Agenda packet — Water Subcommittee, May 28, 2026

Thursday, May 28, 2026
City of Rialto
Council Chambers
150 S. Palm Ave.

Rialto, CA 92376
Rialto City Hall, Council Chambers, 150 S. Palm Ave. Rialto CA 92376 Water Subcommittee
Mayor Joe Baca
Mayor Pro Tem Ed Scott
Regular Meeting - Final
REGULAR MEETING 10:00AM
Water Subcommittee Meeting
The City Council creates Subcommittees as needed to accomplish the work of the Council .

Subcommittees are categorized as either, Standing or Ad Hoc. Subcommittees do not replace the work or decision -making process of the City Council as a whole and are used to provide feedback to staff .

Subcommittees enable City staff to obtain early feedback from representative members of the City Council on issues affecting public policy prior to their presentation, as necessary, to the full City Council.

Any discussion or feedback expressed or received at a Subcommittee meeting should not be construed or understood to be a decision by or for the City Council. Further, any feedback the Subcommittee may make to the City Council is based on information possessed by the Subcommittee at the time the feedback is made and may be revised or amended upon receipt by the Subcommittee of additional or newer information.
1 May 28, 2026Water Subcommittee Regular Meeting - Final HOW TO REVIEW THE AGENDA. ALL AGENDAS ARE POSTED IN THE CITY HALL ADMINISTRATION BUILDING (150 SOUTH PALM AVENUE, RIALTO) AT LEAST 72 HOURS IN ADVANCE OF THE MEETING. ALL WRITINGS THAT RELATE

TO AN OPEN SESSION AGENDA ITEM AT A REGULAR SUBCOMMITTEE MEETING DISTRIBUTED TO ALL OF THE SUBCOMMITTEE WILL BE MADE AVAILABLE AT THE SAME TIME BUT AT LEAST 72 HOURS BEFORE A REGULAR MEETING, FOR PUBLIC INSPECTION ON THE CITY ’S WEBSITE AT www .rialtoca.gov AND IN THE OFFICE OF THE CITY CLERK LOCATED AT 290 WEST RIALTO AVENUE, RIALTO, CALIFORNIA (909-820-2519) FROM 7:00 A.M. TO 6:00 P.M., MONDAY THROUGH THURSDAY. ANY PERSON HAVING A QUESTION CONCERNING ANY AGENDA ITEM MAY CALL ADMINISTRATION /UTILITIES DIVISION AT (909-820-2689) TO MAKE INQUIRY CONCERNING THE NATURE OF THE ITEM DESCRIBED ON THE AGENDA.

ITEMS ADDED TO THE AGENDA. CONSISTENT WITH THE RALPH M. BROWN ACT, ADDITIONAL ITEMS MAY BE

ADDED TO THE AGENDA AND ACTED UPON BY THE SUBCOMMITTEE ONLY IF IT IS CONSIDERED TO BE A “SUBSEQUENT NEED” OR “EMERGENCY” ITEM AND IS ADDED BY A MAJORITY VOTE. MATTERS RAISED UNDER ORAL COMMUNICATIONS MAY NOT BE ACTED UPON AT THAT MEETING OTHER THAN AS PROVIDED ABOVE.

NEED ADA ASSISTANCE? IN COMPLIANCE WITH THE AMERICANS WITH DISABILITIES ACT, IF YOU NEED SPECIAL ASSISTANCE TO PARTICIPATE IN THIS MEETING, PLEASE CONTACT THE PUBLIC WORKS DIRECTOR AT (909) 421-7279. NOTIFICATION 48 HOURS PRIOR TO THE MEETING WILL ENABLE THE CITY TO MAKE REASONABLE ARRANGEMENTS TO ENSURE ACCESSIBILITY TO THIS MEETING (28 CAR 35.102-35.104 ADA Title II).

HOW TO ATTEND THE MEETING.
(1) Members of the public may attend the meeting in person.

HOW TO MAKE A PUBLIC COMMENT.
(1) Appear at the meeting and speak during the public comment period. There is a 5-minute time limit. (2) You may submit a public comment in writing to the Rialto Utility Authority by email at [email protected].

Call to Order By:

ROLL CALL

ORAL COMMUNICATIONS/PUBLIC COMMENTS

APPROVAL OF MINUTES
WS-26-0368 Minutes from April 30, 2026 Meeting
Minutes from the 04 30 2026 meetingAttachments:

REPORTS/DISCUSSION ITEMS
WS-26-0367 Update on the Citywide Integrated Security Project (FILE AND RECEIVE) WS-26-0365 Receive and File the 2025 Consumer Confidence Report for Drinking Water and Provide Feedback.
2025 Consumer Confidence ReportAttachments:

WS-26-0366 Request for Feedback Regarding Setting a Public Hearing to Place Sewer Service Charges on the County Property Tax Roll for Delinquent Accounts . (ACTION).

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2 May 28, 2026Water Subcommittee Regular Meeting - Final

UTILITY DIVISION UPDATE
WS-26-0369 Utilities Updates:

1. Veolia’s Monthly Operations Reports (MOR):
a. May 2026 (reporting period March 2026)
VeoliaRWS Monthly Operations Report_Period March 2026_MAY REPORTAttachments:

UPCOMING MEETING/FUTURE DISCUSSION ITEMS

ADJOURNMENT

Page 3 ends

3 City of Rialto
Legislation Text
File #: WS-26-0368, Version: 1, Agenda #:

For Water Subcommittee Meeting May 28, 2026
TO: Water Subcommittee Members
APPROVAL: Tanya Williams, City Manager
FROM: Nicole Hemmans, Senior Administrative Analyst Minutes from April 30, 2026 Meeting
City of Rialto Printed on 5/22/2026Page 1 of 1
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CITY OF RIALTO

REGULAR MEETING OF THE WATER SUBCOMMITTEE
April 30, 2026 - 10:00 A.M.

MINUTES

The Regular meeting of the Water Subcommittee of the City of Rialto was held in the Civic Center Council Chambers located at 150 S. Palm Avenue, Rialto, California 92376, on Thursday, April 30, 2026.

o0o

CALL TO ORDER Call to order at 10:00 A.M.

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ROLL CALL Senior Administrative Analyst Nicole Hemmans took the roll call.

Subcommittee Members / City Staff:

Mayor Joe Baca
Mayor Pro Tem Ed Scott
Tanya Williams, City Manager
Yazdan Emrani, P.E., Director of Public Works
Robert Khuu, Assistant City Attorney
Janet Franco, Deputy Director of Finance
Amparo Corona, Principal Budget and Financial Analyst
Nicole Hemmans, Senior Administrative Analyst

Additional Attendees:

Peter Luchetti, RWS/Table Rock (Virtual Attendance)
Stephen Dopudja, Dopudja & Wells Consulting
John Schatz, Legal Consultant
Marlon Brosco, RWS/Veolia
Rod LeMond, Consultant
Soheil Sadighi, RWS/Veolia
Chandrasekar Venkatraman, RWS/Veolia

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PUBLIC COMMENTS
Public comment received on May 30, 2026:

♦ None.

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5 2

CLOSED SESSION The Water Subcommittee convened in Closed Session at 10:01 a.m. to discuss one closed session item. The Closed Session concluded at 10:23 a.m. No reportable action was taken.

APPROVAL OF MINUTES

WS-26-0271 – Approval of April 30,
2026, meeting minutes.
(ACTION)

Mayor Baca asked if there were any comments pertaining to the minutes.

♦ None

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NEW BUSINESS ITEMS

WS-26-0288 – Final Construction Work
Authorization with Ri alto Water Services,
Operated by Veolia North Operating
Services, Inc., for the Sycamore Ave
Sewer Trunk Line.

Staff Request the Water Subc ommittee Review and Consider Recommending Advancing to City Council a Final Construction Work Authorization with Rialto Water Se rvices, Operated by Veolia North Operating Services, Inc., for the Sycamore Ave Sewer Trunk Line Project, in an Amount Not to Exceed $3,016,968.

Questions & Comments
♦ Rialto Water Services/Veolia provided an update regarding the FCWA project.

♦ A discrepancy in the project cost estimates was identified and discussed.

♦ The Water Subcommittee’s feedback was for City staff and Veolia to meet prior to the next City Council meeting to resolve the identified cost discrepancies and allow the item to proceed to the City Council for consideration.

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WS-26-0281 – Request for Feedback on
Closed-Circuit Television Inspection
Findings for the Wastewater Collection
System.

Staff requested feedback on Closed-Circuit Television Inspection Findings for the Wastewater Collection System.

Questions & Comments
♦ The Mayor inquired about the cost of the camera truck utilized for CCTV inspections for inclusion in a future federal funding request.

o Marlon Brosco advised that a fully equipped CCTV
camera truck is approximately $420K.

6 3

♦ Mayor Pro Tem inquired about who is responsible for removal of protrusions and what the process is to address it.

o Peter Luchellti advised that RWS/Veolia is in the process of developing a protrusion policy.

♦ Mayor Pro Tem suggested consideration of a policy whereby, if a protrusion is verified and det ermined to potentially adversely impact neighboring residents, t he necessary corrective work would be completed, and the associated costs would be
recovered from the property owner that caused the protrusion.

o0o

WS-26-0287 – Update on the River
Ranch Sewer Force Main Relocation
Project.

The Water Subcommittee received an update from Stephen Dopudja with Dopudja Wells Consulting regarding the River Ranch Sewer Force Main Relocation Project, which is being constructed in coordination with the River Ranch Residential Development by Lennar Homes.
.

Questions & Comments
♦ No action taken.

o0o

WS-26-0278 – Request for Feedback on
the Amendment No. 3 to the Professional
Services Agreement with Enplanners.

Staff Requests the Water Subcommittee Review and Provide Feedback on Amendment No. 3 to the Professional Services Agreement with Enplanners Inc., in the amount of $11,155, for additional Environmental Survey Services Associated with the Dr. June Hayes and Deborah Roberston Habitat Nature Center formally known as the Rialto Habitat Nature Center (RHNC) Project. (ACTION).
.

Questions & Comments
♦ The Water Subcommittee feedback is to proceed with presenting the item to the City Council for consideration and approval.

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WS-26-0279 – Request for Feedback on
the Amendment No. 4 to the Professional
Services Agreement with Rod LeMond,
CPA.

Staff requests that the Water Subcommittee provide feedback on Amendment No. 4 to the Professional Services Agreement with Rod LeMond, CPA, in the amount of $120,000, for continued independent financial advisory and accounting services to support the Rialto Utility Authority’s financial management, reporting, and compliance obligations. (ACTION).

Questions & Comments
♦ The Water Subcommittee feedback is to proceed with presenting the item to the City Council for consideration and approval. 7 4

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WS-26-0280 – Request for Feedback on
the Eighth Amendment to the Professional
Services Agreement with Dopudja Wells
Consulting, Inc.

