Public Water Partners

MARIPOSA, CA · Mariposa County

MARIPOSA PINES MUTUAL WATER CO Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of November 1, 1993. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Mariposa County, CA.

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)
CA2200014
System type
Community Water System
Population served
80
Service connections
40
Ownership
not on record
Water source
groundwater (wells)

MARIPOSA PINES MUTUAL WATER CO is one of 3,951 community water systems in California in the 500 or fewer people size category, formerly serving 80 people from groundwater.

EPA's federal records list this system as inactive in 1993; the record below is historical.

As of August 1, 2026, its federal record holds 2 entries between 1981 and 1984, all of which EPA lists as closed. Nothing has been added since 1984.

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

Violation history

  • Notification, Public

    —

    No contaminant on record

    August 1, 1984 – August 31, 1984

    Archived

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    October 1, 1981 – September 30, 1982

    Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

No enforcement actions on record for this system.

Last known contact on file (system is inactive)

Not on record

Phone not on record

MARIPOSA, CA 95338