LAKE DON PEDRO CSD

California — Community Water System — PWSID: CA5510008

System Information

PWSIDCA5510008
System NameLAKE DON PEDRO CSD
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CityLA GRANGE
ZIP Code95329
Address9751 Merced Falls Road
OrganizationSAVIDGE, DAVE
Phone209-852-2331

Population & Service

Population Served3,240
Service Connections1,534

Drinking Water Violations (56)

This water system has 56 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
Apr 1, 2025 May 31, 2025 Revised Total Coliform Rule MON No No Resolved May 31, 2025 Revised Total Coliform Rule
Apr 1, 2025 May 31, 2025 Revised Total Coliform Rule MON No No Resolved May 31, 2025 Revised Total Coliform Rule
Oct 17, 2024 LEAD AND COPPER RULE REVISIONS RPT No No Unaddressed Lead and Copper Rule Revisions
Oct 17, 2024 LEAD AND COPPER RULE REVISIONS TT Yes No Unaddressed Lead and Copper Rule Revisions
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes 10 mg/L Resolved Dec 31, 2024 Nitrate Rule
Oct 1, 2017 Lead and Copper Rule MR No No TT Resolved Nov 2, 2018 Lead and Copper Rule
Oct 1, 2017 Lead and Copper Rule MR No No TT Resolved Nov 2, 2018 Lead and Copper Rule
Apr 1, 2009 Jun 30, 2009 TTHM MCL Yes No .0862 MG/L 0.080 mg/L .08 Resolved Jun 30, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2009 Jun 30, 2009 TTHM MCL Yes No .0862 MG/L 0.080 mg/L .08 Resolved Jun 30, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2008 Dec 31, 2008 TTHM MCL Yes No .0836 MG/L 0.080 mg/L .08 Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2008 Dec 31, 2008 TTHM MCL Yes No .0836 MG/L 0.080 mg/L .08 Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 Sep 30, 2007 Total Haloacetic Acids (HAA5) MCL Yes No .0618 MG/L 0.060 mg/L .06 Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 Sep 30, 2007 TTHM MCL Yes No .0955 MG/L 0.080 mg/L .08 Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 Sep 30, 2007 TTHM MCL Yes No .0955 MG/L 0.080 mg/L .08 Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 Sep 30, 2007 TTHM MCL Yes No .0955 MG/L 0.080 mg/L .08 Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 Sep 30, 2007 Total Haloacetic Acids (HAA5) MCL Yes No .0618 MG/L 0.060 mg/L .06 Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 Sep 30, 2007 Total Haloacetic Acids (HAA5) MCL Yes No .0618 MG/L 0.060 mg/L .06 Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2007 Jun 30, 2007 TTHM MCL Yes No .1285 MG/L 0.080 mg/L .08 Resolved Jun 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2007 Jun 30, 2007 TTHM MCL Yes No .1285 MG/L 0.080 mg/L .08 Resolved Jun 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2007 Jun 30, 2007 Total Haloacetic Acids (HAA5) MCL Yes No .089 MG/L 0.060 mg/L .06 Resolved Jun 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2007 Jun 30, 2007 Total Haloacetic Acids (HAA5) MCL Yes No .089 MG/L 0.060 mg/L .06 Resolved Jun 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2007 Jun 30, 2007 Total Haloacetic Acids (HAA5) MCL Yes No .089 MG/L 0.060 mg/L .06 Resolved Jun 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2007 Jun 30, 2007 TTHM MCL Yes No .1285 MG/L 0.080 mg/L .08 Resolved Jun 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 TTHM MCL Yes No .1418 MG/L 0.080 mg/L .08 Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 TTHM MCL Yes No .1418 MG/L 0.080 mg/L .08 Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 TTHM MCL Yes No .1418 MG/L 0.080 mg/L .08 Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 Total Haloacetic Acids (HAA5) MCL Yes No .0961 MG/L 0.060 mg/L .06 Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 Total Haloacetic Acids (HAA5) MCL Yes No .0961 MG/L 0.060 mg/L .06 Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 Total Haloacetic Acids (HAA5) MCL Yes No .0961 MG/L 0.060 mg/L .06 Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 Total Haloacetic Acids (HAA5) MCL Yes No .1024 MG/L 0.060 mg/L .06 Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 Total Haloacetic Acids (HAA5) MCL Yes No .1024 MG/L 0.060 mg/L .06 Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 Total Haloacetic Acids (HAA5) MCL Yes No .1024 MG/L 0.060 mg/L .06 Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 TTHM MCL Yes No .1513 MG/L 0.080 mg/L .08 Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 TTHM MCL Yes No .1513 MG/L 0.080 mg/L .08 Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 TTHM MCL Yes No .1513 MG/L 0.080 mg/L .08 Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2006 Sep 30, 2006 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2006 Sep 30, 2006 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2006 Sep 30, 2006 TTHM MR No Yes 0.080 mg/L Resolved Sep 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2006 Sep 30, 2006 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Sep 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2006 Jun 30, 2006 TTHM MR No Yes 0.080 mg/L Resolved Jun 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2006 Jun 30, 2006 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Jun 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2006 Jun 30, 2006 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Jun 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2006 Jun 30, 2006 TTHM MR No Yes 0.080 mg/L Resolved Jun 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2006 Mar 31, 2006 TTHM MR No Yes 0.080 mg/L Resolved Mar 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2006 Mar 31, 2006 Total Haloacetic Acids (HAA5) MR No Yes 0.060 mg/L Resolved Mar 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2006 Mar 31, 2006 TTHM MCL Yes No .1377 MG/L 0.080 mg/L .08 Resolved Mar 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2006 Mar 31, 2006 TTHM MR No Yes 0.080 mg/L Resolved Mar 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2006 Mar 31, 2006 Total Haloacetic Acids (HAA5) MCL Yes No .0804 MG/L 0.060 mg/L .06 Resolved Mar 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2006 Mar 31, 2006 Total Haloacetic Acids (HAA5) MCL Yes No .0804 MG/L 0.060 mg/L .06 Resolved Mar 31, 2006 Stage 1 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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