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Lukachukai NTUA

Arizona — Community Water System — PWSID: NN0403047

System Information

PWSIDNN0403047
System NameLukachukai NTUA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedFeb 2, 1984
Last ReportedDec 31, 2025

Location & Contact

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

Population & Service

Population Served1,659
Service Connections485

Drinking Water Violations (75)

This water system has 75 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
Jan 1, 2020 Dec 31, 2020 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 Dec 31, 2020 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 Dec 31, 2020 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 Dec 31, 2020 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 Dec 31, 2020 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 Dec 31, 2020 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2016 — Revised Total Coliform Rule Other No No — — — Resolved Feb 10, 2025 Revised Total Coliform Rule
Apr 1, 2016 — Revised Total Coliform Rule Other No No — — — Resolved Feb 10, 2025 Revised Total Coliform Rule
Oct 1, 2013 — Stage 2 Disinfectants and Disinfection Byproducts Rule MR No Yes — — — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2013 — Stage 2 Disinfectants and Disinfection Byproducts Rule MR No Yes — — — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2012 Dec 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2012 Total Coliform Rule
Dec 1, 2012 Dec 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2012 Total Coliform Rule
Nov 1, 2012 Nov 30, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2012 Total Coliform Rule
Oct 1, 2012 Dec 31, 2012 Arsenic MCL Yes No .0203 MG/L 0.010 mg/L — Resolved Dec 31, 2012 Arsenic Rule
Oct 1, 2012 Dec 31, 2012 Arsenic MCL Yes No .0203 MG/L 0.010 mg/L — Resolved Dec 31, 2012 Arsenic Rule
Oct 1, 2012 Dec 31, 2012 Arsenic MCL Yes No .0203 MG/L 0.010 mg/L — Resolved Dec 31, 2012 Arsenic Rule
Jul 1, 2012 Sep 30, 2012 Arsenic MCL Yes No .0203 MG/L 0.010 mg/L — Resolved Sep 30, 2012 Arsenic Rule
Jul 1, 2012 Sep 30, 2012 Arsenic MCL Yes No .0203 MG/L 0.010 mg/L — Resolved Sep 30, 2012 Arsenic Rule
Jul 1, 2012 Sep 30, 2012 Arsenic MCL Yes No .0203 MG/L 0.010 mg/L — Resolved Sep 30, 2012 Arsenic Rule
Jul 1, 2012 Sep 30, 2012 Arsenic MCL Yes No .0203 MG/L 0.010 mg/L — Resolved Sep 30, 2012 Arsenic Rule
Apr 1, 2012 Jun 30, 2012 Arsenic MCL Yes No .02763 MG/L 0.010 mg/L — Resolved Jun 30, 2012 Arsenic Rule
Apr 1, 2012 Jun 30, 2012 Arsenic MCL Yes No .02763 MG/L 0.010 mg/L — Resolved Jun 30, 2012 Arsenic Rule
Apr 1, 2012 Jun 30, 2012 Arsenic MCL Yes No .02763 MG/L 0.010 mg/L — Resolved Jun 30, 2012 Arsenic Rule
Apr 1, 2012 Jun 30, 2012 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2012 Arsenic Rule
Apr 1, 2012 Jun 30, 2012 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2012 Arsenic Rule
Apr 1, 2012 Jun 30, 2012 Arsenic MR No Yes — 0.010 mg/L — Resolved Jun 30, 2012 Arsenic Rule
Apr 1, 2012 Jun 30, 2012 Arsenic MCL Yes No .02763 MG/L 0.010 mg/L — Resolved Jun 30, 2012 Arsenic Rule
Jan 1, 2012 Mar 31, 2012 Arsenic MCL Yes No .02143 MG/L 0.010 mg/L — Resolved Mar 31, 2012 Arsenic Rule
Jan 1, 2012 Mar 31, 2012 Arsenic MCL Yes No .02143 MG/L 0.010 mg/L — Resolved Mar 31, 2012 Arsenic Rule
Jan 1, 2012 Mar 31, 2012 Arsenic MCL Yes No .02143 MG/L 0.010 mg/L — Resolved Mar 31, 2012 Arsenic Rule
Jan 1, 2012 Mar 31, 2012 Arsenic MCL Yes No .02143 MG/L 0.010 mg/L — Resolved Mar 31, 2012 Arsenic Rule
Jan 1, 2012 Mar 31, 2012 Arsenic MCL Yes No .02143 MG/L 0.010 mg/L — Resolved Mar 31, 2012 Arsenic Rule
Jan 1, 2012 Mar 31, 2012 Arsenic MCL Yes No .02143 MG/L 0.010 mg/L — Resolved Mar 31, 2012 Arsenic Rule
Jan 1, 2012 Mar 31, 2012 Arsenic MCL Yes No .02143 MG/L 0.010 mg/L — Resolved Mar 31, 2012 Arsenic Rule
Jan 1, 2010 Dec 31, 2010 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2010 Nitrate Rule
Jan 1, 2009 Jan 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 29, 2009 Total Coliform Rule
Jan 1, 2009 Jan 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 29, 2009 Total Coliform Rule
Jan 1, 2009 Jan 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 29, 2009 Total Coliform Rule
Jan 1, 2005 Dec 31, 2010 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals
Jan 1, 2005 Dec 31, 2010 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Volatile Organic Chemicals

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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