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LITTLE POTATO SLOUGH MUTUAL

California — Community Water System — PWSID: CA3910022

System Information

PWSIDCA3910022
System NameLITTLE POTATO SLOUGH MUTUAL
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedFeb 25, 1988
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CityLODI
ZIP Code95242
Address14900 W HWY 12
OrganizationARNERICH, DENYSE
Phone209-339-1602

Population & Service

Population Served1,510
Service Connections202

Drinking Water Violations (28)

This water system has 28 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 1, 2021 Dec 31, 2021 TTHM MCL Yes No .081 MG/L 0.080 mg/L .08 Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2021 Dec 31, 2021 TTHM MCL Yes No .081 MG/L 0.080 mg/L .08 Resolved Dec 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2019 Sep 30, 2019 Total Haloacetic Acids (HAA5) MCL Yes No .068 MG/L 0.060 mg/L .06 Resolved Sep 30, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2019 Sep 30, 2019 Total Haloacetic Acids (HAA5) MCL Yes No .068 MG/L 0.060 mg/L .06 Resolved Sep 30, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2019 Jun 30, 2019 Total Haloacetic Acids (HAA5) MCL Yes No .071 MG/L 0.060 mg/L .06 Resolved Jun 30, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2019 Jun 30, 2019 Total Haloacetic Acids (HAA5) MCL Yes No .071 MG/L 0.060 mg/L .06 Resolved Jun 30, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019 Mar 31, 2019 Total Haloacetic Acids (HAA5) MCL Yes No .069 MG/L 0.060 mg/L .06 Resolved Mar 31, 2019 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2016 Jun 30, 2016 Total Haloacetic Acids (HAA5) MCL Yes No .065 MG/L 0.060 mg/L .06 Resolved Jun 30, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2016 Jun 30, 2016 Total Haloacetic Acids (HAA5) MCL Yes No .065 MG/L 0.060 mg/L .06 Resolved Jun 30, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2004 Dec 31, 2004 Other No No — — — Resolved Dec 31, 2004 Miscellaneous Other Rules
Nov 1, 2004 Dec 31, 2004 Other No No — — — Resolved Dec 31, 2004 Miscellaneous Other Rules
Oct 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Feb 11, 2005 Lead and Copper Rule
Oct 1, 2004 — Lead and Copper Rule MR No No — TT — Resolved Feb 11, 2005 Lead and Copper Rule
Aug 1, 2003 Aug 31, 2003 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 28, 2003 Total Coliform Rule
Mar 1, 2001 Mar 31, 2001 Surface Water Treatment Rule MR No No — — — Resolved Mar 31, 2001 Surface Water Treatment Rule
Mar 1, 2001 Mar 31, 2001 Surface Water Treatment Rule MR No No — — — Resolved Mar 31, 2001 Surface Water Treatment Rule
Dec 1, 1999 Dec 31, 1999 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 1999 Total Coliform Rule
Jun 1, 1989 Jun 30, 1989 Fluoride MR No Yes — 4.0 mg/L — Archived Jun 30, 1989 Inorganic Chemicals
Jun 1, 1989 Jun 30, 1989 Arsenic MR No Yes — 0.010 mg/L — Archived Jun 30, 1989 Arsenic Rule
Jun 1, 1989 Jun 30, 1989 Other No No — — — Archived Jun 30, 1989 Miscellaneous Other Rules
Jun 1, 1989 Jun 30, 1989 Nitrate MR No Yes — 10 mg/L — Archived Jun 30, 1989 Nitrate Rule
Jun 1, 1989 Jun 30, 1989 Selenium MR No Yes — 0.05 mg/L — Archived Jun 30, 1989 Inorganic Chemicals
Jun 1, 1988 Jun 30, 1988 Other No No — — — Archived Jun 30, 1988 Miscellaneous Other Rules
Jun 1, 1988 Jun 30, 1988 Selenium MR No Yes — 0.05 mg/L — Archived Jun 30, 1988 Inorganic Chemicals
Jun 1, 1988 Jun 30, 1988 Fluoride MR No Yes — 4.0 mg/L — Archived Jun 30, 1988 Inorganic Chemicals
Jun 1, 1988 Jun 30, 1988 Arsenic MR No Yes — 0.010 mg/L — Archived Jun 30, 1988 Arsenic Rule
Jun 1, 1988 Jun 30, 1988 Nitrate MR No Yes — 10 mg/L — Archived Jun 30, 1988 Nitrate Rule
— — — 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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