Staff requests Water Subcommittee Review and Provide Feedback on the Proposal for Extended Professional Services with Dopudja & Wells Consulting, Inc. (Eighth Amendment)

Questions & Comments
♦ The Mayor and Mayor Pro Tem expressed support for
consolidating the Utilities Divi sion under the Public Works Department.

♦ The Water Subcommittee feedback is to proceed with presenting the item to the City Council for consideration and approval.

o0o

WS-26-0284 – Update on the Rialto
Supplemental Recycled Water Supply
Project.

The Water Subcommittee received an update on the Rialto Supplemental Recycled Water Supply Project, which is being developed in coordination with and led by the Inland Empire Utilities Agency.

Questions & Comments
♦ No action taken.

o0o

WS-26-0285 – Request for Feedback on
Closed-Circuit Television Inspection
Findings for the Wastewater Collection
System.

Staff requested the Water Subcommittee receive and update and provide feedback on the final 2025 Urban Water Management Plan.

Questions & Comments
♦ The Water Subcommittee feedback is to proceed with presenting the item to the City Council for consideration and approval.

o0o

WS-26-0286 – Utilities Update

The Water Subcommittee received the following updates:

1. Veolia’s Monthly Operations Reports (MOR):
• February 2026 (reporting period December 2025)
• March 2026 (reporting period January 2026)
• April 2026 (reporting period February 2026)

2. RUA Funding Awarded as of March 2026 and Project Funding List

3. Senior & Low-Income Utility Discount Program

8 5

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UPCOMING MEETINGS/OTHER

DISCUSSION ITEMS
The next Water Subcommittee meeting is scheduled for Thursday, May 28, 2026, at 10:00 a.m.

o0o

ADJOURNMENT The meeting adjourned at 11:27 PM.

9 City of Rialto
Legislation Text
File #: WS-26-0367, Version: 1, Agenda #:

For Water Subcommittee Meeting May 28, 2026
TO: Water Subcommittee Members
APPROVAL: Tanya Williams, City Manager
FROM: Nicole Hemmans, Senior Administrative Analyst Update on the Citywide Integrated Security Project (FILE AND RECEIVE) BACKGROUND:

On July 22, 2025, the City Council authorized the release of bids for the Citywide Integrated Security Solutions Project, City Project No. 230102, which is intended to enhance the security and resiliency of the City’s water and wastewater facilities.

This project involves the construction and installation of security devices at various water and wastewater facilities throughout the city. The general items of work to be performed include construction of perimeter fencing, communication towers, gate/access controls, security lighting, video/thermal imaging cameras, intrusion switches, audio alarms, flashing beacons, signage and other security measures as detailed in the construction documents. The Engineer’sestimate is $4.8 million.

ANALYSIS/DISCUSSION
The following table outlines the chronology of events and current status of the project to date:

PROJECT TIMELINE
07/22/25 City Council authorized the release of bids
02/17/26 Project was advertised on Planet bids.com.
03/03/26 Mandatory pre-bid meeting held.
04/02/26 Deadline to submit bids after a 44-calendar day bid period. No bids were received. 04/17/26 Project was re-advertised on Planetbids.com.
04/22/26 Mandatory pre-bid meeting held.
05/21/26 To date 38 questions have been received from bidders. 06/15/26 Deadline to submit bids
Following the review of the final bid submissions, a preliminary bid and contract recommendation will be brough to the Water Sub-Committee in June, with a recommendation for full contract award in July to the City Council.

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10 City of Rialto
Legislation Text
File #: WS-26-0365, Version: 1, Agenda #:

For Water Subcommittee Meeting May 28, 2026
TO: Water Subcommittee Members
APPROVAL: Tanya Williams, City Manager
FROM: Nicole Hemmans, Senior Administrative Analyst
Receive and File the 2025 Consumer Confidence Report for Drinking Water and Provide Feedback.

RECOMMENDATION
Staff request that the Water Subcommittee Receive and File the 2025 Consumer Confidence Report for Drinking Water and provide feedback.

BACKGROUND
In 1996, the United States Congress amended the Safe Drinking Water Act by adding a provision requiring all community water systems to deliver a brief annual water quality report. The annual report is referred to as a Consumer Confidence Report (CCR) and is delivered to customers annually no later than July 1st.

The CCR includes information on our source water, the levels of any detected contaminants for the calendar year, compliance with drinking water rules, plus educational material.

The online availability of the Annual Consumer Confidence Report, created by Rialto Water Services (RWS), is sent to customers in the message box of their water bill. It explains that the report is online on the RWS website and can be obtained as a hard copy from certain City facilities. Customers can also request a copy by mail through their billing statements.

ANALYSIS/DISCUSSION
Since 1990, California public water utilities have provided an annual Consumer Confidence Report to their customers. This year’sreport covers the calendar year 2023 drinking water quality testing and reporting. RWS, as operated by Veolia of North America vigilantly safeguards our water supply and, as in years past, the water delivered to the homes and businesses met the quality standards required by Federal and State regulatory agencies. The United States Environmental Protection Agency (USEPA) and the California Department of Public Health (CDPH) are the government agencies responsible for establishing and enforcing drinking water quality standards.

According to Rialto Water Services/Veolia, the City of Rialto water system continues to meet or exceed all regulatory standards. Arsenic sample results for City Well 2 currently average 5.5 parts per billion (ppb), which is consistent with historical data and remains below the State and Federal maximum contaminant level of 10 ppb. RWS continues to closely monitor arsenic levels and performs quarterly sampling of the well to ensure continued compliance with drinking water City of Rialto Printed on 5/22/2026Page 1 of 2
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11 File #: WS-26-0365, Version: 1, Agenda #:
regulations.

ENVIRONMENTAL IMPACT
This request is not a “Project”as defined by the California Environmental Quality Act (CEQA).

Pursuant to Section 15378(a), a “Project”means the whole of an action, which has a potential for resulting in either a direct physical change in the environment, or a reasonably foreseeable indirect physical change in the environment. According to Section 15378(b), a Project does not include: (5) Organizational or administrative activities of governments that will not result in direct or indirect physical changes in the environment.

GENERAL PLAN CONSISTENCY
Approval of the proposed action also complies with the following City of Rialto Guiding Principles, General Plan Goals and Policies: “OurCity government will lead by example, and will operate in an open, transparent, and responsive manner that meets the needs of the citizens and is a good place to do business.”
Approval of the proposed action also complies with the following City of Rialto Goals and Policies:

Goal 3-8: Promote affordable and quality water service capable of adequately meeting normal and emergency water demands to all areas in Rialto.

Policy 3-8.4: Advocate regular evaluation of the entire water supply and distribution system to ensure its continued adequacy, reliability, and safety.

LEGAL REVIEW
The City Attorney’s Office has reviewed the staff report.

FINANCIAL IMPACT
Operating Budget Impact
The costs associated with distributing the CCR remain minimal, as the report is primarily made available through the RWS website, with notifications of its availability communicated through the City’s existing monthly water bill distribution process.

Capital Improvement Budget Impact
There will not be any impact on the Capital Improvement Budget from the proposed action.

Licensing
A Business License is not required for the proposed action.

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12 2026 Drinking Water Quality Report

CONSUMER CONFIDENCE REPORT
13 OUR MISSION
Rialto Water Services, operated by Veolia, is committed to the long-term performance, safety, customer and community satisfaction, and lasting cost and energy eﬃciencies of Rialto’s water and wastewater systems, on behalf of the City’s residents.

ABOUT RIALTO WATER SERVICES
The City of Rialto and Rialto Utility Authority (RUA), in partnership with Rialto Water Services (RWS) formed a public private partnership when they executed a 30 year water and wastewater concession in 2012. RWS is a partnership between Table Rock Capital and the Union Labor Life Insurance Company (Ullico). RWS contracts with Veolia North America to operate the water and wastewater systems.

Under the Concession Agreement, the City retains full ownership of the water and wastewater systems, retains all water rights and supply, and possesses the rate-setting authority associated with the facilities. RWS provides financial backing, oversight and concession services while Veolia delivers all water and wastewater services, including billing and customer service, and oversees a $41 million capital improvement program to upgrade aging facilities.

ABOUT THIS REPORT
We test the drinking water quality for many constituents as required by state and federal regulations.

This report shows the results of our monitoring for the period of January 1 to December 31, 2025, and may include earlier monitoring data.

Customer Service: (909) 820-2546 Emergency After Hours: (909) 820-0400 On the Web: www.rialtowater.com EPA Safe Drinking Water Hotline: (800) 426-4791 14 15
Annual Drinking Water
Report
The purpose of this report is to provide
information about the quality of the water
delivered to customers in 2025. This report
is mandated by the United States
Environmental Protection Agency (USEPA)
and it is your right to know where your
water comes from and what it contains.

We are happy to report that we have
consistently delivered water that has met
or exceeded the standards set by State and
Federal Law.

More information about contaminants and
potential health eﬀects can be obtained
by calling the USEPA’s Safe Drinking Water
Hotline 1(800)426-4791. For information
regarding this Consumer Confidence
Report please contact David Terry, Project
Manager—Veolia: (909) 820-0400.

What is surface water?
It is any water that travels or is stored on top of the ground. This would be the water that is in rivers, lakes, streams, oceans--even though we can’t drink salt water. Sometimes surface water sinks into the ground and becomes groundwater. Surface water is treated before it becomes drinking water.

What is groundwater?
Any water that is underground is groundwater. In the water cycle, some of the precipitation sinks into the ground and goes into watersheds, aquifers and springs. Groundwater flows through layers of sand, clay, rock, and gravel which cleans the water. Ground water stays cleaner than water on the surface and does not need as much treatment as surface water.

Perchlorate Information
Rialto has a zero tolerance policy regarding water that contains detectable levels of perchlorate.

We currently have wellhead treatment on two of our wells for the removal of perchlorate. This wellhead treatment removes the perchlorate to a non-detection level. The other wells aﬀected by perchlorate contamination have been out of service and have not been used since the detection occurred. These responses, especially the installation of ion exchange water treatment systems, have produced a measure of success that has allowed the City to reliably deliver potable water to all of its customers.

The City of Rialto urges all of its residents to continue conserving water and to look for new ways to reduce the demand in our system. The City of Rialto continues to work with those responsible for the contamination to remediate perchlorate contamination in the water supply.
16 Chino 2 Well
Contaminants Expected in
Drinking Water
Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some
contaminants. The presence of contaminants does not
necessarily indicate that water poses a health risk. More information about contaminants and potential health
eﬀects can be obtained by calling the U.S. EPA's Safe
Drinking Water Hotline (800) 426-4791.

People Most Vulnerable To
Contaminants
Some people may be more vulnerable to contaminants in
drinking water than the general population.

