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MT LEMMON DWID

Arizona — Community Water System — PWSID: AZ0410140

System Information

PWSIDAZ0410140
System NameMT LEMMON DWID
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedOct 5, 1979
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityTUCSON
ZIP Code85730
Address7431 E 42ND ST
OrganizationDAVIS, NATHAN L
Phone520-576-1538

Population & Service

Population Served290
Service Connections344

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
Mar 24, 2024 — Public Notice Other No No — — — Resolved Apr 5, 2023 Public Notice Rule and Revised PN Rule
Mar 24, 2024 — Public Notice Other No No — — — Resolved Apr 5, 2023 Public Notice Rule and Revised PN Rule
Jan 1, 2024 Dec 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Dec 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2023 Feb 28, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2023 Revised Total Coliform Rule
Feb 1, 2023 Feb 28, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2023 Revised Total Coliform Rule
Feb 1, 2023 Feb 28, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2023 Revised Total Coliform Rule
Feb 1, 2023 Feb 28, 2023 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2023 Revised Total Coliform Rule
Jan 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Oct 20, 2022 Lead and Copper Rule
Jan 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Oct 20, 2022 Lead and Copper Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived 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 — Archived 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 — Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
May 1, 2022 — Revised Total Coliform Rule RPT No No — — — Resolved Aug 24, 2022 Revised Total Coliform Rule
May 1, 2022 — Revised Total Coliform Rule RPT No No — — — Resolved Aug 24, 2022 Revised Total Coliform Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jul 8, 2021 Consumer Confidence Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jul 8, 2021 Consumer Confidence Rule
Oct 1, 2020 — Lead and Copper Rule MR No No — TT — Resolved Oct 20, 2020 Lead and Copper Rule
Oct 1, 2020 — Lead and Copper Rule MR No No — TT — Resolved Oct 20, 2020 Lead and Copper Rule
Nov 3, 2017 — Lead and Copper Rule MR No No — TT — Resolved Nov 17, 2017 Lead and Copper Rule
Apr 1, 2016 Jun 30, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 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
Jan 1, 2015 Mar 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Mar 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2014 Dec 31, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2014 Dec 31, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2014 Jun 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Mar 31, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved May 1, 2014 Consumer Confidence Rule
Oct 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved May 1, 2014 Consumer Confidence Rule
Oct 1, 2013 Dec 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved May 1, 2014 Consumer Confidence Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved May 1, 2014 Consumer Confidence Rule
Jul 1, 2013 Sep 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2013 Mar 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 — Lead and Copper Rule MR No No — TT — Resolved Feb 13, 2013 Lead and Copper Rule
Oct 1, 2012 Dec 31, 2012 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 — Lead and Copper Rule MR No No — TT — Resolved Feb 13, 2013 Lead and Copper Rule
Oct 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved May 1, 2014 Consumer Confidence Rule
Jul 1, 2012 Sep 30, 2012 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2012 Stage 1 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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