RANCHO CUCUAMONGA, CA · San Bernardino County
CUCAMONGA VALLEY WATER DISTRICT Water System
Consumer Confidence Report status
CUCAMONGA 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 CUCAMONGA 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)
- CA3610018
- System type
- Community Water System
- Population served
- 211,069
- Service connections
- 48,443
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
CUCAMONGA VALLEY WATER DISTRICT is one of 92 community water systems in California in the more than 100,000 people size category, serving 211,069 people from surface water.
As of August 1, 2026, its federal record holds 1 entry in 1987, all of which EPA lists as closed. Nothing has been added since 1987.
None of the 1 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Miscellaneous Other Rules.
Violation history
Notification, Public
—No contaminant on record
April 1, 1987 – April 30, 1987
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 1987 – April 30, 1987 | Notification, Public | — | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is CUCAMONGA VALLEY WATER DISTRICT required to publish a Consumer Confidence Report?
- Yes. CUCAMONGA 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 CUCAMONGA VALLEY WATER DISTRICT’s next Consumer Confidence Report due?
- CUCAMONGA VALLEY WATER DISTRICT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CUCAMONGA 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 CUCAMONGA 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
VARIAN, CARMEN
909-987-2591
RANCHO CUCUAMONGA, CA 91730