Immunocompromised persons such as persons with
cancer undergoing chemotherapy, persons who have
undergone organ transplants, people with HIV/AIDS or
other immune disorders, some elderly, and infants can
be particularly at risk from infections. These people
should seek advice about drinking water from their
health care providers. U.S. EPA/Centers for Disease
Control (CDC) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other
microbial contaminants are available from the
Safe Drinking Water Hotline (800) 426-4791.

Contaminants That May be Present in Source Water Include:

The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.

Microbial contaminants, such as viruses and bacteria that may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.

Inorganic contaminants, such as salts and metals, that can be naturally-occurring or result from urban stormwater runoﬀ, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.

Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban stormwater runoﬀ and residential uses.

Organic chemical contaminants,
including synthetic and volatile organic
chemicals, which are byproducts of industrial
processes and petroleum production, and can,
also, come from gas stations, urban
stormwater runoﬀ, and septic systems.

Radioactive contaminants can naturally
occur or be the result of oil and gas
production and mining
17 Lead can cause serious health
eﬀects in people of all ages,
especially pregnant people, infants
(both formula-fed and breastfed),
and young children. Lead in
drinking water is primarily from
materials and parts used in service
lines and in home plumbing. Rialto
Water Services is responsible for
providing high quality drinking water
and removing lead pipes but cannot
control the variety of materials used in the plumbing in your home. Because lead levels may vary over time, lead exposure is possible even when your tap sampling results do not detect lead at one point in time. You can help protect yourself and your family by identifying and removing lead materials within your home plumbing and taking steps to reduce your family's risk. Using a filter, certified by an American National Standards Institute accredited certifier to reduce lead, is eﬀective in reducing lead exposures. Follow the instructions provided with the filter to ensure the filter is used properly. Use only cold water for drinking, cooking, and making baby formula. Boiling water does not remove lead from water. Before using tap water for drinking, cooking, or making baby formula, flush your pipes for several minutes. You can do this by running your tap, taking a shower, doing laundry or a load of dishes. If you have a lead service line or galvanized requiring replacement service line, you may need to flush your pipes for a longer period. If you are concerned about lead in your water and wish to have your water tested, contact Rialto Water Services through customer service (909)820-2546. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available at https://www.epa.gov/safewater/lead. In 2024, a lead service line inventory was taken and from these results, we are pleased to say that the service lines were lead free. For more information, go to www.rialtoca.gov/926 Arsenic. While your drinking water meets the federal and state standard for arsenic, it does contain low levels of arsenic. The arsenic standard balances the current understanding of arsenic’s possible health eﬀects against the costs of removing arsenic from drinking water. The U.S. Environmental Protection Agency continues to research the health eﬀects of low levels of arsenic, which is a mineral known to cause cancer in humans at high concentrations and is linked to other health eﬀects such as skin damage and circulatory problems.

Regulation of Drinking
Water and Bottled Water Quality
In order to ensure that tap water is safe to drink, the U.S. EPA and the State Board prescribe regulations that limit the amount of certain contaminants in water provided by public water systems. The U.S.

Food and Drug Administration regulations and California law also establish limits for contaminants in bottled water that provide the same protection for public health.

Rialto Well 3
Booster
Station
18 Primary Standards - Mandatory Health-Related Standards

MICROBIOLOGICAL CONTAMINANTS
RADIOACTIVE CONTAMINANTS***

PARAMETER UNITS MCL PHG(MCLG) RANGE AVERAGE MAJOR SOURCE IN

DRINKING WATER HEALTH EFFECTS
Gross Alpha*
2023 (pCi/L) 15 0 ND-2.63 1.08 Erosion of
Natural Deposits
Certain minerals are radioactive and may emit a form of radiation known as alpha radiation. Some people who drink water
containing alpha emitters in excess of the MCL over many years may have an increased risk of getting cancer.

Uranium*
2017 (pCi/L) 20 0.43 ND-4.56 2.46 Erosion of
Natural Deposits
Some people who drink water containing uranium in excess of the MCL over many years may have kidney problems or an increased risk of getting cancer.

WATER SOURCE

PARAMETER UNITS MCL PHG(MCLG) CITY OF

RIALTO WVWD HEALTH EFFECTS
Total Coliform
Bacteria (Total
Coliform Rule)
2025
Present/Absent
(P/A)
Presence of
Coliform
Bacteria in
5% of
Monthly
Samples
0 SAMPLE
RESULTS: 3 1
Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other, potentially harmful, waterborne pathogens may be present or that a potential pathway exists through which contamination may enter the drinking water distribution system.

We found coliforms indicating the need to look for potential problems in water treatment or distribution. When this occurs, we are required to conduct assessment(s) to identify problems and to correct any problems that were found.
19 UCMR5 - Detection of Unregulated Contaminants***
CONTAMINANT UNITS Sample Date Level Detected Range of Detections NL Health Eﬀects Perfluorobutane
Sulfonic Acid (PFBS)*
2024
ng/L 11/24 2.4 ND-2.4 500 Perfluorobutane sulfonic acid exposures resulted in decreased thyroid hormone in pregnant female mice.

Primary Standards - CONTINUED
VOLATILE ORGANIC CONTAMINANTS***
Trichloroethylene
(TCE) µg/L 5 1.7 ND-2.4 1.2
Discharge from metal
degreasing sites and
other
factories
Some people who use water containing trichloroethylene in excess of the MCL over many years may experience liver problems and may have an increased risk of getting cancer.

PARAMETER UNITS MCL PHG(MCLG) RANGE AVERAGE MAJOR SOURCE IN

DRINKING WATER HEALTH EFFECTS
20 Primary Standards - CONTINUED

INORGANIC CONTAMINANTS WATER SOURCE

PARAMETER UNITS MCL PHG(MCLG) RANGE/

AVERAGE

CITY OF

RIALTO BLF/ENCANTO MAJOR SOURCE IN DRINKING

WATER HEALTH EFFECTS
Arsenic µg/L 10 0.004
Range ND-5.1 N/A Erosion of natural deposits;
runoﬀ from orchards; glass and
electronics production wastes
Some people who drink water containing arsenic
in excess of the MCL over many years may
experience skin damage or circulatory system
problems, and may have an increased risk of
getting cancer.Average 2 2.8
Aluminum*
2023 µg/L 1000 600
Range ND-83 N/A Erosion of
natural deposits; residual from
some surface water treatment
processes
Some people who drink water containing
aluminum in excess of the MCL over many years
may experience short-term gastrointestinal tract
eﬀects.Average 28.57 0.076
Fluoride*
2023 mg/L 2 1
Range 0.25-0.32 N/A Erosion of natural deposits;
water additive that promotes
strong teeth; discharge from
fertilizer and aluminum factories
Some people who drink water containing fluoride
in excess of the federal MCL of 4 mg/L over many
years may get bone disease, including pain and
tenderness of the bones. Children who drink water
containing fluoride in excess of the state MCL of 2
mg/L may get mottled teeth.

Average 0.27 0.41
Hexavalent
Chromium*
2023
µg/L 10 0.02
Range 0.58-2.8 N/A
Erosion of natural deposits;
transformation of naturally
occurring trivalent chromium to
hexavalent chromium by natural
processes and human activities
such as discharges from
electroplating factories, leather
tanneries, wood preservation,
chemical synthesis, refractory
production, and textile
manufacturing facilities.

Some people who drink water containing
hexavalent chromium in excess of the MCL over
many years may have an increased risk of getting
cancer.

Average 1.5 1.1
21 Primary Standards - CONTINUED

INORGANIC CONTAMINANTS

WATER SOURCE

PARAMETER UNITS MCL PHG(MCLG) RANGE/

AVERAGE

CITY OF

RIALTO BLF/ENCANTO MAJOR SOURCE IN DRINKING

WATER HEALTH EFFECTS
Nitrate (as N)*
2023 mg/L 10 10
Range 1.5-3.6 1.9 - 4.8
Runoﬀ and leaching from
fertilizer use; leaching from
septic tanks and sewage;
erosion of natural deposits.

Infants below the age of six months who drink
water containing nitrate in excess of the MCL may
quickly become seriously ill and, if untreated, may
die because high nitrate levels can interfere with
the capacity of the infant’s blood to carry oxygen.

Symptoms include shortness of breath and
blueness of the skin. High nitrate levels may also
aﬀect the oxygen-carrying ability of the blood of
pregnant women.

Average 2.55 3.28
Barium mg/L 1 2
Range ND N/A Discharges of oil drilling wastes
and from metal refineries; erosion
of natural deposits
Some people who drink water containing barium
in excess of the MCL over many years may
experience an increase in blood pressure.Average ND 0.053 Chromium
(total) mg/L 50 100
Range ND N/A Discharge from steel and pulp mills
and chrome plating; erosion of
natural deposits
Some people who use water containing chromium
in excess of the MCL over many years may
experience allergic dermatitisAverage ND 1.9
Perchlorate
µg/L 6 1
Range ND N/A
Perchlorate is an inorganic
chemical used in solid rocket
propellant, fireworks. explosives,
flares, matches, and a variety of
industries. It usually gets into
drinking water as a result of
environmental contamination from
historic aerospace or other
industrial operations that used or
use, store, or dispose of
perchlorate and its salts.

Perchlorate has been shown to interfere with
uptake of iodide by the thyroid gland, and to
thereby reduce the production of thyroid
hormones, leading to adverse eﬀects associated
with inadequate hormone levels. Thyroid
hormones are needed for normal prenatal growth
and development of the fetus, as well as for
normal growth and development in the infant and
child. In adults, thyroid hormones are needed for
normal metabolism and mental function.

Average ND 0.62
22 Disinfection Byproducts, Disinfectant Residuals, and Disinfection ByproductPrecursors Inorganic Contaminants Continued

WATER SOURCE

PARAMETER UNITS MCL PHG
(MCLG) RANGE/AVG CITY OF

RIALTO WVWD

MAJOR SOURCE

IN DRINKING
WATER

HEALTH EFFECTS
Total
Trihalomethanes
(TTHMs)
µg/L LRAA =
80 N/A
RANGE ND-3.3 ND-72.4 Byproduct of
drinking water
disinfection
Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience liver, kidney, or central nervous system problems, and may have an increased risk of getting cancer.AVERAGE 0.62 28.9
Haloacetic Acids µg/L LRAA =
60 N/A
RANGE ND ND-14.1 Byproduct of
drinking water
disinfection
Some people who drink water containing haloacetic acids in excess of the MCL over many years may have an increased risk of getting cancerAVERAGE ND 8.1

WATER SOURCE

PARAMETER UNITS MCL PHG(MCLG)

CITY OF

RIALTO WVWD MAJOR SOURCE IN

DRINKING WATER HEALTH EFFECTS
Lead-School
Testing µg/L 15 0.2
Number of School
Lead Sampling: 8 N/A Internal corrosion of
household plumbing
system
*Last 90th Percentile
Results ND-12 N/A
Copper mg/L AL= 1.3 0.3
Number of sites
Sampled 30 40 Internal corrosion of
household plumbing
systems; erosion of
natural deposits;
leaching from wood
preservatives
Copper is an essential nutrient, but some people who
drink water containing copper in excess of the action
level over a relatively short amount of time may
experience gastrointestinal distress. Some people who
drink water containing copper in excess of the action
level over many years may suﬀer liver or kidney damage.

