% when compared against the prior month and increased 4.3% when compared against previous year. Sewer revenue has decreased 2.2% compared to the prior month and increased by 6.2% from last year.
(Please consider the scale of the graph as doubled height does not mean double the amount)
January Feburary March April May June July August September October November December 2023 Water Sales $962,367.0 $787,207.0 $813,577.0 $841,086.0 $901,604.0 $1,044,220 $1,266,316 $1,227,744 $1,331,376 $1,098,822 $1,081,741 $1,155,329 2024 Water Sales $912,498.0 $852,016.0 $881,079.0 $864,955.0 $930,910.0 $1,229,951 $1,194,468 $1,291,723 $1,510,717 $1,170,740 $1,297,360 $1,038,617 2025 Water Sales $1,059,329. $1,249,252. $1,039,421. $1,064,341. $1,341,734. $1,257,370. $1,358,417. $1,622,939. $1,420,962. $1,330,008. $1,387,141. $1,083,202. $-
$200,000.00
$400,000.00
$600,000.00
$800,000.00
$1,000,000.00
$1,200,000.00
$1,400,000.00
$1,600,000.00
$1,800,000.00
Dollars ($)
Annual Water Sales Comparison
January Feburary March April May June July August September October November December 2023 Sewer Sales $2,184,085. $2,111,381. $2,110,125. $2,219,973. $2,142,863. $2,172,890. $2,243,741. $2,202,859. $2,264,521. $2,243,821. $2,233,990. $2,260,801. 2024 Sewer Sales $2,158,668. $2,147,783. $2,229,038. $2,190,195. $2,186,025. $2,260,077. $2,264,418. $2,288,863. $2,385,936. $2,295,859. $2,344,329. $2,264,375. 2025 Sewer Sales $2,227,202. $2,415,779. $2,331,147. $2,322,513. $2,384,586. $2,384,448. $2,367,499. $2,463,167. $2,440,356. $2,408,576. $2,460,034. $2,404,771. $1,900,000.00
$2,000,000.00
$2,100,000.00
$2,200,000.00
$2,300,000.00
$2,400,000.00
$2,500,000.00
Dollars ($)
Annual Sewer Sales
6 B. Aging
The total aging balance has decreased by 4.3%, see first table below. For balances >30-days only, water has increased 10.4% and wastewater has increased by 19.7%. Sewer balances are expected to continue rising until tax roll in year 2026.
C. Bad Debt
Fourteen (14) accounts were sent to collections for a total amount of $3,341.05. These bad debts arise from customers moving out or selling the property and not closing the account with final payments.
$0.00
$500,000.00
$1,000,000.00
$1,500,000.00
$2,000,000.00
$2,500,000.00
$3,000,000.00
$3,500,000.00
$4,000,000.00
Dec-24 Jan-25 Feb-25 Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Aging Balances in Dollars ($)
Dec-24 Jan-25 Feb-25 Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Water $1,354,212 $1,332,847 $1,419,698 $1,292,967 $1,111,102 $1,487,957 $1,432,711 $1,518,645 $2,039,090 $1,720,916 $1,542,853 $1,648,072 $1,430,158 Sewer $2,776,221 $2,648,132 $3,315,495 $3,196,836 $3,180,111 $3,719,707 $3,484,523 $2,007,183 $2,577,088 $2,513,640 $2,396,727 $2,706,744 $2,735,737 Historical Aging Totals
Water and Sewer
$0
$200
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
$2,000
Nov-24 Dec-24 Jan-25 Feb-25 Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Thousands
Nov-24 Dec-24 Jan-25 Feb-25 Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Water $570,310 $601,520 $396,891 $478,675 $359,409 $396,223 $485,523 $578,110 $683,117 $661,838 $642,879 $607,605 $670,880 Sewer $1,096,563 $1,180,220 $1,365,283 $1,421,880 $1,580,609 $1,793,227 $1,813,326 $538,015 $676,294 $793,637 $876,236 $943,678 $1,129,440 Aging Balances Over 30 Days Water and Sewer
(April 2021 forward contains both consumption and meter charges)
7 VI. SERVICE ORDERS
349 service orders were initiated by the customer service team during the reporting month. Of this total, 73 service orders or 21% were due to occupant changes. 214 service orders were initiated to accommodate water disconnection for non-payment and reconnection of water services when customer set up (or reinstate) a payment arrangement with down payment.
VII. OTHER ACTIVITIES
CS department is operating with full staff with no injuries reported.
Total numbers of 1,104 disconnections were performed during the year 2025. This number is posted on rialtowater.com to comply with the SB998 requirements.
VIII. REVENUE REPORT
A. Revenue Summary
Cash Revenue is compiled and reconciled to the merchant account on a daily basis. Cash receipts and deposits are made daily and internal controls are reviewed regularly to ensure safeguarding of assets and proper recording of all transactions. Total reve nue collected in December 2025 is $4,289,000 whereas Non-Rate Revenue is $ 547,000; Utility Revenue is $3,673,000 and Tax / Ambulance Revenue at $69,000.
