Is MARIPOSA PUBLIC UTILITY DIST required to publish a Consumer Confidence Report?

Yes. MARIPOSA PUBLIC UTILITY DIST 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 MARIPOSA PUBLIC UTILITY DIST’s next Consumer Confidence Report due?

MARIPOSA PUBLIC UTILITY DIST’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.

MARIPOSA, CA · Mariposa County

MARIPOSA PUBLIC UTILITY DIST Water System

Consumer Confidence Report status

MARIPOSA PUBLIC UTILITY DIST 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 MARIPOSA PUBLIC UTILITY DIST.

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): CA2210001
System type: Community Water System
Population served: 2,000
Service connections: 684
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

MARIPOSA PUBLIC UTILITY DIST is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 2,000 people from surface water.

As of August 1, 2026, its federal record holds 11 entries between 1989 and 2013, all of which EPA lists as closed. Nothing has been added since 2013.

Of the 11, 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 Stage 1 Disinfectants and Disinfection Byproducts Rule, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Miscellaneous Other Rules.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2013 – March 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2012 – September 30, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2012 – June 30, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2012 – March 31, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2009 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2009 – March 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2008 – March 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2006 – June 30, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2005 – June 30, 2005
Resolved
Monitoring and Reporting (DBP)
—
CARBON, TOTAL
January 1, 2004 – March 31, 2004
Resolved
Notification, Public
—
No contaminant on record
March 1, 1989 – March 31, 1989
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
January 1, 2013 – March 31, 2013	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2012 – September 30, 2012	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2012 – March 31, 2012	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2006 – June 30, 2006	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2005 – June 30, 2005	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2004 – March 31, 2004	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
March 1, 1989 – March 31, 1989	Notification, Public	—	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

March 5, 2018State Compliance achieved34 linked violations
May 20, 2016Federal Compliance achieved98 linked violations
May 20, 2016Federal Compliance achieved36 linked violations
November 1, 2012State Administrative/Compliance Order without penalty issued8 linked violations
August 9, 2012State Administrative/Compliance Order without penalty issued3 linked violations
May 1, 2012State Administrative/Compliance Order without penalty issued55 linked violations
August 8, 2011State Compliance achieved2 linked violations
July 21, 2011State Administrative/Compliance Order without penalty issued2 linked violations
April 27, 2011State Administrative/Compliance Order without penalty issued2 linked violations
April 27, 2006Federal Final Administrative Order issued40 linked violations
February 1, 2005State Violation/Reminder Notice13 linked violations

Common questions

Is MARIPOSA PUBLIC UTILITY DIST required to publish a Consumer Confidence Report?: Yes. MARIPOSA PUBLIC UTILITY DIST 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 MARIPOSA PUBLIC UTILITY DIST’s next Consumer Confidence Report due?: MARIPOSA PUBLIC UTILITY DIST’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MARIPOSA PUBLIC UTILITY DIST have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for MARIPOSA PUBLIC UTILITY DIST.
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

WAGES, SUSAN

209-966-2515

MARIPOSA, CA 95338