People with Wilson’s Disease should consult their
personal doctor.

Last 90th Percentile
Results 0.14 0.18
23 Secondary Standards - Aesthetic Standards
Chloride mg/L 500
Range 3.7-10 N/A
ND Run oﬀ/leaching from natural
deposits; seawater influenceAverage 5.7 21
Hardness mg/L N/A
Range 130-220 N/A
ND
“Hardness” is the sum of polyvalent cations present
in the water, generally magnesium and calcium.

The cations are usually naturally occurring.Average 160 260 Sodium mg/L N/A
Range 12-25 N/A
ND “Sodium” refers to the salt present in the water and is generally naturally occurring.Average 16 20
Specific
Conductance µS/cm 1,600
Range ND-500 N/A 300-610 Substances that form
ions when in water;
seawater influenceAverage 288 580 393
Odor units 3 units
Range ND-1 N/A 1-2
Naturally-occuring organic materials
Average 1 1 1
Sulfate mg/L 500
Range 14-51 N/A
ND
Run oﬀ/leaching from
natural deposits;
industrial wastesAverage 25 59
Total Dissolved
Solids (TDS) mg/L 1,000
Range 210-290 250-380
ND Run oﬀ/leaching
from natural depositsAverage 238 323
Turbidity units 5 units
Range ND-0.49 ND(0.020)-0.51 ND-5.8
Soil runoﬀ
Average 0.11 0.178 ND

WATER SOURCE
PARAMETER UNITS MCL RANGE/AVERAGE CITY OF RIALTO BLF/ENCANTO WVWD Typical Source of Contaminant 24 Terms Used in This Report:

Maximum Contaminant Level (MCL): MCL is the highest level of a contaminant that is allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible. Secondary MCLs are set to protect the odor, taste, and appearance of drinking water.

Maximum Contaminant Level Goal (MCLG):

The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs are set by the U.S. Environmental Protection Agency (USEPA).

Public Health Goal (PHG):

The level of a contaminant in drinking water below which there is no known or expected risk to health. PHGs are set by the California Environmental Protection Agency.

Maximum Residual Disinfectant Level (MRDL):

The level of a disinfectant added for water treatment that may not be exceeded at the consumer’s tap.

Maximum Residual Disinfectant Level Goal (MRDLG):

The level of a disinfectant added for water treatment below which there is no known or expected risk to health. MRDLGs are set by the U.S. Environmental Protection Agency.

Treatment Technique (TT):

A required process intended to reduce the level of a contaminant in drinking water.

UCMR5: Unregulated Contaminants Monitoring1 ; Fifth Unregulated Contaminant Rule
Primary Drinking Water Standard (PDWS): MCLs, MRDLs and treatment techniques (TTs) for contaminants that aﬀect health, along with their monitoring and reporting requirements.

Regulatory Action Level (AL):

The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.

Variances and Exemptions:

Department permission to exceed an MCL or not comply with a TT under certain conditions.

BLF: Baseline FeederWVWD: West Valley Water District
NL: Notification Level ND: Not detectable in water at testing limit µs/cm: microSiemen per centimeter; or micromho
per centimeter (µmho/cm)
1 Unregulated contaminant monitoring helps U.S. EPA and the State Water Resources Control Board to determine where certain contaminants occur and whether the contaminants need to be regulated.
*** City of Rialto Results ONLY are displayed as the other water sources have only ND results

UNITS UNITS EQUIVALENCE
mg/L = milligrams
per liter
ppm = parts per
million 1 second in 11.5 days
µg/L = micrograms
per liter
ppb = parts per
billion
1 second in nearly 32
years
ng/L = nanograms
per liter
ppt = parts per
trillion
1 second in nearly
32,000 years
pg/L = picograms
per liter
ppq = parts per
quadrillion
1 second in nearly
32,000,000 years
* Constituent not sampled for in 2025 but in a diﬀerent year as that was when it was sampled last 25 Water & Employee Quality
Rialto Water Services is proud to inform residents that the Water Division has passed another annual water quality checkup. City of Rialto Water has met all the Drinking Water Standards set forth by the State and Federal Governments. Part of meeting these requirements is having California Water Resources Control Board and American Water Works Association (AWWA) certified employees in water distribution, treatment and cross connection/ backflow protection. Certifications are obtained by taking college level courses in water science and engineering. We have entered into a collective bargaining agreement that has placed even higher standards on operators and certification levels. In addition, staﬀ continues to upgrade certifications as a part of our continuing education program. State and federal certifications allow us to operate and maintain the public water system for the City of Rialto. This is just one of the many committed eﬀorts we put towards producing clean drinking water for our customers.

Help Us Conserve This Precious Resource
Surface water levels are not back to normal and groundwater basins, where much of Rialto’s water comes from, are still depleted from the continuing drought. We all play an important role in meeting conservation targets set by the state, whether at home or work. Please review these simple water conservation tips and help us conserve this, our most precious natural resource.

Cedar Reservoir
The City of Rialto oﬀers rebate
programs to help you purchase
high-eﬃciency toilets and
washing machines, smart
irrigation timers, high-eﬃciency
and automatic shut oﬀ nozzles,
and turf replacement.

Please visit the utility’s website
at www.rialtowater.com and
look for the rebate application or
email ASKRUA.com for more
information.

For more conservation tips and
other drought-related
information, please visit our
website at
www.rialtowaterservices.com
26 FACTS ABOUT OUR SYSTEM
➢ In 2025, 75% of our total potable
drinking water was sourced from our
groundwater basins, 15% from the
Baseline Feeder (BLF) and 10% was
surface water.
➢ Population 59,264 (GIS Census Data)
➢ Number of Water Service Connections
= 12,451
➢ Miles of Water Main = 186.5
➢ Number of Producing Wells = 7
➢ Total Reservoir Capacity = 28 million
gallons
➢ Maximum Daily Production = 14.18
million gallons
➢ Minimum Daily Production = 3.75
million gallons
➢ Average Daily Production = 9.25 million
gallons
➢ Total Annual Production = 3.391 billion
gallons

WATER CONSERVATION FACTS
➢ Fill washing machines and dishwashers
before running them. Partial loads use the
same amount of water as full loads. You
can save up to 1,000 gallons a month.
➢ Little leaks add up in a hurry. A dripping
faucet or a toilet leak can add up to
hundreds of gallons of wasted water.
➢ Turn oﬀ the water while you brush your
teeth. You can save up to 500 gallons a
month.
➢ Be sure to use low-flow showerheads and
install aerators on your kitchen and
bathroom faucets. They restrict the flow
without compromising water pressure.

You can save up to 750 gallons a month.
➢ Do not use a hose outside to clean
sidewalks and driveways; instead use a
broom.
➢ Follow the Stage 2 Water Alert restrictions
issued by the City.
➢ Be waterwise and think before you turn on
the tap.
27 28
Note of Importance Translations
.اﻟﻌﺮﺑﯿﺔ ﺑﺎﻟﻠﻐﺔ ﻣﺴﺎﻋﺪة ﻋﻠﻰ ﻟﻠﺤﺼﻮل N Riverside, Rialto, CA 92376 (909)820-2546 437 ﻋﺒﺮ Rialto Water Services ﻣﻊ اﻟﺘﻮاﺻﻞ ﯾُﺮﺟﻰ. اﻟﺸﺮب ﻣﯿﺎه ﻋﻦ ﻣﮭﻤﺔ ﻣﻌﻠﻮﻣﺎت ﻋﻠﻰ اﻟﺘﻘﺮﯾﺮ ھﺬا ﯾﺤﺘﻮي Este informe contiene información muy importante sobre su agua para beber. Favor de comunicarse Rialto Water Services a (909)820-2546 para asistirlo en español.

Այս զեկույցը պարունակում է կարեւոր տեղեկություններ ձեր խմելու ջրի մասին: Խնդրում ենք դիմել Rialto Water Services ջրի համակարգի հասցեով 437 N Riverside, Rialto, CA 92376 կամ հեռախոսահամարով (909)820-2546 հայերենով օգնություն ստանալ համար:
本報告包含閣下飮用水嘅重要訊息。如需廣東話垂詢，請聯絡 Rialto Water Services, (909)820-2546 ﺷﻢ آﺷﺎﻣﯿﺪﻧﯽ آب ﻣﻮرد در ﻣﮭﻤﯽ اطﻼﻋﺎت ﺣﺎوی ﮔﺰارش اﯾﻦ.
آﺷﺎﻣﯿﺪﻧﯽ آب ﺳﺎزﻣﺎن ﺑﮫ اطﻼﻋﺎت ﮐﺴﺐ ﺑﺮای ﻟﺘﻔﺎRialto Water Services آدرس در ﮐﮫN Riverside 437, Rialto, CA 92376 اﺳﺖ 2546-820(909) ﺗﻠﻔﻦ ﺷﻤﺎره. ﺑﮕﯿﺮﯾﺪ ﺗﻤﺎس.

Ce rapport contient des informations importantes concernant votre eau potable. Veuillez contacter Rialto Water Services à (909)820-2546 pour de plus amples informations en français.

Dieser Bericht enthält wichtige Information über Ihr Trinkwasser. Bitte wenden Sie sich an Rialto Water Services unter (909)820-2546, um Unterstützung in deutscher Sprache zu erhalten.
इस रपोटर्क में आपक े पीने क े जल से सम्बंधत महत्वपूणर्क जानकारी है l हंदी में सहायता क े लए, Rialto Water Services को 437 N Riverside, Rialto, CA 92376 अथवा (909)820-2546 पर संपक र्क करें
Tsab ntawv no muaj cov ntsiab lus tseem ceeb hais txog koj cov dej haus. Thov hu rau Rialto Water Services ntawm (909)820-2546 yog koj xav tau kev pab hais lus Hmoob. 29
この報告書には上水道に関する重要な情報が記されております。ご質問等ございましたら、Rialto Water Services, (909)820-2546まで日本語でご連絡下さい。 이 보고서는 당신의 식수에 관한 중요한 정보를 포함하고 있습니다. 한국어로 된 도움을 원하시면 Rialto Water Services, (909)820-2546 로 문의 하시기 바랍니다. 这份报告含有关于您的饮用水的重要讯息。请用以下地址和电话联系 Rialto Water Services 以获得中文的帮助:437 N Riverside, Rialto, CA 92376, (909)820-2546 這份報告含有關於您的飲用水的重要訊息。請用以下地址和電話聯繫 Rialto Water Services以獲得中文的幫助:437 N Riverside, Rialto, CA 92376, (909)820-2546 Este relatório contém informação importante sobre sua água potável. Por favor entre em contato com Rialto Water Services a (909)820-2546 para auxílio em portugués.
ਐੱਸ ਿਰਪੋਟ ਿਵਚ ਤੁਵਾੜੇ ਪੀਣੇ ਦੇ ਵਾਰੇ ਮਹ ੱ ਤਵਪੂਰਨ ਸੂਚਨਾ ਹੈ l ਪ ੰ ਜਾਬੀ ਿਵਚ ਮਦਦ ਲਈ, Rialto Water Services ਨੂ ੰ 437 N Riverside, Rialto, CA 92376ਜਾਂ(909)820-2546 ਤੇ ਸ ੰ ਪਰਕ ਕਰੋ | Этот отчет содержит важную информацию о вашей питьевой воде. Пожалуйста, свяжитесь с Rialto Water Services по (909)820-2546 для получения помощи на русском языке.

