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CHAPARRAL WATER COMPANY

Arizona — Community Water System — PWSID: AZ0407064

System Information

PWSIDAZ0407064
System NameCHAPARRAL WATER COMPANY
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeMixed
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedOct 5, 1979
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityTUCSON
ZIP Code85754
AddressPO BOX 85160
OrganizationSOUTHWESTERN UTILITY MGMT INC
Phone520-623-5172

Population & Service

Population Served963
Service Connections358

Drinking Water Violations (238)

This water system has 238 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
Feb 1, 2021 — Revised Total Coliform Rule RPT No No — — — Resolved Mar 15, 2021 Revised Total Coliform Rule
Feb 1, 2021 — Revised Total Coliform Rule RPT No No — — — Resolved Mar 15, 2021 Revised Total Coliform Rule
Jan 1, 2020 — Revised Total Coliform Rule RPT No No — — — Resolved Feb 26, 2020 Revised Total Coliform Rule
Jan 1, 2020 — Revised Total Coliform Rule RPT No No — — — Resolved Feb 26, 2020 Revised Total Coliform Rule
Sep 1, 2019 — Revised Total Coliform Rule RPT No No — — — Resolved Oct 23, 2019 Revised Total Coliform Rule
Sep 1, 2019 — Revised Total Coliform Rule RPT No No — — — Resolved Oct 23, 2019 Revised Total Coliform Rule
Aug 1, 2018 — Revised Total Coliform Rule RPT No No — — — Resolved Sep 18, 2018 Revised Total Coliform Rule
Jul 1, 2018 Sep 30, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 Sep 30, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2013 Dec 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2013 Total Coliform Rule
Aug 1, 2013 Aug 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2013 Total Coliform Rule
Oct 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved Feb 22, 2013 Consumer Confidence 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
Oct 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Feb 22, 2013 Consumer Confidence 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
Jan 1, 2011 Mar 31, 2011 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2011 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2010 — Consumer Confidence Rule Other No No — — — Resolved Feb 22, 2013 Consumer Confidence Rule
Apr 1, 2009 Jun 30, 2009 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2009 Jun 30, 2009 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2008 — Consumer Confidence Rule Other No No — — — Resolved Jun 25, 2009 Consumer Confidence Rule
Oct 1, 2007 Dec 31, 2007 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 Sep 30, 2007 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 — Consumer Confidence Rule Other No No — — — Resolved Jul 11, 2007 Consumer Confidence Rule
Jul 1, 2007 Sep 30, 2007 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2007 Jun 30, 2007 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2007 Apr 30, 2007 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2007 Total Coliform Rule
Jan 1, 2007 Dec 31, 2007 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Dec 31, 2007 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2007 Mar 31, 2007 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2007 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2006 Dec 31, 2006 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2006 Sep 30, 2006 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2006 Jun 30, 2006 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2006 Dec 31, 2006 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2006 Dec 31, 2006 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2006 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2005 — Consumer Confidence Rule Other No No — — — Resolved Jul 20, 2005 Consumer Confidence Rule
Jan 1, 2005 Dec 31, 2005 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2005 Dec 31, 2005 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2005 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2004 — Consumer Confidence Rule Other No No — — — Resolved Jul 20, 2005 Consumer Confidence Rule
Oct 1, 2003 Dec 31, 2003 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2003 Inorganic Chemicals
Oct 1, 2003 Dec 31, 2003 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2003 Inorganic Chemicals
Jul 1, 2002 — Consumer Confidence Rule Other No No — — — Resolved Jul 2, 2003 Consumer Confidence Rule
Jan 1, 1999 Dec 31, 1999 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 1999 Nitrate Rule
Jan 1, 1998 Dec 31, 2000 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2000 Synthetic Organic Chemicals
Jan 1, 1998 Dec 31, 2000 Endrin MR No Yes — 0.002 mg/L — Resolved Dec 31, 2000 Synthetic Organic Chemicals
Jan 1, 1998 Dec 31, 2000 ETHYLENE DIBROMIDE MR No Yes — 0.00005 mg/L — Resolved Dec 31, 2000 Synthetic Organic Chemicals
Jan 1, 1998 Dec 31, 2000 Endrin MR No Yes — 0.002 mg/L — Resolved Dec 31, 2000 Synthetic Organic Chemicals
Jan 1, 1998 Dec 31, 2000 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2000 Volatile Organic Chemicals
Jan 1, 1998 Dec 31, 2000 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2000 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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