RWS collects Utility User Taxes and Ambulance Fees on behalf of the City of Rialto. The Utility User Tax (UUT) rates are based on the total billed amount, therefore the collection fluctuates as billed amounts change. The total UUT charges collected in December 2025 and December 2024 are $64,000 and $269,000 respectively. The large variance in collection of UUT charges is due to the City exempting UUT charges to the Residential customers beginning January 2025 through December 2025. Ambulance Revenue is also collected on behalf of the City of Rialto totaling $5,000 in December 2025 and $5,000 in December 2024.
B. Non Rate Revenue - Extraterritorial Customers
RWS bills the City of Fontana $133,000 each month for extraterritorial sewer usage.
Colton Unified School District is in agreement with RWS to pay $5 ,000 monthly for sewage connections based on enrollment rates provided each school year.
An extraterritorial agreement to provide sewer service was executed between the City of Rialto and the County of San Bernardino —County Service Area 70, Zone BL (Bloo mington).
8 This housing development project generates extraterritorial sewer service revenue of $20,000 per month.
The City has an agreement with Social Science Services dba Cedar House Life Change Center to provide extraterritorial sewer service providing sewer revenue of about $5,000 each month.
C. Non-Rate Revenue – Other
Other revenue is generated by leasing space for cell towers to AT&T, which has two leases at $2,073 and $1,500. Sprint lease is at a currently contracted rate of $2,000 each month.
Vertical Bridge also provides $2,400 a month of cell tower generated Revenue.
Rialto Bioenergy Solutions subleased a City property for $10,750 a month.
The City and San Bernardino Valley Municipal Water District have entered into a Brine Line Capacity Agreem ent on December 23, 2021. This agreement pertains to the use of its interest in the SARI Line and discharge of certain brine waste to the SARI Line exclusively from the operation of Rialto Bioenergy Facilities within the City’s boundaries. The revenue generated in this agreement consists of quarterly rent of $37,500 along with the Fixed Pipeline Capacity Fee of $3,300 per month and Fixed Treatment Plant Capacity Fee of $3,300 per month. In addition, a variable fee of any discharge costs are also billed.
The San Bernardino Valley Water District (SBVWD) reimburses RWS for water conservation programs provided to customers. A quarterly bill is delivered directly by the City.
D. Development Impact Fees
Development Impact Fees (“DIF”) are paid to the City of Rialto as various developments are completed in the City. As such, the City of Rialto receives monies from the various developments, which is then distributed to RWS. There was no DIF payment received in December of 2025.
E. Rialto Basin Water Rights and Leasing
A Standby Water Lease Agreement between Fontana Union Water Company and City of Rialto is in effect. For the 202 4-2025 Water Year, RWS billed San Bernardino County the amount of $349,264 for the Standby Charges and Production Charge. The County paid and has no further Water Lease obligations in the current year.
In addition, the County is also billed annually for Rialto Well #3’s summertime electricity costs based on peak usage.
9 Cash Collections by Payment Method – Rialto Water Services
Transaction Counts for Carrier Deposits, Remote Deposits, UB Bill Conc Service (EBOX), and Lockbox Deposits reflect number of batches deposited to the bank. Transaction counts for credit card POS, IVR, and Pay-Near-Me transactions are per number of customer payments. IVR payments are received and process by Paymentus on the day the transactions are made.
General ledger are posted and accounted for the following day the payments are processed.
