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Kayenta NTUA

Arizona — Community Water System — PWSID: NN0403003

System Information

PWSIDNN0403003
System NameKayenta 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 Served3,844
Service Connections1,134

Drinking Water Violations (257)

This water system has 257 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, 2024 Dec 31, 2024 Nitrite MR No Yes — 1 mg/L — Archived Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Archived Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Archived Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrite MR No Yes — 1 mg/L — Archived Dec 31, 2024 Nitrate 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, 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 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2020 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2017 Sep 30, 2017 Dinoseb MR No Yes — 0.007 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Dinoseb MR No Yes — 0.007 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Dinoseb MR No Yes — 0.007 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Simazine MR No Yes — 0.004 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Simazine MR No Yes — 0.004 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Glyphosate MR No Yes — 0.7 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Glyphosate MR No Yes — 0.7 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Endothall MR No Yes — 0.1 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Atrazine MR No Yes — 0.003 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Atrazine MR No Yes — 0.003 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Atrazine MR No Yes — 0.003 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 LASSO MR No Yes — — — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 LASSO MR No Yes — — — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 LASSO MR No Yes — — — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Toxaphene MR No Yes — 0.003 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 2,4-D MR No Yes — 0.07 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 2,4-D MR No Yes — 0.07 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Endrin MR No Yes — 0.002 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Endrin MR No Yes — 0.002 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Endrin MR No Yes — 0.002 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Toxaphene MR No Yes — 0.003 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Glyphosate MR No Yes — 0.7 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Diquat MR No Yes — 0.02 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Diquat MR No Yes — 0.02 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Diquat MR No Yes — 0.02 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 2,4-D MR No Yes — 0.07 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Endothall MR No Yes — 0.1 mg/L — Resolved Aug 7, 2017 Synthetic Organic Chemicals
Jul 1, 2017 Sep 30, 2017 Endothall MR No Yes — 0.1 mg/L — Resolved Aug 7, 2017 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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