Public Water Partners

MT. SHASTA, CA · Siskiyou County

SISKIYOU LAKE HIGHLANDS MWC Water System

Consumer Confidence Report status

SISKIYOU LAKE HIGHLANDS MWC 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 SISKIYOU LAKE HIGHLANDS MWC.

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)
CA4700880
System type
Community Water System
Population served
549
Service connections
94
Ownership
privately owned
Water source
groundwater (wells)

SISKIYOU LAKE HIGHLANDS MWC is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 549 people from groundwater.

As of August 1, 2026, its federal record holds 1 entry in 2023, all of which EPA lists as closed. Nothing has been added since 2023.

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

  • Treatment Technique, Level 2 Assessment (RTCR)

    Health-based

    Revised Total Coliform Rule

    January 1, 2023 – January 19, 2023

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is SISKIYOU LAKE HIGHLANDS MWC required to publish a Consumer Confidence Report?

Yes. SISKIYOU LAKE HIGHLANDS MWC 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 SISKIYOU LAKE HIGHLANDS MWC’s next Consumer Confidence Report due?

SISKIYOU LAKE HIGHLANDS MWC’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does SISKIYOU LAKE HIGHLANDS MWC have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for SISKIYOU LAKE HIGHLANDS MWC.

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

FRYER, JOHN

530-925-1357

MT. SHASTA, CA 96067