Payment Method Description
Transaction
Count DECEMBER 2025 %
Carrier Deposits Cash deposits prepared per day for transport to US Bank. 22 $ 142,623 0.03407052 Remote Deposits Scanned batches of checks payments made at the customer service counter 22 762,404 18.21% EBOX Batches of electronic customer payments posted
to customer accounts at US Bank. 22 341,059 8.15%
PAYMENTUS - IVR /
Paymentus / Walk-in
Credit Card payment
Customer payments by credit cards and ACH /
eCheck payments through an Interactive Voice
Response system using a touchtone
phone.Payments originated from Merchant online
service
13,881 2,080,662 49.70%
Lockbox Deposits Batches of customer payments mailed in to US Bank's lockbox 22 848,106 20.26% Pay Near Me
Cash payment service that allows customers to pay
at a local 7-Eleven, CVS, Walmart or Family Dollar
stores. 86 11,254 0.27% Total Revenue per Bank $ 4,186,107 100.00% Recon to RUA Recap:
Adj detailed in RUA 103,158
Prior mo. Correction
RUA increase in Cash $ 4,289,265
10 F. Payment Collection Method – Fiscal Year to Date
G. Cash Collections on Behalf of the City of Rialto-Prior Year Comparison
H. Non-Rate Revenue + Utility Revenue Collections Prior Year Comparison
Jul 2025 Aug 2025 SEPT 2025 OCT 2025 NOV 2025 DEC 2025 Total % Carrier Deposits 144,793$ 140,286$ 155,654$ 147,234$ 103,022$ 142,623$ 833,611$ 3.40% Remote Deposits 499,489 241,420 686,008 995,009 311,584 762,404 3,495,913$ 14.27% EBOX 407,888 286,741 367,169 378,253 237,351 341,059 2,018,462$ 8.24% Paymentus, IVR, Credit Cards 2,118,383 1,853,657 2,370,061 2,278,360 1,572,041 2,080,662 12,273,164$ 50.11% Lockbox Deposits 1,176,928 904,658 1,003,875 1,162,475 707,921 848,106 5,803,963$ 23.69% Pay Near Me 11,821 11,616 14,142 11,316 9,254 11,254 69,404$ 0.28% Total Revenue to Bank 4,359,302$ 3,438,377$ 4,596,910$ 4,972,646$ 2,941,173$ 4,186,107$ 24,494,516$ 100.00% NSF (10,757) (15,745) (17,442) (15,892) (14,628) (20,682) (95,146)$ Net deposits 4,348,546$ 3,422,632$ 4,579,468$ 4,956,754$ 2,926,545$ 4,165,425$ 24,399,370$ DEC 2025 DEC 2024 Variance
UUT Water 25,719$ 86,944$ (61,225)$
UUT Sewer 38,099 182,162 (144,063)
Ambulance 5,622 5,767 (146)
Total 69,440$ 274,874$ (205,433)$
DEC 2025 DEC 2024 Variance
Non-Rate / Extra Territorial
Revenue 547,200$ 143,345$ 403,855$
Utility Revenue 3,672,625$ 3,692,515$ (19,890)
Total 4,219,825$ 3,835,861$ 383,965$
11 I. Non-Rate Revenue + Utility Revenue Collected Fiscal Year-to-Date
J. Increase in Cash Collections and Fund Distribution—Prior Year Comparison
Jul 2025 Aug 2025 Sept 2025 Oct 2025 Nov 2025 Dec 2025 Total Non-Rate Revenue
Cell Tower Rent,Llease 21,485 17,154 15,080 53,897 13,580 14,324 135,520 Interest Income - - - - - - -
NRR-FOG - - - - - - - Municipal Water Sales - - - - - 349,264 349,264 Extra Terr- Sewage 169,483 6,711 107,820 583,011 35,551 174,217 1,076,793 Abatement of Expenses - - - - - - - Water Meter Lost/Damaged/Repl 22,650 17,176 13,295 16,075 14,366 1,557 85,120 Misc Fees - New Occ., Same Day Svc 10,815 7,182 7,522 9,355 6,949 7,834 49,657 Miscellaneous Revenue - Sewer - - - - - 5 5
NSF - - - - - - - Total Non-Rate Revenue 224,433$ 48,223$ 143,717$ 662,339$ 70,447$ 547,200$ 1,696,359 Utility Revenue
Water Penalty 30,460 33,752 31,754 37,988 34,640 29,186 197,780 Sewer Penalty 74,191 48,802 42,100 54,993 40,418 43,022 303,527 Turf Removal, Hi-Eff Rebate (100) - - - - - (100) Water Deposits Billed 16,142 15,863 16,027 17,938 13,085 7,527 86,582 Hydrant Deposits 315 158 161 68 - 197 899 Sewer Deposits Paid - - - - - - - Sewer Deposits Billed 16,204 16,667 15,480 15,055 12,065 9,677 85,147 Water 1,329,427 1,148,584 1,723,704 1,493,556 835,225 1,291,024 7,821,520 Sewer 2,760,649 1,949,745 2,492,623 2,526,711 1,594,009 2,385,765 13,709,502 Unapplied Credits 26,588 50,012 109,984 80,529 180,113 (93,772) 353,454 Bad Debt Sewer - - - - - - - Bad Debt Water - - - - - - - Tax Roll Sewer - - - - - - - Collection Agency - Water - - - - - - - Collection Agency - Sewer - - - - - - - Collection Agency - Misc Water - - - - - - - Total Utility Revenue 4,253,876$ 3,263,582$ 4,431,832$ 4,226,839$ 2,709,556$ 3,672,625$ 22,558,310$ Total Non-Rate + Utility Rev. 4,478,309 3,311,805 4,575,549 4,889,178 2,780,002 4,219,825 24,254,669 Increase to Cash
per Incode
Adjustments
Required to GL
Cash
Fund 660-Sewer Fund 670-Water Total Cash Per
GL
Adjustments To
Match RUA to Bank
Cash/CC/Cks
Deposit To Bank
Dec 2025 4,289,265 24,159 2,478,266 1,786,840 4,289,265 (103,158) 4,186,107 Dec 2024 4,110,734 20,884 2,702,902 1,386,948 4,110,734 257,925 4,368,659
12 K. Non-Rate and Extraterritorial Customer Accounts Receivable Aging
AT&T makes annual payment of one cell tower rent and monthly dues on the other.
