WILLITS, CA · Mendocino County
PINE MOUNTAIN MUTUAL WATER CO. Water System
Consumer Confidence Report status
PINE MOUNTAIN MUTUAL WATER CO. 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 PINE MOUNTAIN MUTUAL WATER CO..
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)
- CA2300591
- System type
- Community Water System
- Population served
- 310
- Service connections
- 125
- Ownership
- privately owned
- Water source
- surface water (rivers, lakes, or reservoirs)
PINE MOUNTAIN MUTUAL WATER CO. is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 310 people from surface water.
As of August 1, 2026, its federal record holds 4 entries between 1980 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.
All 4 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 Radionuclides and Revised Rad Rule, the Total Coliform Rules, and inorganic chemicals.
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
December 1, 2021 – December 31, 2021
ResolvedMonitoring, Regular
—Nitrite
January 1, 2018 – December 31, 2018
ResolvedMonitoring, 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
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 |
|---|---|---|---|---|
| December 1, 2021 – December 31, 2021 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| January 1, 2018 – December 31, 2018 | Monitoring, Regular | Nitrite | — | Resolved |
| 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 |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- April 17, 2019State Administrative/Compliance Order without penalty issued26 linked violations
Common questions
Is PINE MOUNTAIN MUTUAL WATER CO. required to publish a Consumer Confidence Report?
- Yes. PINE MOUNTAIN MUTUAL WATER CO. 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 PINE MOUNTAIN MUTUAL WATER CO.’s next Consumer Confidence Report due?
- PINE MOUNTAIN MUTUAL WATER CO.’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does PINE MOUNTAIN MUTUAL WATER CO. have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for PINE MOUNTAIN MUTUAL WATER CO..
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
WALZ, TOM
707-459-5980
WILLITS, CA 95490