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Tuba City NTUA

Arizona — Community Water System — PWSID: NN0400206

System Information

PWSIDNN0400206
System NameTuba City NTUA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedSep 28, 2018
Last ReportedDec 31, 2025

Location & Contact

StateArizona
CityFort Defiance
ZIP Code86504-0170
AddressPO Box 170
OrganizationNavajo Tribal Utility Authority
Phone9287296239

Population & Service

Population Served6,276
Service Connections1,835

Drinking Water Violations (66)

This water system has 66 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 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
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, 2015 Mar 31, 2015 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Mar 31, 2015 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2014 Apr 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Apr 30, 2014 Total Coliform Rule
Jan 1, 2014 — Lead and Copper Rule MR No No — TT — Resolved May 20, 2016 Lead and Copper Rule
Jan 1, 2013 — Lead and Copper Rule MR No No — TT — Resolved May 20, 2016 Lead and Copper Rule
Jan 1, 2012 Dec 31, 2012 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2012 Dec 31, 2012 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2012 Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2011 Dec 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2011 Total Coliform Rule
Nov 1, 2011 Nov 30, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2011 Total Coliform Rule
Oct 1, 2011 Oct 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Oct 31, 2011 Total Coliform Rule
Sep 1, 2011 Sep 30, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Sep 30, 2011 Total Coliform Rule
Aug 1, 2011 Aug 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2011 Total Coliform Rule
Jul 1, 2011 Jul 31, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Jul 31, 2011 Total Coliform Rule
Jan 1, 2011 Dec 31, 2011 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2011 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2011 Dec 31, 2011 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2011 Stage 1 Disinfectants and Disinfection Byproducts Rule
Nov 1, 2010 — E. COLI MR No Yes — — — Resolved Jun 20, 2011 Ground Water Rule
Jan 1, 2008 Dec 31, 2010 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Endothall MR No Yes — 0.1 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Total Polychlorinated Biphenyls (PCB) MR No Yes — 0.0005 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Glyphosate MR No Yes — 0.7 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Dalapon MR No Yes — 0.2 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Atrazine MR No Yes — 0.003 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Toxaphene MR No Yes — 0.003 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 LASSO MR No Yes — — — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Chlordane MR No Yes — 0.002 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Carbofuran MR No Yes — 0.04 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 2,3,7,8-TCDD MR No Yes — 0.00000003 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 2,4-D MR No Yes — 0.07 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Picloram MR No Yes — 0.5 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Simazine MR No Yes — 0.004 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 Endrin MR No Yes — 0.002 mg/L — Resolved Dec 31, 2010 Synthetic 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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