Ang pag-uulat na ito ay naglalaman ng mahalagang impormasyon tungkol sa inyong inuming tubig. Mangyaring makipag-ugnayan sa Rialto Water Services and 437 N Riverside, Rialto, CA 92376 o tumawag sa (909)820-2546 para matulungan sa wikang Tagalog. รายงานฉบับนี้มีขอมูลที่สําคัญเกี่ยวกับนํ้าประปาของทาน กรุณาติดตอ Rialto Water Services ที่ (909)820-2546 เพื่อการชวยเหลือในภาษาไทย Báo cáo này chứa thông tin quan trọng về nước uống của bạn. Xin vui lòng liên hệ Rialto Water Services tại (909)820-2546 để được trợ giúp bằng tiếng Note of Importance Translations
30 City of Rialto
Legislation Text
File #: WS-26-0366, Version: 1, Agenda #:

For Water Subcommittee Meeting May 28, 2026
TO: Water Subcommittee Members
APPROVAL: Tanya Williams, Assistant City Manager
FROM: Nicole Hemmans, Senior Administrative Analyst Request for Feedback Regarding Setting a Public Hearing to Place Sewer Service Charges on the County Property Tax Roll for Delinquent Accounts. (ACTION).

RECOMMENDATION
Staff requests feedback regarding setting a public hearing to place sewer service charges on the County Property Tax Roll for delinquent accounts.

BACKGROUND
The City of Rialto (City) / Rialto Utility Authority (RUA) provides sewer services throughout the entire City and areas of Bloomington. Where RUA provides water service, both water and sewer services are billed together. For delinquent accounts, the RUA can impose penalties and shut off water services to promote payment, per Rialto Municipal Code Section 12.08. However, there are areas of the City where either the West Valley Water District or the Fontana Water Company provides water services and the RUA only bills for sewer service. The sewer-only accounts have high delinquency rates, as the RUA cannot disconnect services for lack of payment.

To collect sewer-only accounts more effectively, the Rialto Municipal Code Section 12.08.201 was amended to allow for placement of delinquent charges on property tax bills through the County Tax Collector’s Office. The Ordinance approved on June 19, 2007, provides a method for collecting delinquent accounts like the lien placement process used for solid waste delinquent accounts.

ANALYSIS/DISCUSSION:

During the spring of each year, Staff develops a list of properties to be levied for delinquent sewer fees. Once the list of properties to be levied has been completed, the list will be compared with the most recent County property ownership data. Changes will be incorporated into the final list which is then submitted to the County. This list is comprised of accounts where the account owner is delinquent on sewer payments. Once created, this list is presented to the City Council/Rialto Utility Authority Board for permission to place the delinquent sewer fees on the tax rolls.

To meet the County submittal deadline, several things must occur, most notably, a list must be presented to the City Council/Rialto Utility Authority Board of properties meeting the criteria for placement of liens with the County and a public hearing must be held to approve the levy.

Notification letters will be sent to the delinquent account holders and the property owner, if different, alerting them of the RUA’splan to place the delinquent charges on the property tax roll and giving City of Rialto Printed on 5/22/2026Page 1 of 2
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31 File #: WS-26-0366, Version: 1, Agenda #:
alerting them of the RUA’splan to place the delinquent charges on the property tax roll and giving them one last opportunity to pay.

The last date for a customer to pay their delinquent sewer bill before placement on the tax rolls is June 25, 2026. It should be noted that if a customer pays their delinquent wastewater bill prior to the deadline, their property and the levy amount will be removed from the list provided to the county.

Once the list of properties to be levied has been completed, the list will be compared with the most recent County property ownership data. Changes will be incorporated into the final list, which is then submitted to the County.

SCHEDULE/LEVY PROCESS
If the City were to post levies for this fiscal year, the following tasks must be completed by the deadlines listed below:

The total levy amount for Fiscal Year 2025-2026 is estimated to be approximately $1,204,349, representing approximately 1,794 delinquent accounts. Compared to last year’s levy amount of $1,189,751, this represents an approximate increase of 1.2%. The number of delinquent accounts increased from 1,429 accounts in the prior year to 1,794 accounts this year. Staff’spreliminary review indicates that approximately 65% of the delinquent accounts are repeat accounts. As customers continue making payments through the end of the fiscal year, staff anticipates the final percentage of repeat accounts to increase to approximately 80%-85%.

FINANCIAL IMPACT
Operating Budget Impact
The levy is comprised of accounts whose owners are the same as the current property owners per the county-secured tax roll. The potential total levy amount is estimated at $1,204,349 with approximately 1,794 delinquent accounts.

Capital Improvement Budget Impact
There is no impact to the Capital Improvement Budget.

City of Rialto Printed on 5/22/2026Page 2 of 2
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32 City of Rialto
Legislation Text
File #: WS-26-0369, Version: 1, Agenda #:

For Water Subcommittee Meeting May 28, 2026
TO: Water Subcommittee Members
APPROVAL: Tanya Williams, City Manager
FROM: Nicole Hemmans, Senior Administrative Analyst Utilities Updates:

1. Veolia’s Monthly Operations Reports (MOR):
a. May 2026 (reporting period March 2026)
City of Rialto Printed on 5/22/2026Page 1 of 1
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33 RWS/Veolia
Monthly Operation
Report
May 2026
Reporting period March 2026
34 RIALTO

CUSTOMER SERVICE & REVENUE

MONTHLY OPERATIONS REPORT

Reporting Period:

March 2026

Prepared for: Rialto Water Services
Prepared by: Veolia Water West Operating Services
35 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 ................................................................................................................................ 5 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

36 3

I. CUSTOMER SERVICE SUMMARY
During this reporting month, the Customer Service team provided call service level of

92.8%. Out of 1,247 inbound calls answered 1,157 answered within the first 30 seconds.

Water consumption has decreased by 6.9% when compared against previous month. When compared against last year, consumption has increased by 1.4%.

Sewer revenue has decreased by 2.2% compared to the prior month and increased by less than 1.0% from last year.

II. CALL CENTER PERFORMANCE
During this reporting month, service level was 92.8% with 1,157 out of 1,247 being answered within the first 30 seconds. Overall average wait time was thirty-two (32) seconds.

III. AUTOMATED SERVICES
About 13,310 or 57.7% of the rate payers have created log-ins to access their accounts online. Of these customers, with online access, 51.1% have chosen the e-bill option. This e- bill participation is 6.5% increase from March of the prior year.

91.8% 89.1% 88.0% 85.0% 86.7%

80.1%

90.5% 87.8% 86.6% 88.7% 93.0%

85.0%

92.8%

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
Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Jan-26 Feb-26 Mar-26 Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Jan-26 Feb-26 Mar-26 Answer in 30 Sec 1,183 1,148 1,120 1,256 1,263 1,043 1,277 1,212 1,090 1,257 1,124 973 1,157 Calls Answered 1,288 1,287 1,272 1,479 1,456 1,294 1,411 1,379 1,258 1,417 1,208 1,148 1,247 Service Level 91.8% 89.1% 88.0% 85.0% 86.7% 80.1% 90.5% 87.8% 86.6% 88.7% 93.0% 85.0% 92.8% Call Center Performance
Answer in 30 Sec Calls Answered Service Level
Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Jan-26 Feb-26 Mar-26 Number of Bills 22,657 22,694 22,705 22,770 22,792 22,838 22,864 22,875 22,927 22,913 23,045 22,987 23,031 Number of Bill Adjustments (during billing) 29 25 15 18 29 10 7 8 11 27 47 47 32 Automated Over the Phone Payments 2,509 2,454 2,276 2,578 2,596 2,344 2,531 2,560 2,089 2,404 2,326 2,339 2,656 Online Payment 9,912 9,798 8,434 9,800 10,260 8,691 11,224 10,369 7,614 10,432 8,771 10,145 11,774 E-bill Participants 6,069 5,969 6,000 6,074 6,134 6,185 6,233 6,290 6,332 6,372 6,401 6,421 6,476 Auto Pay Participants (New Portal) 4,536 4,554 4,630 4,696 4,728 4,776 4,834 4,881 4,923 4,978 5,025 5,083 5,137 PayNearMe 99 97 88 88 88 88 103 85 80 80 60 81 76
37 4

IV. CONSUMPTION & BILLING
A. Consumption
Water consumption has decreased by 6.9% when compared against previous month.

When compared against last year, consumption has increased 1.4%.

Low consumption is due to billing adjustment for a large water bottling company. The City has requested change from Category II to Category III.

January Feburary March April May June July August Septembe r October November December
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 2026 Water 253,829 221,382 206,070
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 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 2026 Sewer 60,658 60,373 45,113
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)
38 5

B. Billing
A total of 23,031 bills were mailed or sent out electronically in March. Billing accuracy was

99.8% with thirty-two (32) requiring adjustments after bill generation.

V. REVENUE & AGING
A. Revenue
Water revenue has decreased 3.8% when compared against the prior month and increased

1.4% when compared against previous year. Sewer revenue has decreased by 2.2% compared to the prior month and increased by less than 1.0% 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 Septembe r October November December
2024 Water Sales $912,498. $852,016. $881,079. $864,955. $930,910. $1,229,95 $1,194,46 $1,291,72 $1,510,71 $1,170,74 $1,297,36 $1,038,61 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 2026 Water Sales $1,180,870 $1,095,263 $1,053,630
$-
$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 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 2026 Sewer Sales $2,408,925 $2,404,957 $2,351,579
$1,950,000.00
$2,000,000.00
$2,050,000.00
$2,100,000.00
$2,150,000.00
$2,200,000.00
$2,250,000.00
$2,300,000.00
$2,350,000.00
$2,400,000.00
$2,450,000.00
$2,500,000.00
Dollars ($)
Annual Sewer Sales
39 6

B. Aging
The total aging balance has decreased by 6.6% see first table below. For balances >30-days only, water has decreased 23.5% and wastewater has increased by 7.5%. Sewer balances are expected to continue rising until tax roll in year 2026.

