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Santa Rosa Rancheria

California — Community Water System — PWSID: 090600148

System Information

PWSID090600148
System NameSanta Rosa Rancheria
System TypeCommunity Water System
Water SourceGround Water Purchased
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedFeb 2, 1984
Last ReportedDec 31, 2025

Location & Contact

StateCalifornia
CityLemoore
ZIP Code93245
AddressP. O. Box 8
OrganizationSanta Rosa Rancheria
Phone5599241278

Population & Service

Population Served1,000
Service Connections251

Drinking Water Violations (306)

This water system has 306 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
Jul 1, 2025 Sep 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 18, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2025 Apr 30, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2025 Revised Total Coliform Rule
Apr 1, 2025 Apr 30, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2025 Revised Total Coliform Rule
Apr 1, 2025 Jun 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2025 Apr 30, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2025 Revised Total Coliform Rule
Apr 1, 2025 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Mar 1, 2025 Mar 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Mar 31, 2025 Revised Total Coliform Rule
Mar 1, 2025 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Mar 1, 2025 Mar 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Mar 31, 2025 Revised Total Coliform Rule
Mar 1, 2025 Mar 31, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Mar 31, 2025 Revised Total Coliform Rule
Feb 1, 2025 Feb 28, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2025 Revised Total Coliform Rule
Feb 1, 2025 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Jan 1, 2025 Mar 31, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2024 Nov 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Nov 30, 2024 Revised Total Coliform Rule
Oct 1, 2024 Dec 31, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 Oct 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2024 Revised Total Coliform Rule
Oct 1, 2024 Oct 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2024 Revised Total Coliform Rule
Oct 1, 2024 Dec 31, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2024 — Public Notice Other No No — — — Resolved Aug 25, 2025 Public Notice Rule and Revised PN Rule
Sep 1, 2024 Sep 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2024 Revised Total Coliform Rule
Aug 1, 2024 — Public Notice Other No No — — — Resolved Aug 25, 2025 Public Notice Rule and Revised PN Rule
Aug 1, 2024 Aug 31, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Aug 31, 2024 Revised Total Coliform Rule
Jul 1, 2024 Sep 30, 2024 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2024 Jun 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2024 Revised Total Coliform Rule
Jun 1, 2024 — Public Notice Other No No — — — Resolved Aug 25, 2025 Public Notice Rule and Revised PN Rule
Apr 1, 2024 Apr 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Apr 30, 2024 Revised Total Coliform Rule
Apr 1, 2024 — Public Notice Other No No — — — Resolved Aug 25, 2025 Public Notice Rule and Revised PN Rule
Jan 1, 2024 Dec 31, 2024 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Dec 18, 2023 Consumer Confidence Rule
Jul 1, 2023 Sep 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 29, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2023 Jun 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved May 24, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Dec 31, 2021 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2021 Dec 31, 2021 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017 Dec 31, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017 Dec 31, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2015 Aug 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2015 Total Coliform Rule
Jan 1, 2014 Mar 31, 2014 TTHM MCL Yes No .1279 MG/L 0.080 mg/L — Resolved Mar 31, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2013 Nov 30, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2013 Total Coliform Rule
Jul 1, 2013 Sep 30, 2013 TTHM MCL Yes No .175 MG/L 0.080 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 TTHM MCL Yes No .175 MG/L 0.080 mg/L — Resolved Jun 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 TTHM MCL Yes No .175 MG/L 0.080 mg/L — Resolved Jun 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Mar 31, 2013 TTHM MCL Yes No .165 MG/L 0.080 mg/L — Resolved Mar 31, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Mar 31, 2013 TTHM MCL Yes No .165 MG/L 0.080 mg/L — Resolved Mar 31, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Dec 31, 2012 TTHM MCL Yes No .1775 MG/L 0.080 mg/L — Resolved Dec 31, 2012 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Dec 31, 2012 TTHM MCL Yes No .1775 MG/L 0.080 mg/L — Resolved Dec 31, 2012 Stage 2 Disinfectants and Disinfection Byproducts Rule

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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