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GW SANTA CRUZ WATER CO

Arizona — Community Water System — PWSID: AZ0411131

System Information

PWSIDAZ0411131
System NameGW SANTA CRUZ WATER CO
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedNov 26, 2002
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityMARICOPA
ZIP Code85138
Address—
OrganizationARMIJO, SUSAN
Phone480-328-9281

Population & Service

Population Served84,000
Service Connections17,123

Drinking Water Violations (220)

This water system has 220 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
Aug 1, 2025 Aug 31, 2025 Revised Total Coliform Rule MCL Yes No — — — Archived Aug 31, 2025 Revised Total Coliform Rule
Aug 1, 2025 Aug 31, 2025 Revised Total Coliform Rule MCL Yes No — — — Archived Aug 31, 2025 Revised Total Coliform Rule
Aug 1, 2025 Aug 31, 2025 Revised Total Coliform Rule MCL Yes No — — — Archived Aug 31, 2025 Revised Total Coliform Rule
Jul 19, 2025 — Public Notice Other No No — — — Resolved Sep 22, 2025 Public Notice Rule and Revised PN Rule
Jul 19, 2025 — Public Notice Other No No — — — Resolved Sep 22, 2025 Public Notice Rule and Revised PN Rule
Jul 19, 2025 — Public Notice Other No No — — — Resolved Sep 22, 2025 Public Notice Rule and Revised PN Rule
Jul 19, 2025 — Public Notice Other No No — — — Resolved Sep 22, 2025 Public Notice Rule and Revised PN Rule
Jul 19, 2025 — Public Notice Other No No — — — Resolved Sep 22, 2025 Public Notice Rule and Revised PN Rule
Jul 19, 2025 — Public Notice Other No No — — — Resolved Sep 22, 2025 Public Notice Rule and Revised PN Rule
Jul 19, 2025 — Public Notice Other No No — — — Resolved Sep 22, 2025 Public Notice Rule and Revised PN Rule
Jul 19, 2025 — Public Notice Other No No — — — Resolved Sep 22, 2025 Public Notice Rule and Revised PN Rule
Apr 1, 2024 Jun 30, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 Dec 31, 2023 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Radium-228 MR No Yes — — — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Radium-226 MR No Yes — — — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Radium-226 MR No Yes — — — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Radium-226 MR No Yes — — — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Radium-228 MR No Yes — — — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Radium-228 MR No Yes — — — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Radium-228 MR No Yes — — — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Radium-226 MR No Yes — — — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Sep 1, 2023 Sep 30, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2023 Revised Total Coliform Rule
Sep 1, 2023 Sep 30, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2023 Revised Total Coliform Rule
Sep 1, 2023 Sep 30, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Sep 30, 2023 Revised Total Coliform Rule
Jul 1, 2023 Sep 30, 2023 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Radium-226 MR No Yes — — — Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Radium-226 MR No Yes — — — Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Radium-228 MR No Yes — — — Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Radium-228 MR No Yes — — — Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Jul 1, 2023 Sep 30, 2023 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Sep 30, 2023 Radionuclides and Revised Rad Rule
Mar 1, 2021 May 31, 2021 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved May 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Mar 1, 2021 May 31, 2021 TTHM MR No Yes — 0.080 mg/L — Resolved May 31, 2021 Stage 2 Disinfectants and Disinfection Byproducts Rule
Mar 1, 2021 May 31, 2021 TTHM MR No Yes — 0.080 mg/L — Resolved May 31, 2021 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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