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 Safety Ratings 11,700+ NHTSA crash test ratings Investigations 5,300+ NHTSA defect investigations 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 Brand History Cross-category recall lookup by company
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 State Safety Dashboards Safety grades for all 50 U.S. states ZIP Safety Report Check any 5-digit ZIP across 9 datasets
Public Health
Nursing Homes 14,700 CMS rated facilities Environmental 80,000+ hazardous sites & releases
Blog

Vehicle Safety

Vehicle Recalls320,000+ NHTSA safety recalls Browse VehiclesEvery make, model and year Complaints2.1M+ consumer safety complaints TSBs4.7M technical service bulletins VIN LookupDecode any vehicle VIN instantly OBD Codes12,000+ diagnostic trouble codes Fuel EconomyEPA MPG data for all vehicles Safety Ratings11,700+ NHTSA crash test ratings Investigations5,300+ NHTSA defect investigations StatisticsRecall trends & safety analysis Compare VehiclesTwo vehicles side by side

Consumer Safety

Product Safety9,700+ CPSC product recalls Food Safety28,600+ FDA food recalls Pet Safety1.3M FDA animal adverse events Drug Safety17,500+ FDA drug recalls Device Safety38,400+ FDA device recalls Workplace Safety102,900+ OSHA injury reports Brand HistoryRecall lookup by company

Infrastructure

Bridge Safety624,000 bridge inspections Aviation Safety30,000+ NTSB aviation events Dam Safety92,600 dam safety records Water Safety433,000+ public water systems Railroad Safety438,000+ rail crossings Pipeline Safety8,800+ pipeline incidents State DashboardsSafety grades for all 50 states ZIP ReportAny 5-digit ZIP across 9 datasets

Public Health

Nursing Homes14,700 CMS rated facilities Environmental80,000+ hazardous sites & releases BlogGuides, news & safety insights

Mexican Water NTUA

Arizona - Community Water System - PWSID: NN4903072

System Information

PWSIDNN4903072
System NameMexican Water NTUA
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedDec 1, 2005
Last ReportedDec 31, 2025

Location & Contact

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

Population & Service

Population Served294
Service Connections86

Drinking Water Violations (141)

