U.S. GYPSUM CO

California - Non-Transient Non-Community - PWSID: CA1300517

System Information

PWSIDCA1300517
System NameU.S. GYPSUM CO
System TypeNon-Transient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedMar 20, 2026

Location & Contact

StateCalifornia
CityPLASTER CITY
ZIP Code92269
Address3810 W. Evan Hewes Hwy.
OrganizationMURPHY, DONALD R.
Phone760-455-8259

Population & Service

Population Served280
Service Connections1

Drinking Water Violations (22)

This water system has 22 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Oct 17, 2024 - RPT No No - - - Unaddressed - -
Oct 17, 2024 - TT Yes No - - - Unaddressed - -
Jan 1, 2022 Dec 31, 2022 MR No Yes - 10 mg/L - Resolved Dec 29, 2022 -
Jan 1, 2022 Dec 31, 2022 MR No Yes - 10 mg/L - Resolved Dec 29, 2022 -
Jan 1, 2022 Dec 31, 2022 MR No No - 0.060 mg/L - Resolved Dec 29, 2022 -
Jan 1, 2022 Dec 31, 2022 MR No No - 0.080 mg/L - Resolved Dec 29, 2022 -
Jan 1, 2022 Dec 31, 2022 MR No No - 0.080 mg/L - Resolved Dec 29, 2022 -
Jan 1, 2022 Dec 31, 2022 MR No No - 0.060 mg/L - Resolved Dec 29, 2022 -
Jan 31, 2011 Mar 31, 2011 MR No Yes - - - Resolved Mar 31, 2011 -
Aug 31, 2010 Mar 31, 2011 MR No No - 0.080 mg/L - Resolved Mar 31, 2011 -
Nov 1, 2000 Nov 30, 2000 MR No No - 5% of samples - Resolved Nov 30, 2000 -
Nov 1, 2000 Nov 30, 2000 MR No No - 5% of samples - Resolved Nov 30, 2000 -
Oct 1, 1998 Oct 31, 1998 MR No No - 5% of samples - Resolved Oct 31, 1998 -
Oct 1, 1998 Oct 31, 1998 MR No No - 5% of samples - Resolved Oct 31, 1998 -
Feb 1, 1998 Feb 28, 1998 MR No No - 5% of samples - Resolved Feb 28, 1998 -
Feb 1, 1998 Feb 28, 1998 MR No No - 5% of samples - Resolved Feb 28, 1998 -
Jul 1, 1993 - MR No No - TT - Resolved Sep 30, 2005 -
Sep 1, 1983 Sep 30, 1983 Other No No - - - Archived Sep 30, 1983 -
Oct 1, 1981 Sep 30, 1982 MR No Yes - 15 pCi/L - Archived Sep 30, 1982 -
Oct 30, 1980 Oct 29, 1981 MR No Yes - 15 pCi/L - Archived Oct 29, 1981 -
- - - No No - - - - - -
- - - No No - - - - - -

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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