Public Water Partners

TRINIDAD, CA · Humboldt County

MOONSTONE HEIGHTS MWA Water System

Consumer Confidence Report status

MOONSTONE HEIGHTS MWA 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 MOONSTONE HEIGHTS MWA.

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)
CA1200590
System type
Community Water System
Population served
33
Service connections
16
Ownership
privately owned
Water source
groundwater (wells)

MOONSTONE HEIGHTS MWA is one of 3,951 community water systems in California in the 500 or fewer people size category, serving 33 people from groundwater.

As of August 1, 2026, its federal record holds 7 entries between 1980 and 2014, all of which EPA lists as closed. Nothing has been added since 2014.

Of the 7, 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 the Miscellaneous Other Rules, the Radionuclides and Revised Rad Rule, and the Total Coliform Rules.

Violation history

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    March 1, 2014 – March 31, 2014

    Resolved

  • Notification, Public

    —

    No contaminant on record

    July 1, 1983 – July 31, 1983

    Archived

  • Notification, Public

    —

    No contaminant on record

    May 1, 1983 – May 31, 1983

    Archived

  • Notification, Public

    —

    No contaminant on record

    March 1, 1983 – March 31, 1983

    Archived

  • Notification, Public

    —

    No contaminant on record

    October 1, 1982 – October 31, 1982

    Archived

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    October 1, 1981 – September 30, 1982

    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)

Enforcement actions

Common questions

Is MOONSTONE HEIGHTS MWA required to publish a Consumer Confidence Report?

Yes. MOONSTONE HEIGHTS MWA 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 MOONSTONE HEIGHTS MWA’s next Consumer Confidence Report due?

MOONSTONE HEIGHTS MWA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does MOONSTONE HEIGHTS MWA have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for MOONSTONE HEIGHTS MWA.

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

PROVOLT, SHERRI

707-599-1179

TRINIDAD, CA 95570