C. Bad Debt
Seven (7) accounts were sent to collections for a total amount of $4,114.39. 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
$4,000,000.00
Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Jan-26 Feb-26 Mar-26 Aging Balances in Dollars ($)
Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Jan-26 Feb-26 Mar-26 WTR $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 $1,656,743 $1,604,777 $1,307,087 SWR $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 $3,152,037 $3,287,157 $3,260,863 Historical Aging Totals
Water and Sewer
$0
$200
$400
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
$2,000
Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Jan-26 Feb-26 Mar-26 Thousands
Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Nov-25 Dec-25 Jan-26 Feb-26 Mar-26 WATER $478,675 $359,409 $396,223 $485,523 $578,110 $683,117 $661,838 $642,879 $607,605 $670,880 $679,989 $703,428 $538,327 SEWER $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 $1,197,669 $1,415,022 $1,520,726 Aging Balances Over 30 Days Water and Sewer
(April 2021 forward contains both consumption and meter charges) 40 7

VI. SERVICE ORDERS
361 service orders were initiated by the customer service team during the reporting month. Of this total, 87 service orders or 24% were due to occupant changes. 230 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 128 disconnections were performed during the March 2026.

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 March 2026 is $ 4,757,000 whereas Non -Rate Revenue is $ 212,000; Utility Revenue is $4,486,000 and Tax / Ambulance Revenue at $59,000.

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 March 2026 and March 2025 are $54,000 and $90,000 respectively. The large variance in collection of UUT charges is due to the City exempting UUT charges to the Residential customers beginning Jan uary 2025 through December 2025. Ambulance Revenue is also collected on behalf of the City of Rialto totaling $5,000 in March 2026 and $5,000 in March 2025.

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 (Bloomington). 41 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 for $2,073. 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 Agreement on January 23, 2021. This agreement pertains to the use of its interest in the SARI Line and di scharge 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 monie s from the various developments, which is then distributed to RWS. There was no DIF payment received in March 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 effec t. For the 2024- 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 bille d annually for Rialto Well #3’s summertime electricity costs based on peak usage.
42 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 MARCH 2026 %
Carrier Deposits Cash deposits prepared per day for transport to US Bank. 22 $ 146,021 3.52% Remote Deposits Scanned batches of checks payments made at the customer service counter 22 538,267 12.98% EBOX Batches of electronic customer payments posted
to customer accounts at US Bank. 22 324,116 7.81%

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 15,556 2,316,170 55.84% Lockbox Deposits Batches of customer payments mailed in to US Bank's lockbox 22 813,647 19.62% Pay Near Me
Cash payment service that allows customers to pay
at a local 7-Eleven, CVS, Walmart or Family Dollar
stores. 80 9,326 0.22% Total Revenue per Bank $ 4,147,548 100.00% Recon to RUA Recap:

Adj detailed in RUA 609,646
Prior mo. Correction
RUA increase in Cash $ 4,757,194
43 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 JAN 2026 FEB 2026 MAR 2026 Total % Carrier Deposits 144,793$ 140,286$ 155,654$ 147,234$ 103,022$ 142,623$ 127,207$ 133,155$ 146,021$ 1,239,994$ 3.40% Remote Deposits 499,489 241,420 686,008 995,009 311,584 762,404 510,265 1,020,346 538,267 5,564,792$ 15.28% EBOX 407,888 286,741 367,169 378,253 237,351 341,059 269,016 296,667 324,116 2,908,262$ 7.98% Paymentus, IVR, Credit Cards 2,118,383 1,853,657 2,370,061 2,278,360 1,572,041 2,080,662 1,722,987 2,014,094 2,316,170 18,326,415$ 50.31% Lockbox Deposits 1,176,928 904,658 1,003,875 1,162,475 707,921 848,106 822,102 855,632 813,647 8,295,344$ 22.77% Pay Near Me 11,821 11,616 14,142 11,316 9,254 11,254 5,868 10,941 9,326 95,539$ 0.26% Total Revenue to Bank 4,359,302$ 3,438,377$ 4,596,910$ 4,972,646$ 2,941,173$ 4,186,107$ 3,457,446$ 4,330,835$ 4,147,548$ 36,430,344$ 100.00% NSF (10,757) (15,745) (17,442) (15,892) (14,628) (20,682) (31,415) (19,746) (15,869) (162,175)$ Net deposits 4,348,546$ 3,422,632$ 4,579,468$ 4,956,754$ 2,926,545$ 4,165,425$ 3,426,031$ 4,311,089$ 4,131,679$ 36,268,169$ Mar 2026 Mar 2025 Variance
UUT Water 21,796$ 30,952$ (9,156)$
UUT Sewer 31,851 58,902 (27,052)
Ambulance 5,357 5,093 264
Total 59,003$ 94,947$ (35,944)$
Mar 2026 Mar 2025 Variance
Non-Rate / Extra Territorial
Revenue 212,224$ 258,641$ (46,417)$
Utility Revenue 4,485,967$ 3,686,384$ 799,583
Total 4,698,191$ 3,945,025$ 753,166$
44 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 Jan 2026 Feb 2026 Mar 2026 Total Non-Rate Revenue
Cell Tower Rent,Llease 21,485 17,154 15,080 53,897 13,580 14,324 4,330 14,897 48,457 203,205 Interest Income - - - - - - - - - -

NRR-FOG - - - - - - - - - - Municipal Water Sales - - - - - 349,264 - - - 349,264 Extra Terr- Sewage 169,483 6,711 107,820 583,011 35,551 174,217 170,577 257,617 144,260 1,649,247 Non-Rate Misc Water - - - - - - 1,032 - - 1,032 Abatement of Expenses - - - - - - - - - - Water Meter Lost/Damaged/Repl 22,650 17,176 13,295 16,075 14,366 1,557 10,659 10,065 10,340 116,184 Misc Fees - New Occ., Same Day Svc 10,815 7,182 7,522 9,355 6,949 7,834 6,896 6,779 9,154 72,485 Miscellaneous Revenue - Sewer - - - - - 5 - - - 5 NSF - - - - - - 40 - 13 53 Total Non-Rate Revenue 224,433$ 48,223$ 143,717$ 662,339$ 70,447$ 547,200$ 193,534$ 289,358$ 212,224$ 2,391,475 Utility Revenue
Water Penalty 30,460 33,752 31,754 37,988 34,640 29,186 27,933 28,838 33,696 288,246 Sewer Penalty 74,191 48,802 42,100 54,993 40,418 43,022 48,483 41,187 54,314 447,511 Turf Removal, Hi-Eff Rebate (100) - - - - - - (100) - (200) Water Deposits Billed 16,142 15,863 16,027 17,938 13,085 7,527 16,427 13,248 14,730 130,987 Hydrant Deposits 315 158 161 68 - 197 - 702 - 1,601 Sewer Deposits Paid - - - - - - - - - - Sewer Deposits Billed 16,204 16,667 15,480 15,055 12,065 9,677 12,804 12,711 15,481 126,144 Water 1,329,427 1,148,584 1,723,704 1,493,556 835,225 1,291,024 970,084 1,197,349 1,381,042 11,369,995 Sewer 2,760,649 1,949,745 2,492,623 2,526,711 1,594,009 2,385,765 2,006,500 2,296,925 2,521,401 20,534,328 Unapplied Credits 26,588 50,012 109,984 80,529 180,113 (93,772) 63,577 (141,671) (137,801) 137,559 Bad Debt Sewer - - - - - - - 985 292 1,277 Bad Debt Water - - - - - - - - - - Tax Roll Sewer - - - - - - - - 602,811 602,811 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$ 3,145,808$ 3,450,175$ 4,485,967$ 33,640,259$ Total Non-Rate + Utility Rev. 4,478,309 3,311,805 4,575,549 4,889,178 2,780,002 4,219,825 3,339,342 3,739,533 4,698,191 36,031,734 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
March 2026 4,757,194 15,364 3,327,501 1,414,328 4,757,194 (609,646) 4,147,548 March 2025 4,039,972 10,648 2,715,224 1,314,100 4,039,972 99,492 4,139,464 45 12

K. Non-Rate and Extraterritorial Customer Accounts Receivable Aging

AT&T makes annual payment on cell tower rent.

Social Science Service (Cedar House) has been contacted for the outstanding balance.

City of Fontana is current with its obligations.

Colton Unified School District has no balance due.

County of San Bernardino has been contacted for the unpaid balance.

Rialto Bioenergy Solutions has been contacted regarding the unpaid rent.

Vertical Bridge Holdco, LLC and Sprint: Vertical Bridge and Sprint have been co ntacted for open Invoices as well.

San Bernardino County Waste System Division’s has no balance due.

Name
Total as of
3/31/2026 Current 31 to 60 days 61 to 90 days >90 days
AT&T - Easton -$ - - - - Cedar House 13,971 7,166 - 6,805 - CITY OF FONTANA 131,182 131,182 - - - Colton Unified School District - - - - - County of San Bernardino-CSA 70 BL 41,895 20,948 - 20,948 - Rialto BioEnergy Facilities 138,500 101,000 - 37,500 - Sprint-Nextel 5,530 - - - 5,530 San Bernardino Co Waste System Div - - - - - SB Valley Mun Water District - - - - - Vertical Bridge Holdco, LLC (CIG) 16,035 2,830 2,830 2,830 7,544 Grand Total 347,113$ 263,126$ 2,830$ 68,083$ 13,074$ 46 1

RIALTO WATER

MONTHLY OPERATIONS REPORT

March 2026

Prepared for: Rialto Water Services
Prepared by: Veolia Water West Operating Services

47 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, Customer call outs , Hydrant hits. 13
B. Major Equipment and/or Machinery Outages 14
IX. RAINFALL TOTALS 14

48 3

I. EXECUTIVE SUMMARY
In the month of March, the water distribution network achieved compliance with all permit requirements. There were no sample anomalies that required secondary sampling.

There were no significant issues with water availability and the purchasing of water remained consistent and daily equalization tank levels remained at anticipated volume for customer availability.