Social Science Service (Cedar House) balance reflects current service fees.
City of Fontana is current with its obligations.
Colton Unified School District has no balance due.
County of San Bernardino is current with its obligations.
Rialto Bioenergy Solutions is current with its obligations.
Vertical Bridge Holdco, LLC and Sprint: Vertical Bridge and Sprint have been contacted for open Invoices as well.
San Bernardino County Waste System Division’s has no balance due.
Name
Total as of
12/31/2025 Current 31 to 60 days 61 to 90 days >90 days AT&T - Easton -$ - - - - Cedar House 8,561 8,561 - - - CITY OF FONTANA 131,182 131,182 - - - Colton Unified School District - - - - - County of San Bernardino-CSA 70 BL - - - - - Rialto BioEnergy Facilities 124,782 124,782 - - - Sprint-Nextel 5,530 - - - 5,530 San Bernardino Co Waste System Div - - - - - SB Valley Mun Water District - - - - - Vertical Bridge Holdco, LLC (CIG) 10,374 2,830 2,830 - 4,714 Grand Total 280,429$ 267,356$ 2,830$ -$ 10,243$ 1 RIALTO WATER
MONTHLY OPERATIONS REPORT
Reporting Period:
December 2025
Prepared for: Rialto Water Services
Prepared by: Veolia Water West Operating Services
2 RIALTO WATER
OPERATIONS AND MAINTENANCE REPORT
Contents
I. EXECUTIVE SUMMARY 3
A. Water Production Totals 4
B. Static Water Levels 6
II. REGULATORY 7
A. Regulatory Submittals 7
B. Sample Site Location Results 8
C. Violations 10
D. Source Water Total Dissolved Solids (TDS) 10
III. HEALTH AND SAFETY 10
A. Monthly Safety Program Overview 10
IV. CHEMICAL USE 10
V. ELECTRICAL USE 11
VI. WATER QUALITY COMPLAINTS 11
VII. OPERATIONS UPDATE 11
A. Operational Wells 12
B. Valve Activity 12
C. Hydrant Flushing 12
D. Sanitary Survey 13
VIII. ASSET MANAGEMENT 13
A. Main Breaks, Service Leaks, Adverse Water Quality and Health/Safety Issues 13 B. Major Equipment and/or Machinery Outages 14
IX. RAINFALL TOTALS 14
3 RIALTO WATER
MONTHLY OPERATIONS REPORT
I. EXECUTIVE SUMMARY
Highlights of this month’s Water O&M report include the following:
• The water distribution network achieved compliance with all permit requirements.
• No sample anomalies that require secondary sampling.
• No significant issues with water availability. The purchasing of water remained consistent and daily equalization tanks levels remained at anticipated volume for customer availability.
• The Preventative Maintenance Program, as well as Valve Exercising, continues to identify areas of focus for our Routine Repair and Replacement.
4 A. Water Production Totals
Total water delivered into the Rialto system this month was 732.69 acre-feet. 639.96 acre-feet was delivered into the system from the groundwater wells (City 4A production is included in the well total). 39.29 acre-feet was delivered via the BLF transmis sion system (City 4A production has been deducted). 53.44 acre-feet came from the OPRTP.
5 DECEMBER 2025 DAILY BOOSTER TOTALS IN ACRE FEET
DATE
Booster
1 Booster 2 Booster 3 Booster 4 Booster 5 Booster 6-9 Booster 10 Booster 11 12/1/25 0.00 0.00 5.79 0.00 4.38 0.00 0.00 0.00
12/2/25 0.00 0.00 7.16 0.00 3.71 4.20 0.17 0.00
12/3/25 0.00 0.00 2.27 0.00 0.00 5.07 0.00 0.00
12/4/25 0.00 0.00 5.32 0.00 1.13 3.58 0.00 0.00
12/5/25 0.00 0.00 2.81 0.00 0.00 1.79 0.00 0.00
12/6/25 0.00 0.00 2.75 0.00 5.40 3.39 0.00 0.00
12/7/25 0.00 0.00 7.66 0.00 0.00 6.12 0.00 0.00
