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WINSLOW CITY OF

Arizona — Community Water System — PWSID: AZ0409035

System Information

PWSIDAZ0409035
System NameWINSLOW CITY OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedOct 5, 1979
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityWINSLOW
ZIP Code86047
Address21 WILLIAMSON AVE.
OrganizationWESTOVER, TIM
Phone928-289-1453

Population & Service

Population Served9,789
Service Connections3,267

Drinking Water Violations (232)

This water system has 232 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
Apr 1, 2025 Apr 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Archived Apr 30, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2025 Apr 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Archived Apr 30, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 2, 2024 — Consumer Confidence Rule Other No No — — — Unaddressed — Consumer Confidence Rule
Aug 8, 2024 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Aug 8, 2024 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Jul 1, 2024 — Consumer Confidence Rule Other No No — — — Resolved Jun 30, 2024 Consumer Confidence Rule
Jul 1, 2024 — Consumer Confidence Rule Other No No — — — Resolved Jun 30, 2024 Consumer Confidence Rule
Apr 1, 2023 Jun 30, 2023 2,4-D MR No Yes — 0.07 mg/L — Resolved Jun 30, 2023 Synthetic Organic Chemicals
Apr 1, 2023 Jun 30, 2023 2,4-D MR No Yes — 0.07 mg/L — Resolved Jun 30, 2023 Synthetic Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Jun 30, 2023 Synthetic Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Jun 30, 2023 Synthetic Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Jun 30, 2023 Synthetic Organic Chemicals
Apr 1, 2023 Jun 30, 2023 2,4-D MR No Yes — 0.07 mg/L — Resolved Jun 30, 2023 Synthetic Organic Chemicals
Jan 1, 2023 Mar 31, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Mar 31, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 — Lead and Copper Rule MR No No — TT — Unaddressed — Lead and Copper Rule
Oct 2, 2022 — Consumer Confidence Rule Other No No — — — Resolved Aug 24, 2023 Consumer Confidence Rule
Oct 2, 2022 — Consumer Confidence Rule Other No No — — — Resolved Aug 24, 2023 Consumer Confidence Rule
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Aug 24, 2023 Consumer Confidence Rule
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Aug 24, 2023 Consumer Confidence Rule
Oct 2, 2020 — Consumer Confidence Rule Other No No — — — Resolved Oct 2, 2020 Consumer Confidence Rule
Oct 2, 2020 — Consumer Confidence Rule Other No No — — — Resolved Oct 2, 2020 Consumer Confidence Rule
Aug 1, 2020 Jul 31, 2021 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jul 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2020 Jul 31, 2021 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jul 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2020 Jul 31, 2021 TTHM MR No Yes — 0.080 mg/L — Resolved Jul 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2020 Jul 31, 2021 TTHM MR No Yes — 0.080 mg/L — Resolved Jul 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2020 — Consumer Confidence Rule Other No No — — — Resolved Sep 1, 2020 Consumer Confidence Rule
Jul 1, 2020 — Consumer Confidence Rule Other No No — — — Resolved Sep 1, 2020 Consumer Confidence Rule
Jan 1, 2020 — Lead and Copper Rule MR No No — TT — Resolved Dec 4, 2019 Lead and Copper Rule
Jan 1, 2020 — Lead and Copper Rule MR No No — TT — Resolved Dec 4, 2019 Lead and Copper Rule
Oct 1, 2019 Dec 31, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2019 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2019 Dec 31, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 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
Oct 1, 2018 Dec 31, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 1, 2018 — Revised Total Coliform Rule RPT No No — — — Resolved Sep 24, 2018 Revised Total Coliform Rule
Aug 1, 2018 — Revised Total Coliform Rule RPT No No — — — Resolved Sep 24, 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, 2017 — Consumer Confidence Rule Other No No — — — Resolved Nov 7, 2018 Consumer Confidence Rule
Oct 1, 2017 — Consumer Confidence Rule Other No No — — — Resolved Nov 7, 2018 Consumer Confidence Rule
Apr 1, 2017 Jun 30, 2017 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2017 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2017 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 — Consumer Confidence Rule Other No No — — — Resolved Apr 13, 2017 Consumer Confidence 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
Oct 1, 2016 — Consumer Confidence Rule Other No No — — — Resolved Apr 13, 2017 Consumer Confidence Rule
Aug 1, 2016 Jul 31, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jul 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts 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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