Is SOUTH MOUNTAIN MUTUAL WATER CO required to publish a Consumer Confidence Report?

Yes. SOUTH 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 SOUTH MOUNTAIN MUTUAL WATER CO’s next Consumer Confidence Report due?

SOUTH MOUNTAIN MUTUAL WATER CO’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

SANTA PAULA, CA · Ventura County

SOUTH MOUNTAIN MUTUAL WATER CO Water System

Consumer Confidence Report status

SOUTH 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 SOUTH 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): CA5601141
System type: Community Water System
Population served: 58
Service connections: 27
Ownership: privately owned
Water source: groundwater (wells)

SOUTH MOUNTAIN MUTUAL WATER CO is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 58 people from groundwater.

As of August 1, 2026, its federal record holds 5 entries between 1997 and 2016, all of which EPA lists as closed. Nothing has been added since 2016.

All 5 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, the Groundwater Rule, and the Lead and Copper Rule.

Violation history

Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
March 1, 2016 – March 31, 2016
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
March 1, 2016 – May 16, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2010 – August 31, 2010
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
January 1, 2007 – January 31, 2007
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 1997 – August 31, 2001
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
March 1, 2016 – March 31, 2016	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2016 – May 16, 2016	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
August 1, 2010 – August 31, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2007 – January 31, 2007	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1997 – August 31, 2001	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

April 30, 2016State Compliance achieved1 linked violation
October 30, 2013State Compliance achieved1 linked violation
September 30, 2010State Compliance achieved2 linked violations
September 29, 2010State Administrative/Compliance Order without penalty issued2 linked violations
July 7, 2009State Administrative/Compliance Order without penalty issued2 linked violations
June 2, 2008State Administrative/Compliance Order without penalty issued2 linked violations
April 30, 2008State Compliance achieved2 linked violations
January 1, 2002State Compliance achieved5 linked violations
August 31, 2001State Compliance achieved1 linked violation
March 13, 2001State Administrative/Compliance Order without penalty issued6 linked violations
December 30, 1999State Compliance achieved3 linked violations

Common questions

Is SOUTH MOUNTAIN MUTUAL WATER CO required to publish a Consumer Confidence Report?: Yes. SOUTH 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 SOUTH MOUNTAIN MUTUAL WATER CO’s next Consumer Confidence Report due?: SOUTH MOUNTAIN MUTUAL WATER CO’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does SOUTH 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 SOUTH 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

SCHIEFERLE, JANICE

805-525-9946

SANTA PAULA, CA 93061