Vehicle Safety
Recalls Search 320,000+ NHTSA safety recalls Complaints 2.1M+ consumer safety complaints TSBs 4.7M technical service bulletins VIN Lookup Decode any vehicle VIN instantly OBD Codes 12,000+ diagnostic trouble codes Fuel Economy EPA MPG data for all vehicles Statistics Recall trends & safety analysis
Consumer Safety
Product Safety 9,700+ CPSC product recalls Food Safety 28,600+ FDA food recalls Pet Safety 1.3M FDA animal adverse events Drug Safety 17,500+ FDA drug recalls Device Safety 38,400+ FDA device recalls Workplace Safety 102,900+ OSHA injury reports
Infrastructure
Bridge Safety 624,000 bridge inspections Aviation Safety 30,000+ NTSB aviation events Dam Safety 92,600 dam safety records Water Safety 433,000+ public water systems Railroad Safety 438,000+ rail crossings Pipeline Safety 8,800+ pipeline incidents
Public Health
Nursing Homes 14,700 CMS rated facilities Environmental 80,000+ hazardous sites & releases

Red Mesa NTUA

Arizona — Community Water System — PWSID: NN4903017

System Information

PWSIDNN4903017
System NameRed Mesa NTUA
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerYes
First ReportedAug 2, 1994
Last ReportedDec 31, 2025

Location & Contact

StateArizona
CityFt Defiance
ZIP Code86504
AddressOffice of Deputy General Manager
OrganizationNavajo Tribal Utility Authority
Phone9287296277

Population & Service

Population Served1,023
Service Connections299

Drinking Water Violations (108)

