MUIR BEACH, CA · Marin County
MUIR BEACH COMMUNITY Water System
Consumer Confidence Report status
MUIR BEACH COMMUNITY 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 MUIR BEACH COMMUNITY.
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)
- CA2100508
- System type
- Community Water System
- Population served
- 336
- Service connections
- 162
- Ownership
- local government
- Water source
- groundwater (wells)
MUIR BEACH COMMUNITY is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 336 people from groundwater.
As of August 1, 2026, its federal record holds 4 entries between 1980 and 1984, all of which EPA lists as closed. Nothing has been added since 1984.
Of the 4, 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 the Miscellaneous Other Rules and the Radionuclides and Revised Rad Rule.
Violation history
Notification, Public
—No contaminant on record
August 1, 1984 – August 31, 1984
ArchivedNotification, Public
—No contaminant on record
July 1, 1984 – July 31, 1984
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| August 1, 1984 – August 31, 1984 | Notification, Public | — | — | Archived |
| July 1, 1984 – July 31, 1984 | Notification, Public | — | — | Archived |
| October 1, 1981 – September 30, 1982 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| October 30, 1980 – October 29, 1981 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- January 5, 2005State Violation/Reminder Notice33 linked violations
Common questions
Is MUIR BEACH COMMUNITY required to publish a Consumer Confidence Report?
- Yes. MUIR BEACH COMMUNITY 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 MUIR BEACH COMMUNITY’s next Consumer Confidence Report due?
- MUIR BEACH COMMUNITY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MUIR BEACH COMMUNITY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MUIR BEACH COMMUNITY.
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
HALLEY, MARY
415-388-7804
MUIR BEACH, CA 94965