Is WEST VALLEY WATER DISTRICT required to publish a Consumer Confidence Report?

Yes. WEST VALLEY WATER DISTRICT is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is WEST VALLEY WATER DISTRICT’s next Consumer Confidence Report due?

WEST VALLEY WATER DISTRICT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

RIALTO, CA · San Bernardino County

WEST VALLEY WATER DISTRICT Water System

Consumer Confidence Report status

WEST VALLEY WATER DISTRICT must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for WEST VALLEY WATER DISTRICT.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.

System facts

System ID (PWSID): CA3610004
System type: Community Water System
Population served: 104,498
Service connections: 23,436
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

WEST VALLEY WATER DISTRICT is one of 92 community water systems in California in the more than 100,000 people size category, serving 104,498 people from surface water.

As of August 1, 2026, its federal record holds 6 entries between 1987 and 2013, all of which EPA lists as closed. Nothing has been added since 2013.

Of the 6, 2 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals.

Violation history

Monitoring, Regular
—
Nitrate
January 1, 2013 – December 31, 2013
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2012 – December 31, 2012
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
June 1, 1987 – June 30, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
May 1, 1987 – May 31, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
April 1, 1987 – April 30, 1987
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
March 1, 1987 – March 31, 1987
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2013 – December 31, 2013	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Nitrate	—	Resolved
June 1, 1987 – June 30, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
May 1, 1987 – May 31, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
April 1, 1987 – April 30, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
March 1, 1987 – March 31, 1987	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

January 29, 2014State Formal Notice of Violation issued4 linked violations
December 4, 2012State Violation/Reminder Notice1 linked violation

Common questions

Is WEST VALLEY WATER DISTRICT required to publish a Consumer Confidence Report?: Yes. WEST VALLEY WATER DISTRICT is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is WEST VALLEY WATER DISTRICT’s next Consumer Confidence Report due?: WEST VALLEY WATER DISTRICT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WEST VALLEY WATER DISTRICT have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for WEST VALLEY WATER DISTRICT.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

THIEL, JOHN

909-875-3706

RIALTO, CA 92377