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CITY OF WILLCOX

Arizona — Community Water System — PWSID: AZ0402035

System Information

PWSIDAZ0402035
System NameCITY OF WILLCOX
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
CityWILLCOX
ZIP Code85643
Address101 S RAILROAD AVE STE B
OrganizationFINLEY, DAKOTA
Phone520-384-4271

Population & Service

Population Served3,236
Service Connections1,806

Drinking Water Violations (195)

This water system has 195 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 — Consumer Confidence Rule Other No No — — — Unaddressed — Consumer Confidence Rule
Oct 1, 2023 Dec 31, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Aug 16, 2024 Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Aug 16, 2024 Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Aug 16, 2024 Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Aug 16, 2024 Lead and Copper Rule
Sep 1, 2023 — Revised Total Coliform Rule RPT No No — — — Resolved Oct 17, 2023 Revised Total Coliform Rule
Sep 1, 2023 — Revised Total Coliform Rule RPT No No — — — Resolved Oct 17, 2023 Revised Total Coliform Rule
Sep 1, 2023 — Revised Total Coliform Rule RPT No No — — — Resolved Oct 17, 2023 Revised Total Coliform Rule
Aug 1, 2023 — Revised Total Coliform Rule RPT No No — — — Resolved Oct 17, 2023 Revised Total Coliform Rule
Aug 1, 2023 — Revised Total Coliform Rule RPT No No — — — Resolved Oct 17, 2023 Revised Total Coliform Rule
Aug 1, 2023 — Revised Total Coliform Rule RPT No No — — — Resolved Oct 17, 2023 Revised Total Coliform Rule
Jul 1, 2023 Sep 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2023 Jun 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2023 Jun 30, 2023 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 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 Dec 31, 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 Dec 31, 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 Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 29, 2022 — Public Notice Other No No — — — Resolved Aug 31, 2023 Public Notice Rule and Revised PN Rule
Apr 29, 2022 — Public Notice Other No No — — — Resolved Aug 31, 2023 Public Notice Rule and Revised PN Rule
Jan 1, 2022 Mar 31, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022 Mar 31, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2021 Aug 31, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2021 Aug 31, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2021 Aug 31, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2021 Aug 31, 2022 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2021 Aug 31, 2022 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2021 Aug 31, 2022 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2021 Aug 31, 2022 TTHM MR No Yes — 0.080 mg/L — Resolved Aug 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2021 Aug 31, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Aug 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jun 21, 2022 Consumer Confidence Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jun 21, 2022 Consumer Confidence Rule
Mar 1, 2021 — Revised Total Coliform Rule RPT No No — — — Resolved May 11, 2021 Revised Total Coliform Rule
Mar 1, 2021 — Revised Total Coliform Rule RPT No No — — — Resolved May 11, 2021 Revised Total Coliform Rule
Oct 1, 2020 Oct 31, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2020 Revised Total Coliform Rule
Oct 1, 2020 Oct 31, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 31, 2020 Revised Total Coliform Rule
Jul 1, 2020 Jul 31, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2020 Revised Total Coliform Rule
Jul 1, 2020 Jul 31, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2020 Revised Total Coliform Rule
Jul 1, 2020 Jul 31, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Jul 31, 2020 Revised Total Coliform 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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