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

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

KERNVALE 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.

LAKE ISABELLA, CA · Kern County

KERNVALE MUTUAL WATER CO Water System

Consumer Confidence Report status

KERNVALE 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 KERNVALE 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): CA1500364
System type: Community Water System
Population served: 75
Service connections: 32
Ownership: privately owned
Water source: groundwater (wells)

KERNVALE MUTUAL WATER CO is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 75 people from groundwater.

As of August 1, 2026, its federal record holds 11 entries between 2002 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.

Of the 11, 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 inorganic chemicals, the Consumer Confidence Rule, and the Total Coliform Rules.

Violation history

Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2021 – December 31, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2013 – March 1, 2018
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2011 – June 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2011 – March 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2010 – March 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2009 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2008 – December 31, 2008
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2007 – June 10, 2008
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2005 – March 31, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2002 – July 31, 2002
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2021 – December 31, 2021	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2013 – March 1, 2018	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2011 – June 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2010 – March 31, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2007 – June 10, 2008	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
March 1, 2005 – March 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2002 – July 31, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

August 26, 2025State Compliance achieved3 linked violations
November 30, 2013State Compliance achieved4 linked violations
January 23, 2009State Administrative/Compliance Order without penalty issued24 linked violations
June 30, 2004State Compliance achieved54 linked violations
August 20, 2002State Violation/Reminder Notice20 linked violations
July 30, 1998State Compliance achieved5 linked violations

Common questions

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

VAN DYKE, STEVE

760-223-0836

LAKE ISABELLA, CA 93240