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COLDWATER CANYON 2

Arizona — Community Water System — PWSID: AZ0413192

System Information

PWSIDAZ0413192
System NameCOLDWATER CANYON 2
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 16, 1994
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityTUCSON
ZIP Code85745
AddressATTN VERONICA WENE
OrganizationCOLDWATER CANYON WATER CO
Phone520-624-1460

Population & Service

Population Served247
Service Connections109

Drinking Water Violations (147)

This water system has 147 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, 2025 Sep 30, 2025 Arsenic MR No Yes — 0.010 mg/L — Archived Sep 30, 2025 Arsenic Rule
Aug 1, 2023 Aug 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Aug 8, 2023 Revised Total Coliform Rule
Aug 1, 2023 Aug 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Aug 8, 2023 Revised Total Coliform Rule
Aug 1, 2023 Aug 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Aug 8, 2023 Revised Total Coliform Rule
Aug 1, 2023 Aug 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Aug 8, 2023 Revised Total Coliform Rule
Nov 25, 2022 — Public Notice Other No No — — — Resolved Jun 27, 2023 Public Notice Rule and Revised PN Rule
Nov 25, 2022 — Public Notice Other No No — — — Resolved Jun 27, 2023 Public Notice Rule and Revised PN Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2022 Arsenic Rule
Apr 1, 2022 Jun 30, 2022 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2022 Arsenic Rule
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Sep 27, 2021 — Lead and Copper Rule MR No No — TT — Resolved Jan 25, 2022 Lead and Copper Rule
Sep 27, 2021 — Lead and Copper Rule MR No No — TT — Resolved Jan 25, 2022 Lead and Copper Rule
Jul 1, 2021 Sep 30, 2021 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2021 Arsenic Rule
Jul 1, 2021 Sep 30, 2021 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2021 Arsenic Rule
Jul 1, 2021 Sep 30, 2021 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2021 Arsenic Rule
Jul 1, 2021 Sep 30, 2021 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2021 Arsenic Rule
Apr 1, 2020 Jun 30, 2020 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2020 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2020 Jun 30, 2020 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2020 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2019 — Consumer Confidence Rule Other No No — — — Resolved Jul 10, 2019 Consumer Confidence Rule
Jul 1, 2019 — Consumer Confidence Rule Other No No — — — Resolved Jul 10, 2019 Consumer Confidence Rule
Apr 1, 2019 Jun 30, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2019 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2019 Jun 30, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2019 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2019 — Lead and Copper Rule MR No No — TT — Resolved Feb 10, 2019 Lead and Copper Rule
Jan 1, 2019 — Lead and Copper Rule MR No No — TT — Resolved Feb 10, 2019 Lead and Copper Rule
Oct 1, 2018 Dec 31, 2018 Arsenic MCL Yes No .012 MG/L 0.010 mg/L .0105 Resolved Dec 31, 2018 Arsenic Rule
Oct 1, 2018 Dec 31, 2018 Arsenic MCL Yes No .012 MG/L 0.010 mg/L .0105 Resolved Dec 31, 2018 Arsenic Rule
Oct 1, 2018 Dec 31, 2018 Arsenic MCL Yes No .012 MG/L 0.010 mg/L .0105 Resolved Dec 31, 2018 Arsenic Rule
Jul 1, 2018 Sep 30, 2018 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2018 Arsenic Rule
Jul 1, 2018 Sep 30, 2018 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2018 Arsenic 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, 2017 Oct 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2017 Revised Total Coliform Rule
Oct 1, 2017 Oct 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2017 Revised Total Coliform Rule
Jul 1, 2017 Jul 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2017 Revised Total Coliform Rule
Oct 1, 2016 Dec 31, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 Dec 31, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2016 — Consumer Confidence Rule Other No No — — — Resolved Aug 5, 2016 Consumer Confidence Rule
Jul 1, 2016 Sep 30, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2016 Mar 31, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Dec 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Apr 30, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2015 Total Coliform Rule
Apr 1, 2015 Apr 30, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2015 Total Coliform Rule
Oct 1, 2014 — Consumer Confidence Rule Other No No — — — Resolved Oct 20, 2014 Consumer Confidence 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.

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