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

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

MINERAL MOUNTAIN MUTUAL WATER’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.

MUPHYS, CA · Calaveras County

MINERAL MOUNTAIN MUTUAL WATER Water System

Consumer Confidence Report status

MINERAL MOUNTAIN MUTUAL WATER 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 MINERAL MOUNTAIN MUTUAL WATER.

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): CA0500019
System type: Community Water System
Population served: 67
Service connections: 34
Ownership: privately owned
Water source: groundwater (wells)

MINERAL MOUNTAIN MUTUAL WATER is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 67 people from groundwater.

As of August 1, 2026, its federal record holds 1 entry in 2007, all of which EPA lists as closed. Nothing has been added since 2007.

None of the 1 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Total Coliform Rules.

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2007 – July 31, 2007
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2007 – July 31, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

July 30, 2010State Compliance achieved5 linked violations
September 13, 2007State Compliance achieved2 linked violations
September 13, 2007State Formal Notice of Violation issued2 linked violations
September 13, 2007State Formal Notice of Violation issued2 linked violations
September 20, 2006State Public Notification issued1 linked violation
September 20, 2006State Formal Notice of Violation issued1 linked violation
September 11, 2006State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
February 15, 2005State Compliance achieved2 linked violations
February 15, 2005State Public Notification issued3 linked violations
February 15, 2005State Public Notification issued3 linked violations
February 15, 2005State Formal Notice of Violation issued1 linked violation
February 15, 2005State Compliance achieved1 linked violation
February 15, 2005State Public Notification issued1 linked violation
February 14, 2005State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
February 14, 2005State Public Notification issued1 linked violation
February 14, 2005State Formal Notice of Violation issued1 linked violation
February 14, 2005State Compliance achieved2 linked violations
February 14, 2005State Formal Notice of Violation issued1 linked violation
September 14, 2004State Compliance achieved2 linked violations
September 14, 2004State Formal Notice of Violation issued2 linked violations
August 24, 2004State Compliance achieved2 linked violations
August 24, 2004State Formal Notice of Violation issued2 linked violations
May 19, 2004State Public Notification issued2 linked violations
May 19, 2004State Compliance achieved1 linked violation
May 19, 2004State Public Notification issued2 linked violations
February 22, 2002State Public Notification issued1 linked violation
February 22, 2002State Public Notification issued1 linked violation
February 22, 2002State Public Notification issued1 linked violation

Common questions

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

SAUL, RHONDA

209-728-9029

MUPHYS, CA 95247