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TONTO HILLS DWID

Arizona — Community Water System — PWSID: AZ0407076

System Information

PWSIDAZ0407076
System NameTONTO HILLS DWID
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedOct 5, 1979
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityCAVE CREEK
ZIP Code85331
AddressATTN Jeff Frazey
OrganizationTONTO HILLS DWID
Phone480-595-0128

Population & Service

Population Served350
Service Connections150

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 14, 2025 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Jul 1, 2025 — Revised Total Coliform Rule RPT No No — — — Resolved Aug 29, 2025 Revised Total Coliform Rule
Jul 1, 2025 — Revised Total Coliform Rule RPT No No — — — Resolved Aug 29, 2025 Revised Total Coliform Rule
Jun 1, 2025 Jun 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Archived Jun 30, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2025 Jun 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Archived Jun 30, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2025 Jun 30, 2025 Surface Water Treatment Rule MR No Yes — — — Archived Jun 30, 2025 Surface Water Treatment Rule
Jun 1, 2025 Jun 30, 2025 Surface Water Treatment Rule MR No Yes — — — Archived Jun 30, 2025 Surface Water Treatment Rule
Oct 1, 2024 Oct 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Surface Water Treatment Rule
Oct 1, 2024 Oct 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Surface Water Treatment Rule
Sep 1, 2024 Sep 30, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Sep 30, 2024 Surface Water Treatment Rule
Sep 1, 2024 Sep 30, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Sep 30, 2024 Surface Water Treatment Rule
Jul 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jun 20, 2025 Lead and Copper Rule
Jul 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jun 20, 2025 Lead and Copper Rule
Jul 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jun 20, 2025 Lead and Copper Rule
Jul 1, 2024 Jul 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2024 Surface Water Treatment Rule
Jul 1, 2024 Jul 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2024 Surface Water Treatment Rule
Jul 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Jun 20, 2025 Lead and Copper Rule
Oct 1, 2023 Oct 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2023 Surface Water Treatment Rule
Oct 1, 2023 Oct 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2023 Surface Water Treatment Rule
Oct 1, 2023 Oct 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2023 Surface Water Treatment Rule
Sep 1, 2023 Sep 30, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Sep 30, 2023 Surface Water Treatment Rule
Sep 1, 2023 Sep 30, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Sep 30, 2023 Surface Water Treatment Rule
Sep 1, 2023 Sep 30, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Sep 30, 2023 Surface Water Treatment Rule
Aug 1, 2023 Aug 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Aug 31, 2023 Surface Water Treatment Rule
Aug 1, 2023 Aug 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Aug 31, 2023 Surface Water Treatment Rule
Aug 1, 2023 Aug 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Aug 31, 2023 Surface Water Treatment Rule
Aug 1, 2023 Aug 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Aug 31, 2023 Surface Water Treatment Rule
Jul 1, 2023 Jul 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2023 Surface Water Treatment Rule
Jul 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Nov 2, 2023 Lead and Copper Rule
Jul 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Nov 2, 2023 Lead and Copper Rule
Jul 1, 2023 Jul 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2023 Surface Water Treatment Rule
Jul 1, 2023 Jul 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2023 Surface Water Treatment Rule
Jul 1, 2023 Jul 31, 2023 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2023 Surface Water Treatment 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
Jul 1, 2022 Sep 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Jul 31, 2022 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2022 Surface Water Treatment Rule
Jul 1, 2022 Sep 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Jul 31, 2022 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2022 Surface Water Treatment Rule
Jul 1, 2021 Sep 30, 2021 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2021 Sep 30, 2021 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2021 Jun 30, 2021 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2021 Jun 30, 2021 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 — Lead and Copper Rule MR No No — TT — Resolved Jan 16, 2020 Lead and Copper Rule
Jan 1, 2020 — Lead and Copper Rule MR No No — TT — Resolved Jan 16, 2020 Lead and Copper Rule
Apr 1, 2017 Jun 30, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 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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