This water system has 108 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
Jul 1, 2024 Sep 30, 2024 Arsenic MCL Yes No .01163 MG/L 0.010 mg/L — Resolved Sep 30, 2024 Arsenic Rule
Jul 1, 2024 Sep 30, 2024 Arsenic MCL Yes No .01163 MG/L 0.010 mg/L — Resolved Sep 30, 2024 Arsenic Rule
Jul 1, 2024 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Jul 1, 2024 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Jul 1, 2024 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Apr 1, 2024 Jun 30, 2024 Arsenic MCL Yes No .01305 MG/L 0.010 mg/L — Resolved Jun 30, 2024 Arsenic Rule
Apr 1, 2024 Jun 30, 2024 Arsenic MCL Yes No .01305 MG/L 0.010 mg/L — Resolved Jun 30, 2024 Arsenic Rule
Apr 1, 2024 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Jan 1, 2024 Mar 31, 2024 Arsenic MCL Yes No .01323 MG/L 0.010 mg/L — Resolved Mar 31, 2024 Arsenic Rule
Jan 1, 2024 Mar 31, 2024 Arsenic MCL Yes No .01323 MG/L 0.010 mg/L — Resolved Mar 31, 2024 Arsenic Rule
Jan 1, 2024 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Oct 1, 2023 Dec 31, 2023 Arsenic MCL Yes No .0126 MG/L 0.010 mg/L — Resolved Dec 31, 2023 Arsenic Rule
Oct 1, 2023 Dec 31, 2023 Arsenic MCL Yes No .0126 MG/L 0.010 mg/L — Resolved Dec 31, 2023 Arsenic Rule
Oct 1, 2023 — Public Notice Other No No — — — Unaddressed — Public Notice Rule and Revised PN Rule
Jan 1, 2022 Mar 31, 2022 Arsenic MR No Yes — 0.010 mg/L — Resolved Mar 31, 2022 Arsenic Rule
Jan 1, 2019 Mar 31, 2019 Arsenic MR No Yes — 0.010 mg/L — Resolved Feb 12, 2019 Arsenic Rule
Jan 1, 2019 Mar 31, 2019 Arsenic MR No Yes — 0.010 mg/L — Resolved Feb 12, 2019 Arsenic Rule
Jan 1, 2019 Mar 31, 2019 Arsenic MR No Yes — 0.010 mg/L — Resolved Feb 12, 2019 Arsenic Rule
Jan 1, 2017 Mar 31, 2017 Arsenic MCL Yes No .0106 MG/L 0.010 mg/L — Resolved Mar 31, 2017 Arsenic Rule
Jan 1, 2017 Mar 31, 2017 Arsenic MCL Yes No .0106 MG/L 0.010 mg/L — Resolved Mar 31, 2017 Arsenic Rule
Jan 1, 2017 Mar 31, 2017 Arsenic MCL Yes No .0106 MG/L 0.010 mg/L — Resolved Mar 31, 2017 Arsenic Rule
Jan 1, 2017 — Public Notice Other No No — — — Resolved May 19, 2017 Public Notice Rule and Revised PN Rule
Apr 1, 2016 — Revised Total Coliform Rule Other No No — — — Resolved Mar 7, 2025 Revised Total Coliform Rule
Apr 1, 2016 — Revised Total Coliform Rule Other No No — — — Resolved Mar 7, 2025 Revised Total Coliform Rule
Oct 1, 2015 Dec 31, 2015 Arsenic MCL Yes No .0105 MG/L 0.010 mg/L — Resolved Dec 31, 2015 Arsenic Rule
Oct 1, 2015 Dec 31, 2015 Arsenic MCL Yes No .0105 MG/L 0.010 mg/L — Resolved Dec 31, 2015 Arsenic Rule
Oct 1, 2015 Dec 31, 2015 Arsenic MCL Yes No .0105 MG/L 0.010 mg/L — Resolved Dec 31, 2015 Arsenic Rule
Jul 1, 2014 Sep 30, 2014 Arsenic MCL Yes No .0109 MG/L 0.010 mg/L — Resolved Sep 30, 2014 Arsenic Rule
Jul 1, 2014 Sep 30, 2014 Arsenic MCL Yes No .0109 MG/L 0.010 mg/L — Resolved Sep 30, 2014 Arsenic Rule
Jul 1, 2014 — Public Notice Other No No — — — Resolved Jun 5, 2014 Public Notice Rule and Revised PN Rule
Jul 1, 2014 — Public Notice Other No No — — — Resolved Jun 5, 2014 Public Notice Rule and Revised PN Rule
Apr 1, 2014 Jun 30, 2014 Arsenic MCL Yes No .0122 MG/L 0.010 mg/L — Resolved Jun 30, 2014 Arsenic Rule
Apr 1, 2014 Jun 30, 2014 Arsenic MCL Yes No .0122 MG/L 0.010 mg/L — Resolved Jun 30, 2014 Arsenic Rule
Apr 1, 2014 — Public Notice Other No No — — — Resolved Nov 17, 2014 Public Notice Rule and Revised PN Rule
Apr 1, 2014 — Public Notice Other No No — — — Resolved Nov 17, 2014 Public Notice Rule and Revised PN Rule
Jan 1, 2014 Mar 31, 2014 Arsenic MCL Yes No .01256 MG/L 0.010 mg/L — Resolved Mar 31, 2014 Arsenic Rule
Jan 1, 2014 Mar 31, 2014 Arsenic MCL Yes No .01256 MG/L 0.010 mg/L — Resolved Mar 31, 2014 Arsenic Rule
Jan 1, 2014 — Public Notice Other No No — — — Resolved Nov 17, 2014 Public Notice Rule and Revised PN Rule
Jan 1, 2014 — Public Notice Other No No — — — Resolved Nov 17, 2014 Public Notice Rule and Revised PN Rule
Oct 1, 2013 Dec 31, 2013 Arsenic MCL Yes No .01329 MG/L 0.010 mg/L — Resolved Dec 31, 2013 Arsenic Rule
Oct 1, 2013 — Public Notice Other No No — — — Resolved Nov 17, 2014 Public Notice Rule and Revised PN Rule
Oct 1, 2013 — Public Notice Other No No — — — Resolved Nov 17, 2014 Public Notice Rule and Revised PN Rule
Oct 1, 2013 — Stage 2 Disinfectants and Disinfection Byproducts Rule MR No Yes — — — Resolved Feb 10, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2013 — Stage 2 Disinfectants and Disinfection Byproducts Rule MR No Yes — — — Resolved Feb 10, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2013 — Stage 2 Disinfectants and Disinfection Byproducts Rule MR No Yes — — — Resolved Feb 10, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2013 Dec 31, 2013 Arsenic MCL Yes No .01329 MG/L 0.010 mg/L — Resolved Dec 31, 2013 Arsenic Rule
Oct 1, 2013 Dec 31, 2013 Arsenic MCL Yes No .01329 MG/L 0.010 mg/L — Resolved Dec 31, 2013 Arsenic Rule
Jul 1, 2013 Sep 30, 2013 Arsenic MCL Yes No .01523 MG/L 0.010 mg/L — Resolved Sep 30, 2013 Arsenic Rule
Jul 1, 2013 Sep 30, 2013 Arsenic MCL Yes No .01523 MG/L 0.010 mg/L — Resolved Sep 30, 2013 Arsenic Rule
Apr 1, 2013 Jun 30, 2013 Arsenic MCL Yes No .01568 MG/L 0.010 mg/L — Resolved Jun 30, 2013 Arsenic 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.

Browse All Water Systems Water Safety Stats Water Safety Home
Browse All Water Systems Water Systems in Arizona