A. Water Production Totals
Total Water Delivered into the Rialto Water System:

March 2026 DAILY PRODUCTION TOTALS IN ACRE FEET
Delivered via BLF
Purchased
Date Chino 2 City 2 Rialto 3 Rialto 5 Miro 3 EW-1 City 4A B6-9 Cactus(A) ORTP(B) TOTAL(C) 3/1/26 5.39 0.00 0.00 0.00 8.47 6.67 10.69 7.97 4.09 0.00 43.27 3/2/26 4.27 0.00 0.00 0.00 7.49 5.87 7.48 9.41 3.19 0.00 37.72 3/3/26 5.26 0.00 0.00 0.00 8.93 6.69 9.08 7.62 3.70 0.00 41.28 3/4/26 5.05 0.00 0.00 0.00 7.94 5.95 4.85 5.81 3.12 0.00 32.72 3/5/26 5.62 0.00 3.49 0.00 1.84 6.43 4.70 3.28 2.87 0.00 28.24 3/6/26 4.87 0.00 4.38 0.00 0.00 6.03 8.99 4.84 2.80 0.00 31.92 3/7/26 5.97 0.00 5.51 0.00 0.00 6.26 9.66 7.81 3.86 0.00 39.06 3/8/26 4.18 0.00 5.88 0.00 0.00 6.75 9.70 8.26 4.48 0.00 39.25 3/9/26 6.50 0.00 5.56 0.00 0.00 5.85 8.76 5.37 3.12 0.00 35.16 3/10/26 4.22 0.35 6.18 0.00 0.00 0.26 8.40 7.92 3.47 0.00 30.80

3/11/26 4.87 7.85 6.29 0.00 0.00 0.00 7.88 5.33 3.31 0.00 35.52 3/12/26 4.98 8.10 6.24 0.00 0.00 0.00 9.17 2.80 3.97 0.00 35.27 3/13/26 5.56 6.20 6.50 0.00 0.00 0.00 9.59 0.00 3.42 0.00 31.27 3/14/26 6.47 8.13 7.23 0.00 0.00 0.00 10.50 4.29 4.57 0.00 41.19 3/15/26 5.12 8.92 5.92 0.00 0.00 0.00 8.71 0.00 4.96 0.00 33.63 3/16/26 5.44 7.99 0.00 0.00 5.47 0.00 9.36 4.04 4.25 0.00 36.55 3/17/26 4.02 7.91 0.00 0.00 5.84 0.00 6.95 3.12 3.70 0.00 31.54 3/18/26 4.96 8.35 0.00 0.00 6.25 0.00 10.10 4.91 4.73 0.00 39.30 49 4

3/19/26 5.23 6.71 0.00 0.00 5.97 0.00 8.71 3.37 3.81 0.00 33.81 3/20/26 5.30 8.88 0.00 0.00 6.63 0.00 9.25 0.76 4.13 0.00 34.95 3/21/26 5.90 9.93 0.00 0.00 8.03 0.00 7.57 2.00 5.46 0.00 38.90 3/22/26 5.39 9.42 0.00 0.00 8.19 0.00 11.15 3.79 5.10 0.00 43.04 3/23/26 5.00 5.57 4.11 0.00 5.14 0.00 4.41 1.08 4.91 0.00 30.23 3/24/26 4.20 9.49 4.75 0.00 3.47 0.00 10.02 2.43 3.90 0.00 38.27 3/25/26 5.62 8.87 3.88 0.00 4.52 0.00 6.77 1.38 4.89 0.00 35.93 3/26/26 5.53 9.45 0.00 0.00 6.36 0.00 8.97 1.40 4.75 0.00 36.47 3/27/26 4.98 9.03 0.99 0.00 5.84 0.00 9.22 1.52 4.22 0.00 35.81 3/28/26 5.33 10.09 0.00 0.00 6.68 0.00 11.00 7.81 6.29 0.00 47.19 3/29/26 4.73 11.43 0.00 0.00 6.47 0.00 8.85 2.46 3.76 0.00 37.70 3/30/26 5.53 7.51 0.00 0.00 6.39 0.00 8.18 2.41 5.69 0.00 35.71 3/31/26 4.45 9.39 0.00 0.00 8.67 0.00 8.28 3.24 3.81 0.00 37.84

TOTAL 159.96 179.56 76.91 0.00 134.60 56.77 266.97 126.42 128.33 0.00 1129.52 MIN 4.02 0.00 0.00 0.00 0.00 0.00 4.41 0.00 2.80 0.00 28.24 MAX 6.50 11.43 7.23 0.00 8.93 6.75 11.15 9.41 6.29 0.00 47.19 AVE 5.15 5.79 2.48 0.00 4.34 1.83 8.61 4.08 4.14 0.00 36.44

(A) - Measured at point of connection of Cactus Reservoir site including production from City 4A. Amount may vary compared to billing.
(B) - Measured at point of connection at Cedar Reservoir. Amount may vary as compared to billing. (C) - City 4A is not included in total. It has been accounted for in the purchased total.

50 5

DATE Booster 1 Booster 2 Booster 3 Booster 4 Booster 5 Booster 6-9 Booster 10 Booster 11 3/1/26 0.00 0.00 6.61 0.00 2.22 7.97 0.00 0.00
3/2/26 0.00 0.00 3.03 0.00 0.00 9.41 0.00 0.00
3/3/26 0.00 0.00 5.77 0.00 0.00 7.62 0.00 0.00
3/4/26 0.00 0.00 0.66 0.00 0.00 5.81 0.00 0.00
3/5/26 0.00 0.00 0.44 0.00 1.43 3.28 0.00 0.00
3/6/26 0.00 0.00 3.39 0.00 1.42 4.84 0.00 0.00
3/7/26 0.00 0.00 4.86 0.00 0.07 7.81 0.00 0.00
3/8/26 0.00 0.00 6.17 0.00 0.00 8.26 0.00 0.00
3/9/26 0.00 0.00 3.01 0.00 0.00 5.37 0.00 0.00
3/10/26 0.00 0.00 7.44 0.00 0.00 7.92 0.00 0.00
3/11/26 0.00 0.00 7.36 0.00 1.26 5.33 0.00 0.00
3/12/26 0.00 0.00 8.39 0.00 4.27 2.80 0.00 0.00
3/13/26 0.00 0.00 3.82 0.00 3.41 0.00 0.00 0.00
3/14/26 0.00 0.00 8.53 0.00 5.09 4.29 0.00 0.00
3/15/26 0.00 0.00 6.59 0.00 8.13 0.00 0.00 0.00
3/16/26 0.00 0.00 8.28 0.00 1.67 4.04 0.00 0.00
3/17/26 0.00 0.00 7.19 0.00 0.41 3.12 0.00 0.00
3/18/26 0.00 0.00 9.82 0.00 0.00 4.91 0.00 0.00
3/19/26 0.00 0.00 6.53 0.00 4.60 3.37 0.00 0.00
3/20/26 0.00 0.00 8.51 0.00 4.72 0.76 0.00 0.00
3/21/26 0.00 0.00 5.33 0.00 6.01 2.00 0.00 0.00
51 6

3/22/26 0.00 0.00 10.11 0.00 3.01 3.79 0.00 0.00
3/23/26 0.00 0.00 6.52 0.00 1.60 1.08 0.00 0.00
3/24/26 0.00 0.00 7.75 0.00 0.79 2.43 0.00 0.00
3/25/26 0.00 0.00 7.12 0.00 3.37 1.38 0.00 0.00
3/26/26 0.00 0.00 7.91 0.00 4.94 1.40 0.00 0.00
3/27/26 0.00 0.00 0.00 0.00 2.51 1.52 0.00 0.00
3/28/26 0.00 0.00 12.96 0.00 9.42 7.81 0.00 0.00
3/29/26 0.00 0.00 8.53 0.00 1.79 2.46 0.00 0.00
3/30/26 0.00 0.00 0.00 0.00 3.72 2.41 0.00 0.00
3/31/26 0.00 0.00 16.49 0.00 0.87 3.24 0.00 0.00
TOTAL 0.00 0.00 199.11 0.00 76.72 126.42 0.00 0.00
MIN 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
MAX 0.00 0.00 16.49 0.00 9.42 9.41 0.00 0.00
AVE 0.00 0.00 6.42 0.00 2.47 4.08 0.00 0.00

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
Well
Depth to
Pump
Historical
Maximum Depth to
Water Mar Apr May Jun Jul Aug Oct Nov Dec Jan Feb Mar
Chino #1 (X) 580' 429' 414' 413' 413' 413' 411' 410' 410' 410' 411’ 411’ 411’ 410' Chino #2 493' 369' 338' 335' 337' 334' 334' 333' 331' 333' 334’ 334’ 321’ 321' City #1 260' 392' 122' 119' 117' 119' 121' 120' 120' 122' 122’ 117’ 121’ 125' City #2 500' 402' 130' 128' 122' 129' 131' 125' 126' 126' 126’ 128’ 130’ 410' City #3 (X) 525' 505' 416' 416' 414' 417' 418' 418' 417' 417’' 417’ 417’ 420’ 357' City #4A 528' 406' 375' 373' 362' 367' 370' 366' 360' 359' 363’ 362’ 362’ 314' 52 7

City #5 (X) 385' 364' 318' 318' 316' 316' 316' 316' 317' 318' 319’ 317’ 317’ 564' Rialto #1 (X) 650' 588' 569' 565' 563' 564' 565' 562' 563' 566' 566’ 565’ 566’ 496' Rialto #2 (X) 550' 502' 495' 502' 496' 498' 498' 497' 496' 494' 496’ 495’ 496’ 469' Rialto #3 569' 478' 472' 472' 470' 470' 472' 471' 471' 474' 474’ 474’ 475’ 410' Rialto #4 (X) 450' 418' 416' 415' 415' 414' 413' 414' 413' 412' 412’ 412’ 411’ 383' Rialto #5 560' 387' 384' 386' 386' 387' 387' 387' 386' 386' 386’ 386’ 385’ 481' Rialto #7 (X) 362' 359' 353' 356' 354' 356' 357' 357' 357' 359’ 359’ 359’ 482' Miro #3 563' 492' 484' 483' 483' 481' 480' 479' 480' 480' 478’ 481’ 480’ 472' EW-1 650' 475' 475' 474' 475' 460' 471' 467' 480' 477’ 478’ 479’ 357'

(X) = In-Active Well

II. REGULATORY
All State of California and public health agency regulatory requirements were met, 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
53 8

P= Present A= Absent mg/L = parts per million μg/L = parts per billion

Sample Date: 3/11/26 Sample Site Location Results
Type of Sampling Chino 2 City 2 City 4A Rialto 3 Rialto 5 Miro 3 EW-1 BLF Cactus BLF 6-9 OPRTP
Total Coliform A A A A A A A A A A
E. Coli A A A A A A A A A A
Nitrate as N 3.3 2.5 5.8
Perchlorate (CLO4) <1.0* 4.9* <1.0 7.3* 110*
Total Dissolved
Solids 230 210 300 250 230 210 240 330 320 200

*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).