12/8/25 0.00 0.00 0.71 0.00 3.33 2.82 0.00 0.00
12/9/25 0.00 0.00 4.77 0.00 0.00 8.31 0.00 0.00
12/10/25 0.00 0.00 5.91 0.00 0.00 4.49 0.00 0.00
12/11/25 0.00 0.00 3.07 0.00 0.00 4.84 0.00 0.00
12/12/25 0.00 0.00 9.30 0.00 1.58 5.23 0.00 0.00
12/13/25 0.00 0.00 1.46 0.00 0.00 1.51 0.00 0.00
12/14/25 0.00 0.00 1.88 0.00 0.68 0.98 0.00 0.00
12/15/25 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12/16/25 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
12/17/25 0.00 0.00 3.21 0.00 2.57 0.00 0.00 0.00
12/18/25 0.00 0.00 2.90 0.00 0.00 0.00 0.00 0.00
12/19/25 0.00 0.00 3.13 0.00 0.00 3.58 0.00 0.00
12/20/25 0.00 0.00 0.00 0.00 7.47 0.87 0.00 0.00
12/21/25 0.00 0.00 0.86 0.00 2.54 0.00 0.00 0.00
12/22/25 0.00 0.00 2.73 0.00 4.17 4.31 0.00 0.00
12/23/25 0.00 0.00 7.28 0.00 0.02 7.59 0.00 0.00
12/24/25 0.00 0.00 7.48 0.00 0.00 10.39 0.00 0.00
12/25/25 0.00 0.00 6.02 0.00 0.00 6.54 0.00 0.00
12/26/25 0.00 0.00 0.14 0.00 3.56 0.80 0.00 0.00
12/27/25 0.00 0.00 8.59 0.00 3.55 4.82 0.00 0.00
12/28/25 0.00 0.00 2.47 0.00 2.72 2.36 0.00 0.00
12/29/25 0.00 0.00 4.47 0.00 4.65 4.93 0.00 0.00
12/30/25 0.00 0.00 9.05 0.00 0.00 4.87 0.00 0.00
12/31/25 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
TOTAL 0.00 0.00 149.25 0.00 40.11 108.97 0.06 0.00
MIN 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
MAX 0.00 0.00 17.79 0.00 6.98 9.82 0.04 0.00
AVE 0.00 0.00 4.98 0.00 1.29 3.52 0.00 0.00
6 B. Static Water Levels
All City of Rialto wells are sounded each month, both active and inactive well sites.
Depth-to-water is measured from the well head to the static water surface.
Increases in depth-to-water represent a decrease in static water level.
Well levels
Wells Depth to
Pump
Historical Maximum
Depth to Water Dec Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Chino # 1 (580 ft)
In-active well 429' 410' 412' 414' 414' 413' 413' 413' 411' 410' 410' 410' 411’ 411’ Chino # 2 (550 ft) 369' 342' 341' 335' 338' 335' 337' 334' 334' 333' 331' 333' 334’ 334’ City # 1 (260 ft) 392' 121' 126' 121' 122' 119' 117' 119' 121' 120' 120' 122' 122’ 117’ City # 2 (480 ft) 402' 147' 146' 128' 130' 128' 122' 129' 131' 125' 126' 126' 126’ 128’ City # 3 (525 ft)
Out of Service 505' 414' 414' 415' 416' 416' 414' 417' 418' 418' 417' 417’' 417’ 417’ City # 4A (528 ft) 406' 381' 374' 377' 375' 373' 362' 367' 370' 366' 360' 359' 363’ 362’ City # 5 (385 ft)
In-active well 364' 318' 318' 321' 318' 318' 316' 316' 316' 316' 317' 318' 319’ 317’ Rialto # 1 (650 ft)
In-active well 588' 561' 555' 571' 569' 565' 563' 564' 565' 562' 563' 566' 566’ 565’ Rialto # 2 (550 ft)
In-active well 502' 499' 501' 496' 495' 502' 496' 498' 498' 497' 496' 494' 496’ 495’ Rialto # 3 (509 ft) 478' 472' 473' 473' 472' 472' 470' 470' 472' 471' 471' 474' 474’ 474’ Rialto # 4 (450 ft)
In-active well 418' 413' 414' 415' 416' 415' 415' 414' 413' 414' 413' 412' 412’ 412’ Rialto # 5 (560 ft) 387' 385' 385' 384' 384' 386' 386' 387' 387' 387' 386' 386' 386’ 386’ Rialto Well # 7 In-
active well 362' 362' 360' 360' 359' 353' 356' 354' 356' 357' 357' 357' 359’ 359’ Miro # 3 (563 ft) 492' 484' 484' 484' 484' 483' 483' 481' 480' 479' 480' 480' 478’ 481’ EW-1 (780 ft) 480' 475' 474' 472' 475' 475' 474' 475' 460' 471' 467' 480' 477’ 478’
7 II. REGULATORY
All State of California and public health agency regulatory requirements were met.
