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

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

LAGUNA 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.

MT LAGUNA, CA · San Diego County

LAGUNA MOUNTAIN MUTUAL WATER CO. Water System

Consumer Confidence Report status

LAGUNA 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 LAGUNA 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): CA3700422
System type: Community Water System
Population served: 100
Service connections: 30
Ownership: privately owned
Water source: groundwater (wells)

LAGUNA MOUNTAIN MUTUAL WATER CO. is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 100 people from groundwater.

As of August 1, 2026, its federal record holds 6 entries between 1980 and 2007, all of which EPA lists as closed. Nothing has been added since 2007.

Of the 6, 2 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 Miscellaneous Other Rules, the Total Coliform Rules, and the Radionuclides and Revised Rad Rule.

Violation history

Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2007 – December 31, 2007
Resolved
Notification, Public
—
No contaminant on record
August 1, 1984 – August 31, 1984
Archived
Notification, Public
—
No contaminant on record
September 1, 1983 – September 30, 1983
Archived
Notification, Public
—
No contaminant on record
August 1, 1983 – August 31, 1983
Archived
Notification, Public
—
No contaminant on record
July 1, 1983 – July 31, 1983
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
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
December 1, 2007 – December 31, 2007	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 1984 – August 31, 1984	Notification, Public	—	—	Archived
September 1, 1983 – September 30, 1983	Notification, Public	—	—	Archived
August 1, 1983 – August 31, 1983	Notification, Public	—	—	Archived
July 1, 1983 – July 31, 1983	Notification, Public	—	—	Archived
October 30, 1980 – October 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

July 9, 2008State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
January 11, 2008State Administrative/Compliance Order without penalty issued1 linked violation
October 13, 2004Federal Compliance achieved1 linked violation

Common questions

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

RICE, MIKE

619-985-3462

MT LAGUNA, CA 91948