DUNCANS MILLS, CA · Sonoma County
AUSTIN ACRES MUTUAL WATER COMPANY Water System
Consumer Confidence Report status
AUSTIN ACRES MUTUAL WATER COMPANY 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 AUSTIN ACRES MUTUAL WATER COMPANY.
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)
- CA4900620
- System type
- Community Water System
- Population served
- 82
- Service connections
- 24
- Ownership
- privately owned
- Water source
- groundwater (wells)
AUSTIN ACRES MUTUAL WATER COMPANY is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 82 people from groundwater.
As of August 1, 2026, its federal record holds 6 entries between 1981 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.
Of the 6, 3 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 the Miscellaneous Other Rules, the Total Coliform Rules, and inorganic chemicals.
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
October 1, 2021 – December 31, 2021
ResolvedMonitoring, Regular
—Nitrate
January 1, 2020 – December 31, 2020
ResolvedNotification, Public
—No contaminant on record
September 1, 1984 – September 30, 1984
ArchivedNotification, Public
—No contaminant on record
July 1, 1984 – July 31, 1984
ArchivedNotification, Public
—No contaminant on record
January 1, 1983 – January 31, 1983
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
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 |
|---|---|---|---|---|
| October 1, 2021 – December 31, 2021 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| January 1, 2020 – December 31, 2020 | Monitoring, Regular | Nitrate | — | Resolved |
| September 1, 1984 – September 30, 1984 | Notification, Public | — | — | Archived |
| July 1, 1984 – July 31, 1984 | Notification, Public | — | — | Archived |
| January 1, 1983 – January 31, 1983 | Notification, Public | — | — | Archived |
| October 1, 1981 – September 30, 1982 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- December 30, 1999State Compliance achieved18 linked violations
Common questions
Is AUSTIN ACRES MUTUAL WATER COMPANY required to publish a Consumer Confidence Report?
- Yes. AUSTIN ACRES MUTUAL WATER COMPANY 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 AUSTIN ACRES MUTUAL WATER COMPANY’s next Consumer Confidence Report due?
- AUSTIN ACRES MUTUAL WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does AUSTIN ACRES MUTUAL WATER COMPANY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for AUSTIN ACRES MUTUAL WATER COMPANY.
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
EDMONDS, SALLY
707-326-7686
DUNCANS MILLS, CA 95430