Vehicle Safety
Recalls Search 320,000+ NHTSA safety recalls Complaints 2.1M+ consumer safety complaints TSBs 4.7M technical service bulletins VIN Lookup Decode any vehicle VIN instantly OBD Codes 12,000+ diagnostic trouble codes Fuel Economy EPA MPG data for all vehicles Safety Ratings 11,700+ NHTSA crash test ratings Investigations 5,300+ NHTSA defect investigations Statistics Recall trends & safety analysis
Consumer Safety
Product Safety 9,700+ CPSC product recalls Food Safety 28,600+ FDA food recalls Pet Safety 1.3M FDA animal adverse events Drug Safety 17,500+ FDA drug recalls Device Safety 38,400+ FDA device recalls Workplace Safety 102,900+ OSHA injury reports Brand History Cross-category recall lookup by company
Infrastructure
Bridge Safety 624,000 bridge inspections Aviation Safety 30,000+ NTSB aviation events Dam Safety 92,600 dam safety records Water Safety 433,000+ public water systems Railroad Safety 438,000+ rail crossings Pipeline Safety 8,800+ pipeline incidents
Public Health
Nursing Homes 14,700 CMS rated facilities Environmental 80,000+ hazardous sites & releases

LA CASITA WATER COMPANY 3

Arizona — Community Water System — PWSID: AZ0420606

System Information

PWSIDAZ0420606
System NameLA CASITA WATER COMPANY 3
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedNov 16, 1992
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityTUCSON
ZIP Code85754
AddressATT SOUTH WESTERN UTILITIES - COMPLIANCE
OrganizationLA CASITA WATER CO
Phone520-772-5397

Population & Service

Population Served605
Service Connections248

Drinking Water Violations (113)

This water system has 113 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
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 2, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 2, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 2, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 2, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2019 — Revised Total Coliform Rule RPT No No — — — Resolved May 17, 2019 Revised Total Coliform Rule
Apr 1, 2019 — Revised Total Coliform Rule RPT No No — — — Resolved May 17, 2019 Revised Total Coliform Rule
May 1, 2010 May 31, 2010 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2010 Total Coliform Rule
May 1, 2010 May 31, 2010 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2010 Total Coliform Rule
Apr 1, 2010 Jun 30, 2010 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2010 Mar 31, 2010 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2009 Dec 31, 2009 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2009 Dec 31, 2009 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2009 — Consumer Confidence Rule Other No No — — — Resolved Oct 15, 2009 Consumer Confidence Rule
Jul 1, 2009 Sep 30, 2009 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2009 Jun 30, 2009 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2009 Total Coliform Rule
Jun 1, 2009 Jun 30, 2009 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Jun 30, 2009 Total Coliform 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
Mar 1, 2009 Mar 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Mar 31, 2009 Total Coliform Rule
Mar 1, 2009 Mar 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Mar 31, 2009 Total Coliform Rule
Jan 1, 2009 Dec 31, 2009 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2009 Nitrate Rule
Jan 1, 2009 Dec 31, 2009 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2009 Nitrate Rule
Jan 1, 2009 Mar 31, 2009 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2009 Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2008 Dec 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2008 Total Coliform Rule
Dec 1, 2008 Dec 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2008 Total Coliform Rule
Oct 1, 2008 Dec 31, 2008 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2008 Dec 31, 2008 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2008 — Consumer Confidence Rule Other No No — — — Resolved Nov 17, 2008 Consumer Confidence Rule
Jul 1, 2008 Sep 30, 2008 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2008 Sep 30, 2008 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2008 Jul 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2008 Total Coliform Rule
Jul 1, 2008 Jul 31, 2008 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2008 Total Coliform Rule
Apr 1, 2008 Jun 30, 2008 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2008 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2008 Nitrate Rule
Jan 1, 2008 Mar 31, 2008 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2008 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2008 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2008 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2008 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2008 Stage 1 Disinfectants and Disinfection Byproducts 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
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
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
Oct 1, 2005 — Lead and Copper Rule MR No No — TT — Resolved Dec 6, 2006 Lead and Copper Rule
Oct 1, 2004 Oct 31, 2004 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2004 Total Coliform Rule
Jul 1, 2004 Sep 30, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Sep 30, 2004 Nitrate Rule
Jul 1, 2004 Sep 30, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Sep 30, 2004 Nitrate Rule
Apr 1, 2004 Jun 30, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2004 Nitrate Rule
Apr 1, 2004 Jun 30, 2004 Nitrate MR No Yes — 10 mg/L — Resolved Jun 30, 2004 Nitrate 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.

Browse All Water Systems Water Safety Stats Water Safety Home
Browse All Water Systems Water Systems in Arizona