This water system has 141 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, 2024 - Other No No - - - Unaddressed - -
Apr 1, 2024 Jun 30, 2024 MCL Yes No .01128 MG/L 0.010 mg/L - Resolved Jun 30, 2024 -
Apr 1, 2024 Jun 30, 2024 MCL Yes No .01128 MG/L 0.010 mg/L - Resolved Jun 30, 2024 -
Jan 1, 2024 - Other No No - - - Unaddressed - -
Jan 1, 2024 Mar 31, 2024 MCL Yes No .01193 MG/L 0.010 mg/L - Resolved Mar 31, 2024 -
Jan 1, 2024 Mar 31, 2024 MCL Yes No .01193 MG/L 0.010 mg/L - Resolved Mar 31, 2024 -
Jan 1, 2024 Mar 31, 2024 MCL Yes No .01193 MG/L 0.010 mg/L - Resolved Mar 31, 2024 -
Oct 1, 2023 - Other No No - - - Resolved Dec 12, 2023 -
Oct 1, 2023 - Other No No - - - Resolved Dec 12, 2023 -
Oct 1, 2023 Dec 31, 2023 MCL Yes No .0117 MG/L 0.010 mg/L - Resolved Dec 31, 2023 -
Oct 1, 2023 Dec 31, 2023 MCL Yes No .0117 MG/L 0.010 mg/L - Resolved Dec 31, 2023 -
Jul 1, 2023 Sep 30, 2023 MCL Yes No .012 MG/L 0.010 mg/L - Resolved Sep 30, 2023 -
Jul 1, 2023 Sep 30, 2023 MCL Yes No .012 MG/L 0.010 mg/L - Resolved Sep 30, 2023 -
Jul 1, 2023 Sep 30, 2023 MCL Yes No .012 MG/L 0.010 mg/L - Resolved Sep 30, 2023 -
Jul 1, 2022 - Other No No - - - Unaddressed - -
Jul 1, 2022 Sep 30, 2022 MCL Yes No .0118 MG/L 0.010 mg/L - Resolved Sep 30, 2022 -
Jul 1, 2022 Sep 30, 2022 MCL Yes No .0118 MG/L 0.010 mg/L - Resolved Sep 30, 2022 -
Apr 1, 2022 - Other No No - - - Resolved Dec 12, 2023 -
Apr 1, 2022 - Other No No - - - Resolved Dec 12, 2023 -
Apr 1, 2022 Jun 30, 2022 MCL Yes No .0143 MG/L 0.010 mg/L - Resolved Jun 30, 2022 -
Apr 1, 2022 Jun 30, 2022 MCL Yes No .0143 MG/L 0.010 mg/L - Resolved Jun 30, 2022 -
Jan 1, 2022 Mar 31, 2022 MR No Yes - 0.010 mg/L - Resolved Mar 31, 2022 -
Jan 1, 2022 Mar 31, 2022 MCL Yes No .0114 MG/L 0.010 mg/L - Resolved Mar 31, 2022 -
Jan 1, 2022 - Other No No - - - Resolved Jul 1, 2023 -
Jan 1, 2022 - Other No No - - - Resolved Jul 1, 2023 -
Oct 1, 2021 - Other No No - - - Resolved Oct 25, 2022 -
Oct 1, 2021 Dec 31, 2021 MCL Yes No .0114 MG/L 0.010 mg/L - Resolved Dec 31, 2021 -
Oct 1, 2021 Dec 31, 2021 MCL Yes No .0114 MG/L 0.010 mg/L - Resolved Dec 31, 2021 -
Jun 1, 2021 Jun 30, 2021 MON No Yes - - - Resolved Jun 30, 2021 -
Jul 1, 2019 Sep 30, 2019 MCL Yes No .0109 MG/L 0.010 mg/L - Resolved Sep 30, 2019 -
Jul 1, 2019 Sep 30, 2019 MCL Yes No .0109 MG/L 0.010 mg/L - Resolved Sep 30, 2019 -
Jul 1, 2019 - Other No No - - - Resolved Oct 25, 2022 -
Jul 1, 2019 - Other No No - - - Resolved Oct 25, 2022 -
Jan 1, 2019 Mar 31, 2019 MR No Yes - 0.010 mg/L - Resolved Feb 12, 2019 -
Jan 1, 2019 Mar 31, 2019 MR No Yes - 0.010 mg/L - Resolved Feb 12, 2019 -
Jan 1, 2019 Mar 31, 2019 MR No Yes - 0.010 mg/L - Resolved Feb 12, 2019 -
Jul 1, 2016 Sep 30, 2016 MCL Yes No .0108 MG/L 0.010 mg/L - Resolved Jan 1, 2016 -
Jul 1, 2016 Sep 30, 2016 MCL Yes No .0108 MG/L 0.010 mg/L - Resolved Jan 1, 2016 -
Apr 1, 2016 Jun 30, 2016 MCL Yes No .0133 MG/L 0.010 mg/L - Resolved Jan 1, 2016 -
Apr 1, 2016 - Other No No - - - Resolved Mar 7, 2025 -
Apr 1, 2016 - Other No No - - - Resolved Mar 7, 2025 -
Apr 1, 2016 Jun 30, 2016 MCL Yes No .0133 MG/L 0.010 mg/L - Resolved Jan 1, 2016 -
Jan 1, 2016 Mar 31, 2016 MCL Yes No .0133 MG/L 0.010 mg/L - Resolved Jan 1, 2016 -
Jan 1, 2016 Mar 31, 2016 MCL Yes No .0133 MG/L 0.010 mg/L - Resolved Jan 1, 2016 -
Jan 1, 2016 Mar 31, 2016 MCL Yes No .0133 MG/L 0.010 mg/L - Resolved Jan 1, 2016 -
Oct 1, 2015 Dec 31, 2015 MCL Yes No .013 MG/L 0.010 mg/L - Resolved Dec 31, 2015 -
Oct 1, 2015 Dec 31, 2015 MCL Yes No .013 MG/L 0.010 mg/L - Resolved Dec 31, 2015 -
Oct 1, 2015 Dec 31, 2015 MCL Yes No .013 MG/L 0.010 mg/L - Resolved Dec 31, 2015 -
Oct 1, 2015 - Other No No - - - Resolved Jul 1, 2016 -
Oct 1, 2015 - Other No No - - - Resolved Jul 1, 2016 -

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