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SAN LUIS CITY OF

Arizona — Community Water System — PWSID: AZ0414005

System Information

PWSIDAZ0414005
System NameSAN LUIS 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
CitySAN LUIS
ZIP Code85349
AddressATTN: ANTONIO SANDOVAL
OrganizationSAN LUIS CITY OF
Phone928-341-8577

Population & Service

Population Served39,705
Service Connections6,100

Drinking Water Violations (665)

This water system has 665 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
Oct 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Nov 1, 2024 Lead and Copper Rule
Oct 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Nov 1, 2024 Lead and Copper Rule
Jun 6, 2024 — Groundwater Rule TT Yes No — — — Resolved Dec 30, 2024 Ground Water Rule
Jun 6, 2024 — Groundwater Rule TT Yes No — — — Resolved Dec 30, 2024 Ground Water Rule
Jun 6, 2024 — Groundwater Rule TT Yes No — — — Resolved Dec 30, 2024 Ground Water Rule
Jun 6, 2024 — Groundwater Rule TT Yes No — — — Resolved Dec 30, 2024 Ground Water Rule
Feb 1, 2024 — Revised Total Coliform Rule RPT No No — — — Resolved Mar 19, 2024 Revised Total Coliform Rule
Feb 1, 2024 — Revised Total Coliform Rule RPT No No — — — Resolved Mar 19, 2024 Revised Total Coliform Rule
Sep 28, 2021 — Lead and Copper Rule MR No No — TT — Resolved Jan 31, 2022 Lead and Copper Rule
Sep 28, 2021 — Lead and Copper Rule MR No No — TT — Resolved Jan 31, 2022 Lead and Copper Rule
Sep 8, 2021 — TTHM MR No No — 0.080 mg/L — Resolved Mar 7, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 8, 2021 — TTHM MR No No — 0.080 mg/L — Resolved Mar 7, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2021 — E. COLI MR No Yes — — — Resolved Jul 5, 2022 Ground Water Rule
Sep 1, 2021 — E. COLI MR No Yes — — — Resolved Jul 5, 2022 Ground Water Rule
Aug 5, 2021 — Groundwater Rule TT Yes No — — — Resolved Nov 12, 2021 Ground Water Rule
Aug 5, 2021 — Groundwater Rule TT Yes No — — — Resolved Nov 12, 2021 Ground Water Rule
Aug 5, 2021 — Groundwater Rule TT Yes No — — — Resolved Nov 12, 2021 Ground Water Rule
Aug 5, 2021 — Groundwater Rule TT Yes No — — — Resolved Nov 12, 2021 Ground Water Rule
Aug 1, 2021 — Revised Total Coliform Rule Other No No — — — Resolved Oct 28, 2021 Revised Total Coliform Rule
Aug 1, 2021 — Revised Total Coliform Rule Other No No — — — Resolved Oct 28, 2021 Revised Total Coliform Rule
Jul 1, 2019 — Consumer Confidence Rule Other No No — — — Resolved Sep 12, 2019 Consumer Confidence Rule
Jul 1, 2019 — Consumer Confidence Rule Other No No — — — Resolved Sep 12, 2019 Consumer Confidence Rule
Jul 1, 2019 — Consumer Confidence Rule Other No No — — — Resolved Sep 12, 2019 Consumer Confidence Rule
May 1, 2019 — Revised Total Coliform Rule RPT No No — — — Resolved Jul 8, 2019 Revised Total Coliform Rule
May 1, 2019 — Revised Total Coliform Rule RPT No No — — — Resolved Jul 8, 2019 Revised Total Coliform Rule
Sep 1, 2017 — Revised Total Coliform Rule RPT No No — — — Resolved Sep 11, 2017 Revised Total Coliform Rule
Feb 12, 2015 — E. COLI MR No Yes — — — Resolved Nov 8, 2017 Ground Water Rule
Feb 12, 2015 — E. COLI MR No Yes — — — Resolved Nov 8, 2017 Ground Water Rule
Jan 15, 2015 — E. COLI MR No Yes — — — Resolved Mar 17, 2015 Ground Water Rule
Jan 15, 2015 — E. COLI MR No Yes — — — Resolved Mar 17, 2015 Ground Water Rule
Jan 1, 2015 Jan 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2015 Total Coliform Rule
Jan 1, 2015 Jan 31, 2015 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2015 Total Coliform Rule
Dec 1, 2014 Dec 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2014 Total Coliform Rule
Dec 1, 2014 Dec 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2014 Total Coliform Rule
Jul 1, 2014 — Consumer Confidence Rule Other No No — — — Resolved Jul 11, 2014 Consumer Confidence Rule
Oct 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Aug 14, 2014 Consumer Confidence Rule
Oct 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Aug 14, 2014 Consumer Confidence Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Jul 11, 2014 Consumer Confidence Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Jul 11, 2014 Consumer Confidence Rule
Jan 1, 2012 Dec 31, 2014 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2014 Inorganic Chemicals
Jan 1, 2012 Dec 31, 2014 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2014 Inorganic Chemicals
Jan 1, 2012 Dec 31, 2014 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2014 Inorganic Chemicals
Jan 1, 2012 Dec 31, 2014 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2014 Inorganic Chemicals
Jan 1, 2012 Dec 31, 2014 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2014 Inorganic Chemicals
Jan 1, 2012 Dec 31, 2014 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2014 Inorganic Chemicals
Oct 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved May 23, 2012 Consumer Confidence Rule
Jul 1, 2011 Sep 30, 2011 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2011 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2011 Sep 30, 2011 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2011 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2011 — Consumer Confidence Rule Other No No — — — Resolved Apr 24, 2012 Consumer Confidence Rule
Oct 1, 2010 — Lead and Copper Rule MR No No — TT — Resolved Feb 17, 2011 Lead and Copper 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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