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DELHI CWD

California — Community Water System — PWSID: CA2410006

System Information

PWSIDCA2410006
System NameDELHI CWD
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CityDELHI
ZIP Code95315
AddressP.O. BOX 639
OrganizationMALDONADO, LEANDRO
Phone209-585-3003

Population & Service

Population Served7,784
Service Connections2,423

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
Jul 2, 2025 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Unaddressed — Lead and Copper Rule Revisions
Jul 1, 2015 — Consumer Confidence Rule Other No No — — — Resolved Sep 1, 2016 Consumer Confidence Rule
Jul 1, 2015 — Consumer Confidence Rule Other No No — — — Resolved Sep 1, 2016 Consumer Confidence Rule
Jan 1, 2015 Dec 31, 2015 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Dec 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Dec 31, 2015 Total Haloacetic Acids (HAA5) MR No No — 0.060 mg/L — Resolved Dec 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Dec 31, 2015 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Dec 31, 2015 TTHM MR No No — 0.080 mg/L — Resolved Dec 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Dec 31, 2013 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2013 Nitrate Rule
Jan 1, 2013 Dec 31, 2013 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2013 Nitrate Rule
Oct 1, 2004 Nov 30, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2004 Total Coliform Rule
Oct 1, 2004 Nov 30, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2004 Total Coliform Rule
Oct 1, 2002 Nov 30, 2002 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2002 Total Coliform Rule
Oct 1, 2002 Nov 30, 2002 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2002 Total Coliform Rule
Mar 1, 1996 Mar 31, 1996 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 1996 Total Coliform Rule
Mar 1, 1996 Mar 31, 1996 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 1996 Total Coliform Rule
Nov 1, 1995 Nov 30, 1995 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 1995 Total Coliform Rule
Jul 1, 1994 Aug 31, 1994 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 22, 1994 Total Coliform Rule
Sep 1, 1993 Sep 30, 1993 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Sep 30, 1993 Total Coliform Rule
May 1, 1984 May 31, 1984 Nitrate MCL Yes No — 10 mg/L — Archived May 31, 1984 Nitrate Rule
Apr 1, 1984 Apr 30, 1984 Nitrate MCL Yes No — 10 mg/L — Archived Apr 30, 1984 Nitrate Rule
Aug 1, 1983 Aug 31, 1983 Nitrate MCL Yes No — 10 mg/L — Archived Aug 31, 1983 Nitrate Rule
— — — No No — — — — — —
— — — No No — — — — — —
— — — 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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