A. Regulatory Submittals
• Monthly Summary of Distribution System Coliform Monitoring • NPDES Discharge Letter
• Conservation SAFER Report
Sample Test Result Standards
Type of Sampling Units of
Measure
Detectable Limit for
Reporting
Maximum Contaminant
Level
Total Coliform A -- --
E. Coli A -- --
Nitrate as N mg/L 0.20 10
Perchlorate (CLO4) μg/L 1.0 6.0
Total Dissolved Solids mg/L -- 500
P= Present
A= Absent
mg/L = parts per million
μg/L = parts per billion
Sample Date Sample Site Location Results
12/03/2025
Type of Sampling Chino
2 City
2 City
4A
Rialto
3 Rialto
5 Miro
3 EW-1
BLF
Cactus
BLF 6-
9 OPRT
P
Total Coliform A A A A A A OUT OF
SERVICE A A OUT OF
SERVICE
E. Coli A A A A A A A A
Nitrate as N 3.1
Perchlorate (CLO4) 1.2* 5.9* <1.0 7.8*
Total Dissolved Solids 220 180 290 210 190 190 290 320 *Sample is from the well head so it is before disinfection & treatment. Treatment is performed before it goes into the distribution system. Water going into the distribution system is <1.0 (non-detect).
8 B. Sample Site Location Results
Rialto Distribution Sample Results
December 2025
Sample Location Free Cl Res (Field) Total Coliform E. Coli Apparent Color Odor Threshold Turbidity CYCLE 1 - 12/02/25 mg/l P/A P/A Color Units TON NTU
335 W. Rialto 1.70 A A
1228 W. Merrill 1.50 A A
256 N. Fillmore 1.10 A A
987 W. Grove 1.10 A A
978 N. Driftwood 1.10 A A
1451 N. Linden 1.20 A A
469 W. Jackson 1.50 A A
935 E. Mariposa 1.10 A A
1000 N. Joyce 1.50 A A
766 N. Chestnut 1.20 A A
149 W. Victoria 1.00 A A
313 E. McKinley 1.10 A A
609 E. South 1.10 A A
273 E. Alru 1.40 A A
1161 S. Lilac 1.30 A A
101 E. Valley 1.50 A A
CYCLE 2 - 12/09/25 mg/l P/A P/A Color Units TON NTU
210 N. Park 0.90 A A <3.0 1 <0.10
101 S. Larch 0.90 A A <3.0 1 <0.10
320 N. Wisteria 0.90 A A <3.0 1 <0.10
861 W. Grove 0.90 A A <3.0 1 <0.10
1168 N. Glenwood 0.90 A A <3.0 1 <0.10
1320 N. Fitzgerald 0.80 A A <3.0 1 <0.10
860 N. Willow 1.10 A A <3.0 1 <0.10
209 E. Cornell 1.30 A A <3.0 1 <0.10
643 E. Margarita 1.30 A A <3.0 1 <0.10
1170 N. Terrace Rd. 1.10 A A <3.0 1 <0.10
681 E. Erwin 1.00 A A <3.0 1 <0.10
402 E. Merrill 1.20 A A <3.0 1 <0.10
261 W. Wilson 1.10 A A <3.0 1 <0.10
532 S. Iris 1.20 A A <3.0 1 <0.10
281 W. Hawthorne 1.20 A A <3.0 1 <0.10
379 W. Valley 1.10 A A <3.0 1 <0.10
9 Rialto Distribution Sample Results
October 2025
Sample Location
Free Cl Res
(Field)
Total
Coliform
E.
Coli
Apparent
Color
Odor
Threshold Turbidity
CYCLE 3 – 12/17/25 mg/l P/A P/A Color Units TON NTU
236 N. Willow 1.20 A A
775 E. Foothill 1.10 A A
878 N. Primrose 1.30 A A
369 E. Van Koevering 1.30 A A
274 W. Valencia 1.20 A A
1566 N. Fillmore 1.60 A A
932 N. Idyllwild 1.10 A A
644 N. Smoketree 1.10 A A
605 W. Rosewood 1.30 A A
1189 W. Second 1.20 A A
775 W. Rialto 1.20 A A
211 E. Wilson 1.20 A A
595 E. Huff 1.40 A A
1005 S. Riverside 1.20 A A
794 S. Verde 1.00 A A
1055 W. Bloomington 1.20 A A
CYCLE 4 - 12/23/25 mg/l P/A P/A Color Units TON NTU
375 S. Cactus 1.10 A A
101 S. Linden 1.00 A A
234 N. Larch 1.00 A A
575 N. Driftwood 0.90 A A
1355 W. Shamrock 0.90 A A
992 N. Yucca 1.30 A A
481 W. Cornell 1.20 A A
158. E. Shamrock 1.20 A A
749 E. Holly 1.30 A A
545 E. Victoria 1.30 A A
200 N. Sycamore 1.10 A A
407 E. Allen 1.10 A A
399 E. Montrose 1.20 A A
856 S. Orange 1.10 A A
911 S. Cactus 1.20 A A
220 W. Valley 1.20 A A
P/A + Present or
Absent
10 C. Violations
No violations were received during this reporting period.
D. Source Water Total Dissolved Solids (TDS)
Veolia has a goal of maintaining an acceptable blended TDS level between all its sources. This goal is achieved by shifting production to or from the lowest TDS wells or purchased low TDS water while adhering to the overall water supply strategy and meeting system demands. The TDS was 242 mg/L for the month of December as compared to 254 mg/L in November. The TDS levels are below the secondary maximum contaminant level requirements.
