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MONTEZUMA RIMROCK WATER COMPANY

Arizona — Community Water System — PWSID: AZ0413071

System Information

PWSIDAZ0413071
System NameMONTEZUMA RIMROCK WATER COMPANY
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
CityRIMROCK
ZIP Code86335
Address—
OrganizationOLSEN, PATRICIA
Phone928-300-3291

Population & Service

Population Served439
Service Connections244

Drinking Water Violations (316)

This water system has 316 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
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
Mar 1, 2023 — Revised Total Coliform Rule RPT No No — — — Resolved Apr 27, 2023 Revised Total Coliform Rule
Mar 1, 2023 — Revised Total Coliform Rule RPT No No — — — Resolved Apr 27, 2023 Revised Total Coliform Rule
Jan 1, 2023 Dec 31, 2025 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2022 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 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 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 Sep 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 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
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
Aug 1, 2019 Jul 31, 2022 TTHM MR No Yes — 0.080 mg/L — Archived Jul 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2019 Sep 30, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2019 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2019 — Consumer Confidence Rule Other No No — — — Resolved Jul 7, 2019 Consumer Confidence Rule
Jul 1, 2019 — Consumer Confidence Rule Other No No — — — Resolved Jul 7, 2019 Consumer Confidence Rule
Jul 1, 2019 Sep 30, 2019 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2019 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 — Consumer Confidence Rule Other No No — — — Resolved Jul 4, 2018 Consumer Confidence Rule
Jul 1, 2018 — Consumer Confidence Rule Other No No — — — Resolved Jul 4, 2018 Consumer Confidence Rule
Oct 1, 2017 Dec 31, 2017 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2017 Arsenic Rule
Oct 1, 2017 Dec 31, 2017 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2017 Arsenic Rule
Oct 1, 2016 Dec 31, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 Dec 31, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2016 Sep 30, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2016 — Consumer Confidence Rule Other No No — — — Resolved Aug 22, 2016 Consumer Confidence Rule
Jan 1, 2016 Mar 31, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Dec 31, 2015 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2015 Arsenic 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
Jul 1, 2015 — Consumer Confidence Rule Other No No — — — Resolved Jul 13, 2015 Consumer Confidence Rule
Sep 1, 2014 Sep 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2014 Total Coliform Rule
Sep 1, 2014 Sep 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2014 Total Coliform Rule
Aug 1, 2014 Aug 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2014 Total Coliform Rule
Aug 1, 2014 Aug 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2014 Total Coliform Rule
Apr 1, 2014 Jun 30, 2014 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2014 Arsenic Rule
Apr 1, 2014 Jun 30, 2014 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2014 Arsenic Rule
Jan 1, 2013 Mar 31, 2013 Arsenic MCL Yes No .016 MG/L 0.010 mg/L .01 Resolved Mar 31, 2013 Arsenic Rule
Oct 1, 2012 Dec 31, 2012 Arsenic MCL Yes No .023 MG/L 0.010 mg/L .01 Resolved Dec 31, 2012 Arsenic Rule
Oct 1, 2012 Dec 31, 2012 Arsenic MCL Yes No .023 MG/L 0.010 mg/L .01 Resolved Dec 31, 2012 Arsenic Rule
Oct 1, 2012 Dec 31, 2012 Arsenic MCL Yes No .024 MG/L 0.010 mg/L .01 Resolved Dec 31, 2012 Arsenic Rule
Oct 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved May 27, 2014 Consumer Confidence Rule
Oct 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved May 27, 2014 Consumer Confidence 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 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 Dec 31, 2012 Arsenic MCL Yes No .023 MG/L 0.010 mg/L .01 Resolved Dec 31, 2012 Arsenic Rule
Oct 1, 2012 Dec 31, 2012 Arsenic MCL Yes No .023 MG/L 0.010 mg/L .01 Resolved Dec 31, 2012 Arsenic Rule
Oct 1, 2012 — Consumer Confidence Rule Other No No — — — Resolved May 27, 2014 Consumer Confidence 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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