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KOFA CANTONMENT AREA

Arizona — Non-Transient Non-Community — PWSID: AZ0414367

System Information

PWSIDAZ0414367
System NameKOFA CANTONMENT AREA
System TypeNon-Transient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypeFederal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedOct 5, 1979
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityYUMA
ZIP Code85365
AddressUS ARMY YUMA PROVING GROUND, AMIM-YMP-E
OrganizationBALLINGER, ANGELA
Phone928-328-2977

Population & Service

Population Served390
Service Connections64

Drinking Water Violations (222)

This water system has 222 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, 2017 — Lead and Copper Rule MR No No — TT — Resolved Jul 20, 2017 Lead and Copper Rule
Jul 1, 2017 — Lead and Copper Rule MR No No — TT — Resolved Jul 20, 2017 Lead and Copper Rule
Apr 1, 2016 Jun 30, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 TTHM MCL Yes No .096 MG/L 0.080 mg/L .08 Resolved Sep 30, 2014 Stage 2 Disinfectants and Disinfection Byproducts Rule
May 1, 2013 May 31, 2013 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2013 Total Coliform Rule
May 1, 2013 May 31, 2013 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2013 Total Coliform Rule
Apr 1, 2013 Jun 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Mar 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Dec 31, 2012 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Dec 31, 2012 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Jul 1, 2012 Sep 30, 2012 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2012 Jun 30, 2012 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2012 Jun 30, 2012 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2012 Arsenic Rule
Apr 1, 2012 Jun 30, 2012 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2012 Arsenic Rule
Jan 1, 2012 Dec 31, 2012 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2012 Nitrate Rule
Jan 1, 2012 Mar 31, 2012 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Dec 31, 2012 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Dec 31, 2012 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Dec 31, 2012 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Dec 31, 2012 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2012 Nitrate Rule
Jan 1, 2012 Mar 31, 2012 Arsenic MR No Yes — 0.010 mg/L — Resolved Mar 31, 2012 Arsenic Rule
Jan 1, 2012 Mar 31, 2012 Arsenic MR No Yes — 0.010 mg/L — Resolved Mar 31, 2012 Arsenic Rule
Jan 1, 2012 Dec 31, 2012 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2011 Dec 31, 2011 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2011 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2011 Dec 31, 2011 Arsenic MCL Yes No .023 MG/L 0.010 mg/L .01 Resolved Dec 31, 2011 Arsenic Rule
Oct 1, 2011 Dec 31, 2011 Arsenic MCL Yes No .023 MG/L 0.010 mg/L .01 Resolved Dec 31, 2011 Arsenic Rule
Oct 1, 2011 Dec 31, 2011 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2011 Arsenic Rule
Oct 1, 2011 Dec 31, 2011 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2011 Arsenic Rule
Jul 1, 2011 Sep 30, 2011 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2011 Arsenic Rule
Jul 1, 2011 Sep 30, 2011 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2011 Arsenic Rule
Jul 1, 2011 Sep 30, 2011 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2011 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2011 Sep 30, 2011 Arsenic MCL Yes No .024 MG/L 0.010 mg/L .01 Resolved Sep 30, 2011 Arsenic Rule
Jul 1, 2011 Sep 30, 2011 Arsenic MCL Yes No .024 MG/L 0.010 mg/L .01 Resolved Sep 30, 2011 Arsenic Rule
Apr 1, 2011 Jun 30, 2011 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2011 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2011 Jun 30, 2011 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2011 Arsenic Rule
Apr 1, 2011 Jun 30, 2011 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2011 Arsenic Rule
Apr 1, 2011 Jun 30, 2011 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2011 Arsenic Rule
Apr 1, 2011 Jun 30, 2011 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2011 Arsenic Rule
Jan 1, 2011 Dec 31, 2013 2,4-D MR No Yes — 0.07 mg/L — Resolved Dec 31, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Atrazine MR No Yes — 0.003 mg/L — Resolved Dec 31, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Picloram MR No Yes — 0.5 mg/L — Resolved Dec 31, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Mar 31, 2011 Arsenic MCL Yes No .017 MG/L 0.010 mg/L .01 Resolved Mar 31, 2011 Arsenic Rule
Jan 1, 2011 Dec 31, 2013 2,4-D MR No Yes — 0.07 mg/L — Resolved Dec 31, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Nickel MR No Yes — — — Resolved Dec 31, 2013 Inorganic Chemicals
Jan 1, 2011 Dec 31, 2013 LASSO MR No Yes — — — Resolved Dec 31, 2013 Synthetic Organic Chemicals
Jan 1, 2011 Dec 31, 2013 Nickel MR No Yes — — — Resolved Dec 31, 2013 Inorganic Chemicals

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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