III. HEALTH AND SAFETY
A. Monthly Safety Program Overview
Category Monthly Statistic
Safety Training Topics LSR Q3
LSR Q4
Lost Time Incidents, count* 0
Recordable Incidents, count 0
Near Miss Incidents, count 3
Vehicle Incidents, count 0
*A lost time incident has not occurred in the past 4370 days.
IV. CHEMICAL USE
Sodium hypochlorite is the only chemical added to the water system. A total of 2314 gallons of sodium hypochlorite was used in December as compared to 2491 gallons used in November.
11 V. ELECTRICAL USE
Southern California Edison (SCE) data for December 2025. We will provide the data as it is received, thus will include yearly usage received to date.
SCE kWh
Year Month
Billed
Usage
2024 October 529,208
2024 November 266,378
2024 December 247,546
2025 January 360,398
2025 February 294,421
2025 March 223,709
2025 April 428,976
2025 May 505,764
2024 June 575,467
2025 July 842,561
2025 August 669,021
2025 September 752,171
2025 October 654,454
2025 November 734,743
2025 December 647,384
VI. WATER QUALITY COMPLAINTS
No complaints were received during this reporting period.
VII. OPERATIONS UPDATE
The overall operational strategy is to meet the daily water demand. The City of Rialto water system has six operational wells, one of which is owned by the County of San Bernardino and operated by Veolia; Oliver P. Roemer Treatment Plant (OPRTP), which is jointly owned by the City (25%) and West Valley Water District (WVWD); purchased water through the Baseline Feeder (BLF) system from San Bernardino Valley Municipal Water District (SBVMWD); and, if required to meet demand, additional water can be supplied by the City of San Bernardino (CSB) through the BLF for emergency supply only with no guarantee of actual delivery. Water produced from City Well 4A discharges into 12 the BLF and its production is included in deliveries from that shared transmission line when City Well 4A is in service.
The overall pumping strategy is based on adjudicated rights, well availability, remediation requirements, and quality of source, cost to operate, and varying weather conditions. TDS effluent concentrations for the City of Ria lto WWTP are taken into consideration when operating the facilities and water sources.
A. Operational Wells
EW-1 well was out of service due to pump issues. OPRTP meter was turned off in October.
B. Valve Activity
On the basis of information collected in 2019, Veolia now has a baseline assessment of all valves and has initiated a new cycle of valve exercising . Five valves were exercised in the month of December.
Valve Turning Progress
Valves
Turned
2020 530
2021 340
2022 463
2023 750
2024 379
2025 338
C. Hydrant Flushing
There are 63 hydrant/dead ends that are flushed annually to maintain water quality. All annual flushing were completed in December.
Hydrant/Dead End Flushing
Progress
2025
January 0
February 0
March 6
April 6
May 11
June 0
13 July 0
August 29
September 3
October 0
November 8
December 0
Total 63
Progress % (100)
D. Sanitary Survey
DDW performed field site visit s on May 22 and August 22, 2024. The results of the sanitary survey were received on September 19, 2024. All minor deficiencies have been corrected and submitted to DDW.
VIII. ASSET MANAGEMENT
The following work orders were completed by Water production staff for the month of December:
• Preventive Maintenance –268
• Corrective Maintenance –0
• Predictive Maintenance –0
502– PMs planned for January 2026
A. Main Breaks, Service Leaks, Adverse Water Quality and Health/Safety Issues
The following work orders were completed by Water distribution staff for the month of December:
• Main line – 0
• Service line – 10
• Hydrants - 0
• Angle Meter Stop – 15
• Meter Box & Lid Replacement – 23
14 • Meter Leaks/ Replacements - 23
B. Major Equipment and/or Machinery Outages
EW-1 well was out of service due to pump issues.
IX. RAINFALL TOTALS
RIALTO WASTEWATER
MONTHLY OPERATIONS REPORT
Reporting Period:
December 2025
Prepared for: - Rialto Water Services
Prepared by: - Veolia Water West Operating Services
RIALTO WASTEWATER
OPERATIONS AND MAINTENANCE REPORT
Contents
EXECUTIVE SUMMARY
1. Collection System / Customer Service Log
a. Collection System Activities
b. S.S.O. dates
c. Customer Service Call Outs
2. Wastewater Treatment Plant - Monthly Overview
a. Significant events during the month
3. Treatment Facility Performance / Laboratory Activities a. See attached Monthly Performance Summary
B. Summary of Notices and Laboratory Tests / Reports filed with government agencies c. Effluent Specifications Exceedance Discussion
4. Monthly Safety Program Overview
5. Biosolids, Chemicals, and Utilities
a. Monthly Biosolids Production
b. Monthly Chemical Consumption
c. Monthly Utilities Consumption
6. Odor Complaints / Actions Taken
7. Major Equipment and/or Machinery Outages
8. Outside Agency Activities during the Month
a. Government agency or property insurance inspections
b. Government agency environmental, health, or safety tests/monitoring c. Government agency notice of violation received
d. Government agency monitoring
e. Other matters of concern
9. Complaint Logs
TABLES
● Treatment Facility – Monthly Performance Summary
● Collection System- Monthly Pipe Cleaned
RIALTO WASTEWATER
MONTHLY OPERATIONS REPORT
EXECUTIVE SUMMARY
Highlights of this month’s Wastewater O&M report include the following:
● The treatment plant performed well and met all compliance parameters. ● There were three residential call-outs for sewer-related issues.
