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Gap-Cedar Ridge NTUA

Arizona — Community Water System — PWSID: NN0403009

System Information

PWSIDNN0403009
System NameGap-Cedar Ridge NTUA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerYes
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 Served1,125
Service Connections329

Drinking Water Violations (88)

This water system has 88 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 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 Dec 31, 2015 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2014 Dec 31, 2016 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Atrazine MR No Yes — 0.003 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 2,3,7,8-TCDD MR No Yes — 0.00000003 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 2,4-D MR No Yes — 0.07 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Total Polychlorinated Biphenyls (PCB) MR No Yes — 0.0005 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 1,2-DIBROMO-3-CHLOROPROPANE MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 ETHYLENE DIBROMIDE MR No Yes — 0.00005 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Chlordane MR No Yes — 0.002 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Endrin MR No Yes — 0.002 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Toxaphene MR No Yes — 0.003 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Dalapon MR No Yes — 0.2 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Glyphosate MR No Yes — 0.7 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 LASSO MR No Yes — — — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Simazine MR No Yes — 0.004 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Endothall MR No Yes — 0.1 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Picloram MR No Yes — 0.5 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2014 Dec 31, 2016 Carbofuran MR No Yes — 0.04 mg/L — Resolved Dec 31, 2016 Synthetic Organic Chemicals
Jan 1, 2013 Dec 31, 2013 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2013 Nitrate Rule
Nov 1, 2011 Nov 30, 2011 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2011 Total Coliform Rule
Dec 1, 2009 Dec 31, 2009 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2009 Total Coliform Rule
Jan 1, 2008 Dec 31, 2010 ETHYLENE DIBROMIDE MR No Yes — 0.00005 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 1,2-DIBROMO-3-CHLOROPROPANE MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Aug 1, 2002 Aug 31, 2002 Coliform (TCR) MR No No — 5% of samples — Resolved Aug 31, 2002 Total Coliform Rule
Jul 1, 2002 — Consumer Confidence Rule Other No No — — — Resolved Jul 1, 2004 Consumer Confidence Rule
May 1, 2002 May 31, 2002 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2002 Total Coliform Rule
Jan 1, 2001 Dec 31, 2001 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Dec 31, 2001 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2001 Synthetic Organic Chemicals
Jan 1, 2001 Dec 31, 2001 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Dec 31, 2001 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Dec 31, 2001 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Dec 31, 2001 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2001 Volatile Organic Chemicals
Jan 1, 2001 Dec 31, 2001 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2001 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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