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OAKLEY MUTUAL WATER COMPANY

California - Community Water System - PWSID: CA0706004

System Information

PWSIDCA0706004
System NameOAKLEY MUTUAL WATER COMPANY
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedJun 22, 2026

Location & Contact

StateCalifornia
CityOAKLEY
ZIP Code94561
Address4508 SANDMOUND BLVD
OrganizationCOUNCIL, DANA
Phone925-684-3940

Population & Service

Population Served170
Service Connections50

Drinking Water Violations (24)

This water system has 24 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
Jan 1, 2026 Mar 31, 2026 MCL Yes No .013 MG/L 0.010 mg/L .01 Archived Mar 31, 2026 -
Oct 1, 2025 Dec 31, 2025 MCL Yes No .013 MG/L 0.010 mg/L .01 Archived Dec 31, 2025 -
Jul 1, 2025 Sep 30, 2025 MCL Yes No .014 MG/L 0.010 mg/L .01 Archived Sep 30, 2025 -
Apr 1, 2025 Jun 30, 2025 MCL Yes No .013 MG/L 0.010 mg/L .01 Archived Jun 30, 2025 -
Jan 1, 2025 Mar 31, 2025 MCL Yes No .013 MG/L 0.010 mg/L .01 Archived Mar 31, 2025 -
Oct 17, 2024 - RPT No No - - - Unaddressed - -
Oct 17, 2024 - TT Yes No - - - Unaddressed - -
Oct 1, 2024 Dec 31, 2024 MCL Yes No .013 MG/L 0.010 mg/L .01 Archived Dec 31, 2024 -
Jul 1, 2024 Sep 30, 2024 MCL Yes No .013 MG/L 0.010 mg/L .01 Archived Sep 30, 2024 -
Apr 1, 2024 Jun 30, 2024 MCL Yes No .012 MG/L 0.010 mg/L .01 Archived Jun 30, 2024 -
Jan 1, 2024 Mar 31, 2024 MCL Yes No .013 MG/L 0.010 mg/L .01 Archived Mar 31, 2024 -
Oct 1, 2023 Dec 31, 2023 MCL Yes No .012 MG/L 0.010 mg/L .01 Archived Dec 31, 2023 -
Jul 1, 2023 Sep 30, 2023 MCL Yes No .012 MG/L 0.010 mg/L .01 Archived Sep 30, 2023 -
Apr 1, 2023 Jun 30, 2023 MCL Yes No .013 MG/L 0.010 mg/L .01 Archived Jun 30, 2023 -
Jan 1, 2023 Mar 31, 2023 MCL Yes No .013 MG/L 0.010 mg/L .01 Archived Mar 31, 2023 -
Oct 1, 2022 Dec 31, 2022 MCL Yes No .014 MG/L 0.010 mg/L .01 Archived Dec 31, 2022 -
Jul 1, 2022 Sep 30, 2022 MCL Yes No .012 MG/L 0.010 mg/L .01 Archived Sep 30, 2022 -
Apr 1, 2022 Jun 30, 2022 MCL Yes No .012 MG/L 0.010 mg/L .01 Archived Jun 30, 2022 -
Jan 1, 2022 Mar 31, 2022 MCL Yes No .014 MG/L 0.010 mg/L .01 Archived Mar 31, 2022 -
Oct 1, 2021 Dec 31, 2021 MCL Yes No .015 MG/L 0.010 mg/L .01 Archived Dec 31, 2021 -
Feb 7, 2013 Mar 31, 2013 MR No No - 1 mg/L - Resolved Mar 31, 2013 -
Feb 7, 2013 Mar 31, 2013 MR No No - 1 mg/L - Resolved Mar 31, 2013 -
Oct 1, 2008 Oct 31, 2008 MR No No - 5% of samples - Resolved Oct 31, 2008 -
Oct 1, 2008 Oct 31, 2008 MR No No - 5% of samples - Resolved Oct 31, 2008 -

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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