PORTERVILLE, CA · Tulare County
SIERRA MUTUAL WATER COMPANY Water System
Consumer Confidence Report status
SIERRA 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 SIERRA 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)
- CA5403110
- System type
- Community Water System
- Population served
- 43
- Service connections
- 16
- Ownership
- privately owned
- Water source
- groundwater (wells)
SIERRA MUTUAL WATER COMPANY is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 43 people from groundwater.
As of August 1, 2026, its federal record holds 1 entry in 2006, all of which EPA lists as closed. Nothing has been added since 2006.
All 1 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 Total Coliform Rules.
Violation history
Monitoring, Repeat Major (TCR)
—Coliform (TCR)
May 1, 2006 – May 31, 2006
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| May 1, 2006 – May 31, 2006 | Monitoring, Repeat Major (TCR) | Coliform (TCR) | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- December 3, 2020State Compliance achieved2 linked violations
- November 20, 2020State Administrative/Compliance Order without penalty issued1 linked violation
- October 23, 2020State Administrative/Compliance Order with penalty issued1 linked violation
- September 4, 2020State Administrative/Compliance Order without penalty issued2 linked violations
- July 10, 2019State Compliance achieved4 linked violations
- June 26, 2019State Administrative/Compliance Order without penalty issued1 linked violation
- April 27, 2018State Administrative/Compliance Order without penalty issued1 linked violation
- August 25, 2017State Formal Notice of Violation issued1 linked violation
- April 24, 2017State Compliance achieved1 linked violation
- March 20, 2017State Administrative/Compliance Order with penalty issued17 linked violations
- May 27, 2016State Administrative/Compliance Order without penalty issued35 linked violations
- September 10, 2012State Compliance achieved1 linked violation
- July 10, 2012State Violation/Reminder Notice1 linked violation
- July 10, 2011State Violation/Reminder Notice1 linked violation
- December 10, 2010State Compliance achieved1 linked violation
- September 14, 2010State Administrative/Compliance Order without penalty issued13 linked violations
- November 10, 2008State Violation/Reminder Notice1 linked violation
- October 1, 2007State Administrative/Compliance Order without penalty issued3 linked violations
- September 10, 2007State Compliance achieved2 linked violations
- August 10, 2007State Violation/Reminder Notice1 linked violation
- July 10, 2007State Violation/Reminder Notice1 linked violation
- June 30, 2007State Compliance achieved1 linked violation
- June 10, 2007State Violation/Reminder Notice1 linked violation
- January 10, 2007State Formal Notice of Violation issued2 linked violations
- September 30, 2006State Compliance achieved1 linked violation
- September 10, 2006State Formal Notice of Violation issued1 linked violation
- July 10, 2006State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- June 30, 2006State Compliance achieved1 linked violation
- June 10, 2006State Formal Notice of Violation issued1 linked violation
- January 10, 2006State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
- January 10, 2006State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
- January 31, 2005State Compliance achieved1 linked violation
- January 10, 2005State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
- January 10, 2005State Public Notification issued3 linked violations
Common questions
Is SIERRA MUTUAL WATER COMPANY required to publish a Consumer Confidence Report?
- Yes. SIERRA 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 SIERRA MUTUAL WATER COMPANY’s next Consumer Confidence Report due?
- SIERRA MUTUAL WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does SIERRA 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 SIERRA 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
DRUM, EMILY
714-599-4149
PORTERVILLE, CA 93257