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HERITAGE RANCH CSD

California — Community Water System — PWSID: CA4010012

System Information

PWSIDCA4010012
System NameHERITAGE RANCH CSD
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CityPASO ROBLES
ZIP Code93446
Address4870 Heritage Road
OrganizationDUFFIELD, SCOTT
Phone805-227-6230

Population & Service

Population Served2,956
Service Connections1,963

Drinking Water Violations (38)

This water system has 38 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, 2024 Mar 31, 2024 Total Haloacetic Acids (HAA5) MCL Yes No .062 MG/L 0.060 mg/L .06 Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 Total Haloacetic Acids (HAA5) MCL Yes No .062 MG/L 0.060 mg/L .06 Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MCL Yes No .067 MG/L 0.060 mg/L .06 Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MCL Yes No .067 MG/L 0.060 mg/L .06 Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Total Haloacetic Acids (HAA5) MCL Yes No .076 MG/L 0.060 mg/L .06 Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Total Haloacetic Acids (HAA5) MCL Yes No .076 MG/L 0.060 mg/L .06 Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2023 Jun 30, 2023 Total Haloacetic Acids (HAA5) MCL Yes No .082 MG/L 0.060 mg/L .06 Resolved Jun 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2023 Jun 30, 2023 Total Haloacetic Acids (HAA5) MCL Yes No .082 MG/L 0.060 mg/L .06 Resolved Jun 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Mar 31, 2023 Total Haloacetic Acids (HAA5) MCL Yes No .097 MG/L 0.060 mg/L .06 Resolved Mar 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Mar 31, 2023 Total Haloacetic Acids (HAA5) MCL Yes No .097 MG/L 0.060 mg/L .06 Resolved Mar 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Mar 31, 2023 TTHM MCL Yes No .082 MG/L 0.080 mg/L .08 Resolved Mar 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Mar 31, 2023 TTHM MCL Yes No .082 MG/L 0.080 mg/L .08 Resolved Mar 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 TTHM MCL Yes No .086 MG/L 0.080 mg/L .08 Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 TTHM MCL Yes No .086 MG/L 0.080 mg/L .08 Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Total Haloacetic Acids (HAA5) MCL Yes No .113 MG/L 0.060 mg/L .06 Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Total Haloacetic Acids (HAA5) MCL Yes No .113 MG/L 0.060 mg/L .06 Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 Total Haloacetic Acids (HAA5) MCL Yes No .093 MG/L 0.060 mg/L .06 Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 Total Haloacetic Acids (HAA5) MCL Yes No .093 MG/L 0.060 mg/L .06 Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Total Haloacetic Acids (HAA5) MCL Yes No .083 MG/L 0.060 mg/L .06 Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Total Haloacetic Acids (HAA5) MCL Yes No .083 MG/L 0.060 mg/L .06 Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Dec 31, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .074 MG/L 0.060 mg/L .06 Resolved Dec 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2020 Dec 31, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .074 MG/L 0.060 mg/L .06 Resolved Dec 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2020 Sep 30, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .079 MG/L 0.060 mg/L .06 Resolved Sep 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2020 Sep 30, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .079 MG/L 0.060 mg/L .06 Resolved Sep 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2020 Jun 30, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .078 MG/L 0.060 mg/L .06 Resolved Jun 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2020 Jun 30, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .078 MG/L 0.060 mg/L .06 Resolved Jun 30, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 Mar 31, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .0701 MG/L 0.060 mg/L .06 Resolved Mar 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 Mar 31, 2020 Total Haloacetic Acids (HAA5) MCL Yes No .0701 MG/L 0.060 mg/L .06 Resolved Mar 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2019 Dec 31, 2019 Total Haloacetic Acids (HAA5) MCL Yes No .067 MG/L 0.060 mg/L .06 Resolved Dec 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2019 Dec 31, 2019 Total Haloacetic Acids (HAA5) MCL Yes No .067 MG/L 0.060 mg/L .06 Resolved Dec 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Jan 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jan 31, 2012 Total Coliform Rule
Jan 1, 2012 Jan 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jan 31, 2012 Total Coliform Rule
Oct 1, 2010 Dec 31, 2010 Total Haloacetic Acids (HAA5) MCL Yes No .062 MG/L 0.060 mg/L .06 Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2010 Dec 31, 2010 Total Haloacetic Acids (HAA5) MCL Yes No .062 MG/L 0.060 mg/L .06 Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 1995 Apr 30, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1995 Total Coliform Rule
Apr 1, 1995 Apr 30, 1995 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 1995 Total Coliform Rule
Jul 1, 1993 Jul 31, 1993 Surface Water Treatment Rule TT Yes No — — — Resolved May 29, 1991 Surface Water Treatment Rule
Jul 1, 1993 Jul 31, 1993 Surface Water Treatment Rule TT Yes No — — — Resolved May 29, 1991 Surface Water Treatment 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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