1. Collection System/Customer Service Log
a. Collections group activities this month:
Category Current Month
Statistics
Prior Month Statistics 2025 Year to Date
Statistics
Sanitary sewers are cleaned using the
conventional method, including feet, which
includes “Hot spot cleaning.”
22,274 22,805 257,555
Sanitary sewers assessed using the SL-RAT
method, feet 0 0 21,112
CCTV Inspection, miles (26 is the annual goal)* 2.11 2.09 27.91 Manhole Inspections 1 0 40
USA Dig Alert Markings, count 24 23 374
Residential call-outs 3 1 25
Sanitary Sewer Overflows 0 0 2
b. S.S.O. N/A
c. Customer Service Call Outs – See Item 9 for details.
2. Wastewater Treatment Plant – Monthly Overview
● NPDES discharge compliance parameters were achieved.
a. Significant events during the month were:
None
3. Treatment Facility Performance/Laboratory Activities
a. See the attached Table 1, Monthly Performance Summary.
b. Summary of Notices and Laboratory Tests/Reports filed with government agencies.
The monthly submittal of State/Federal discharge monitoring reports was completed promptly.
c. Effluent specification exceedance discussion
See Section 2 above. N/A
4. Monthly Safety Program Overview
Category Monthly Statistic
Safety Training Topics 0
Lost Time Incidents count* 0
Recordable Incidents, count 0
Near Miss Incidents, count 0
Vehicle Incidents, count 0
*A lost time incident has not occurred since 9-3-2020, totaling 1,944 days.
5. Biosolids, Chemicals, and Utilities
a. Monthly Biosolids Production
Biosolids Current Month
Statistics
Prior Month Statistics 2025 Year-to-Date
Statistics
Wet Tons Produced 1,620.2 1,074.56 14,096.76
10,245.84
b. Monthly Chemical Consumption
Chemical Current Month
Gallons Used
Prior Month
Gallons Used
Sodium Hypochlorite, Tertiary Disinfection 30,904 28,886 Sodium Bisulfite, Discharge Dechlorination 11,054 10,031 Ferrous Chloride, Digester Gas Conditioning 4,070 4,180 Polymer, Gravity Belt Thickener 496 454
Polymer, Belt Filter Press 834 722
Alum, Tertiary Filters 1 1
c. Monthly Utilities Consumption
Utility Prior Month Statistics
Electricity WWTP, KWH 460,600 377,336
Electricity Lilac LS, KWH 716 895
Electricity Sycamore LS, KWH 515 539
Electricity Ayala LS, KWH 8,376 8,561
Electricity Agua Mansa LS, KWH 2,547 2,867
Electricity Cactus LS, KWH 1,636 1,593
Electricity Ramrod LS, KWH 673 680
Frisbee Park LS, KWH 780 680
El Rancho Verde LS, KWH 2,188 2,085
Natural Gas WWTP, Therms 7,243 4,569
* LS is in bypass mode, pending CIP completion
** SCE has not updated this account.
6. Odor Complaints Received/Actions Taken
None
7. Major Equipment and/or Machinery Outages
● Sludge Holding Tank
● Aeration Basin #3 is currently offline.
8. Outside Agency Activities during the Month
a. Government agency or property insurance inspections
None
b. Government agency environmental, health, or safety tests/monitoring Permit testing was completed for this month
c. Government agency notices of violation received
None
d. Government agency monitoring
Routine monitoring reports were submitted.
e. Other matters of concern
None
9. Customer Service Callout Details Log
Date Address Comments Personnel Manhole To
Manhole
12/11/2025 993 N Primrose Resident called to report gurgling coming from their toilet. A collections member called the resident to inform them this was from sewer line cleaning.
BVO
12/11/2025 168 E Baseline The collections team responded to reports of SSO occurring behind Stater Bros. They spoke with a manager at the store and informed them that the grease
interceptor line needed to be cleaned. This required a
plumber. Containment was set up until the line was
cleared.
ET
12/22/2025 2562 W Vine A resident called regarding a sewage backup at the property: the main sewer line was checked and was clear.
The resident was instructed to have the plumber clean
the lateral to the main line, which is longer than 75 feet.
PH
Table 1 Summary
Table 2 Summary
Table 3 Summary
*(Cyanide not available at time of report)
Monthly Sewer Line Cleaned