A. Sample Site Location Results
Rialto Distribution Sample Results
March 2026
Sample Location Free Cl Res
(Field) Total Coliform E. Coli Apparent Color Odor Threshold Turbidity CYCLE 1 -
3/04/26 mg/l P/A P/A Color Units TON NTU
335 W. Rialto 1 A A <3.0 1 0.39
1228 W. Merrill 0.9 A A <3.0 1 0.17
256 N. Fillmore 0.9 A A <3.0 1 <0.10
54 9

987 W. Grove 1 A A <3.0 1 0.25
978 N. Driftwood 1 A A <3.0 1 <0.10
1451 N. Linden 1 A A <3.0 1 <0.10
469 W. Jackson 1.3 A A <3.0 1 0.18
935 E. Mariposa 1.1 A A <3.0 1 <0.10
1000 N. Joyce 1.1 A A <3.0 1 <0.10
766 N. Chestnut 1.2 A A <3.0 1 0.15
149 W. Victoria 1 A A <3.0 1 <0.10
313 E. McKinley 1.1 A A <3.0 1 0.32
609 E. South 1.1 A A <3.0 1 <0.10
273 E. Alru 1.1 A A <3.0 1 0.36
1161 S. Lilac 1.2 A A <3.0 1 0.27
101 E. Valley 1.1 A A <3.0 1 <0.10
CYCLE 2 -
3/10/26 mg/l P/A P/A Color Units TON NTU
210 N. Park 1.1 A A
101 S. Larch 1.1 A A
320 N. Wisteria 1.4 A A
861 W. Grove 1.2 A A
1168 N. Glenwood 1.3 A A
1320 N. Fitzgerald 1.1 A A
860 N. Willow 1.3 A A
Sample Location Free Cl Res
(Field) Total Coliform E. Coli Apparent Color Odor Threshold Turbidity CYCLE 2 CONT.
- 3/10/26 mg/l P/A P/A Color Units TON NTU
209 E. Cornell 1.4 A A
55 10

643 E. Margarita 1.3 A A
1170 N. Terrace
Rd. 1.1 A A
681 E. Erwin 1.2 A A
402 E. Merrill 1.2 A A
261 W. Wilson 1 A A
532 S. Iris 1.4 A A
281 W. Hawthorne 1.2 A A
379 W. Valley 1.2 A A

CYCLE 3 -
3/17/26 mg/l P/A P/A Color Units TON NTU
236 N Willow 1.1 A A
775 E. Foothill 1.1 A A
878 N. Primrose 1.2 A A
369 E. Van
Koevering 1.1 A A
274 W. Valencia 1.2 A A
1566 N. Fillmore 1.1 A A
932 N. Idyllwild 1.2 A A
644 N. Smoketree 0.9 A A
605 W. Rosewood 1.1 A A
1189 W. Second 1.1 A A
775 W. Rialto 1.1 A A
211 E. Wilson 1 A A
595 E. Huff 1 A A
56 11

Sample Location Free Cl Res
(Field) Total Coliform E. Coli Apparent Color Odor Threshold Turbidity CYCLE 3 CONT.
- 3/17/26 mg/l P/A P/A Color Units TON NTU
1005 S. Riverside 1.2 A A
794 S. Verde 1.3 A A
1055 W.

Bloomington 1.4 A A
CYCLE 4 -
3/25/26 mg/l P/A P/A Color Units TON NTU
375 S. Cactus 1.8 A A
101 S. Linden 1.6 A A
234 N. Larch 1.2 A A
575 N. Driftwood 1.2 A A

1355 W. Shamrock 1.2 A A

992 N. Yucca 1.2 A A
481 W. Cornell 1.2 A A
158. E. Shamrock 1.2 A A

749 E. Holly 1.2 A A
545 E. Victoria 1.5 A A
200 N. Sycamore 1.3 A A

407 E. Allen 1.2 A A
399 E. Montrose 1.2 A A

856 S. Orange 1.3 A A
911 S. Cactus 1.2 A A
220 W. Valley 1.2 A A

57 12

B. Violations
No violations were received during this reporting period.

C. 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 purchasing low TDS water while adhering to the overall water supply strategy and meeting system demands. The TDS was on average 257 mg/L for the month of March as compared to 267 mg/L in February. 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 2888 gallons of sodium hypochlorite was used in March as compared to 2082 gallons used in February.
58 13

V. ELECTRICAL USE
Southern California Edison (SCE) data for March 2026. We will provide the data as it is received, thus will include yearly usage received to date.

SCE kWh
Year Month
Billed
Usage
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
2026 January 592,795
2026 February 668,944
2026 March 601,554
VI. WATER QUALITY COMPLAINTS
No complaints were received during this reporting period.

59 14

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 the BLF and its production is included in deliveries from that shared transmission line whe n 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
City well #2 will be out of service for 4 weeks to replace the upper pump column bearing; will return into service by March 2026. City well #2 returned to service on March 10th
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 March.

Valve Turning Progress
Valves
Turned
2020 530
2021 340
2022 463
2023 750
2024 379
2025 338
2026 249
60 15

B. Hydrant Flushing
There are 63 hydrant/dead ends that are flushed annually to maintain water quality.

All annual flushing will be completed by December 2026.

Hydrant/Dead End Flushing
Progress
2026
January 0
February 0
March 0
April 0
May 0
June 0
July 0
August 0
September 0
October 0
November 0
December 0
Total 0
Progress % (100)
C. Sanitary Survey
DDW performed field site visits 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 March:
• Preventive Maintenance –268
• Corrective Maintenance –0
• Predictive Maintenance –0
– 268 PMs planned for April 2026
61 16

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 March:

Main Line: 2 Service Line:5 Hydrant Replacements:1
Angle Meter Stops:5 Meter Box & Lid
Replacements:3
Meter Leaks/
Replacements:

B. Customer Call Outs, Hydrant hits
Customer Call Outs:13 Meter Leaks:5 Requests for Water to be turned on/off:12
Leaks in the street:3 Leaking Fire Hydrant:3 Hit/shed hydrant: 1

C. Major Equipment and/or Machinery Outages
EW-1 Well is out of service for repair, will be back in service by first week in April

62 17

IX. RAINFALL TOTALS

CITY OF RIALTO

RAINFALL FOR PAST FIVE YEARS

YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC TOTAL 2021 2.55 0.05 1.13 0.00 0.00 0.00 0.53 0.00 0.00 0.55 0.00 7.27 12.08 2022 0.00 0.00 0.77 0.45 0.03 0.00 0.00 0.00 0.24 0.38 2.15 1.80 5.82 2023 5.06 4.14 7.73 0.20 0.59 0.00 0.00 2.62 0.00 0.09 0.60 1.18 22.21 2024 1.00 10.38 1.87 0.53 0.34 0.00 0.00 0.00 0.00 0.00 0.45 0.00 14.57 2025 0.21 3.68 2.47 0.49 0.29 0.00 0.00 0.00 0.12 0.93 4.05 2.95 15.19 RAINFALL AMOUNT FOR THE YEAR OF 2025 = 15.19 inches
AVG. ANNUAL RAINFALL FOR LAST FIVE YEARS = 13.97 inches AVG. RAINFALL FOR SAN BERNARDINO COUNTY FOR THE LAST 100 YEARS = 16.07 inches 2026 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total Totals 2.59 3.36 0.00 5.95

63 18

Weather
Date Clear P.Cloudy Cloudy Notes Rainfall (inch)
3/1/26 X
3/2/26 X
3/3/26
3/4/26 X
3/5/26 X
3/6/26 X
3/7/26 X
3/8/26 X
3/9/26 X
3/10/26 X
3/11/26 X
3/12/26 X
3/13/26 X
3/14/26 X
3/15/26 X
3/16/26 X
3/17/26 X
3/18/26 X
3/19/26 X
3/20/26 X
3/21/26 X
3/22/26 X
3/23/26 X
3/24/26 X
3/25/26 X
3/26/26 X
64 19

3/27/26 X
3/28/26 X
3/29/26 X
3/30/26 X
3/31/26 X

65 RIALTO WASTEWATER

MONTHLY OPERATIONS REPORT

Reporting Period:

March 2026

Prepared for: Rialto Water Services
Prepared by: Veolia Water West Operating Services
66 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
67 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 four residential call-outs for sewer collection issues.

1. Collection System/Customer Service Log

a. Collections group activities this month:

Category Current Month
Statistics
Prior Month Statistics 2026 Year to Date
Statistics
Sanitary sewers are cleaned using the
conventional method, including feet, which
includes “Hot spot cleaning.”
32,376 15,900 74,723
Sanitary sewers assessed using the SL-RAT
method, feet 0 0 0
CCTV Inspection, miles (26 is the annual goal)* 3.25 2.84 9.27 Manhole Inspections 4 0 4
USA Dig Alert Markings, count 27 16 67
Residential call-outs 2 1 7
Sanitary sewer overflows 0 0 0

b. S.S.O. dates:
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 4
Lost Time Incidents count* 0
68 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 2,035 days.

5. Biosolids, Chemicals, and Utilities

a. Monthly Biosolids Production

Biosolids Current Month
Statistics
Prior Month Statistics 2026 Year-to-Date
Statistics
Wet Tons Produced 1,248.67 1,019.35 3,944.39

b. Monthly Chemical Consumption

Chemical Current Month
Gallons Used
Prior Month
Gallons Used
Sodium Hypochlorite, Tertiary Disinfection 28,925 32,890 Sodium Bisulfite, Discharge Dechlorination 11,525 11,231 Ferrous Chloride, Digester Gas Conditioning 4,156 3,743 Polymer, Gravity Belt Thickener 364 310
Polymer, Belt Filter Press 714 718
Alum, Tertiary Filters 0 0

c. Monthly Utilities Consumption

Utility Current Month
Statistics
Prior Month Statistics
Electricity WWTP, KWH ** 413040
Electricity Lilac LS, KWH 304 948
Electricity Sycamore LS, KWH 493 500
Electricity Ayala LS, KWH 5528 6191
Electricity Agua Mansa LS, KWH ** 2260
Electricity Cactus LS, KWH 1140 1752
Electricity Ramrod LS, KWH ** 564
Frisbee Park LS, KWH 717 725
El Rancho Verde LS, KWH ** 2236
Natural Gas WWTP, Therms 6493 6394
* LS is in bypass mode, pending CIP completion
** SCE has not updated this account.

6. Odor Complaints Received/Actions Taken
Complaint at 119 E. Foothill Blvd. Staff responded within thirty minutes. No odors observed. Gravity sewer line was inspected and flowing freely, no grease or abnormal odors present. The sewer line was also inspected with CCTV. No odor sources found.

Complaint at 1410 W Foothill Blvd. Staff responded no odors observed, the sewer line was free flowing.

7. Major Equipment and/or Machinery Outages
● Sludge Holding Tank
● Aeration Basin #3 is currently offline.
● Chlorine Contact Tanks #1 and #2 are offline

69 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
No notices were received.

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
3/11/2026 505 S Arrowhead The resident called with a complaint of a sewer backup.

Upon inspection, the technician informed the resident
that the plumber needs to snake the lateral all the way to the main line. The resident called back to report their lateral was cleared.

BVO
3/18/2026 1410 Foothill Ave A call reporting a sewer odor in front of Food 4 Less.

There are no sewer mains near Food 4 Less, the main line on Cedar Ave and Foothill Ave checked as a courtesy—no
smell detected.

70 Table 1 Summary

71 72

73 Table 2 Summary

74 75

Table 3 Summary

76 77

Monthly Sewer Line Cleaned

Water SubcommitteeMay 28, 2026

Water Subcommittee
May 28, 2026