ARROYO GRANDE, CA · San Luis Obispo County
CITY OF ARROYO GRANDE UTILITIES DIVISION Water System
Consumer Confidence Report status
CITY OF ARROYO GRANDE UTILITIES DIVISION 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 CITY OF ARROYO GRANDE UTILITIES DIVISION.
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)
- CA4010001
- System type
- Community Water System
- Population served
- 17,963
- Service connections
- 6,694
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
CITY OF ARROYO GRANDE UTILITIES DIVISION is one of 376 community water systems in California in the 10,001 to 100,000 people size category, serving 17,963 people from surface water.
As of August 1, 2026, its federal record holds 1 entry in 1996, all of which EPA lists as closed. Nothing has been added since 1996.
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 Former Total Trihalomethane Rule.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedTTHM
August 1, 1996 – August 31, 1996
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| August 1, 1996 – August 31, 1996 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- August 1, 2025State Administrative/Compliance Order without penalty issued10 linked violations
Common questions
Is CITY OF ARROYO GRANDE UTILITIES DIVISION required to publish a Consumer Confidence Report?
- Yes. CITY OF ARROYO GRANDE UTILITIES DIVISION 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 CITY OF ARROYO GRANDE UTILITIES DIVISION’s next Consumer Confidence Report due?
- CITY OF ARROYO GRANDE UTILITIES DIVISION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CITY OF ARROYO GRANDE UTILITIES DIVISION have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CITY OF ARROYO GRANDE UTILITIES DIVISION.
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
HIX, HAILIE
805-473-5464
ARROYO GRANDE, CA 93420