Public Water Partners

Ft Defiance, NN

Tsa Yah Toh NTUA Water System

Consumer Confidence Report status

Tsa Yah Toh NTUA must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show 1 item for Tsa Yah Toh NTUA that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Navajo Nation’s official records. Always confirm current status with Navajo Nation before making decisions based on this information.

System facts

System ID (PWSID)
NN3500278
System type
Community Water System
Population served
865
Service connections
253
Ownership
Native American tribal
Water source
groundwater (wells)

Tsa Yah Toh NTUA is one of 77 community water systems in Navajo Nation in the 501 to 3,300 people size category, serving 865 people from groundwater.

As of August 1, 2026, its federal record holds 65 entries between 2004 and 2020, of which 1 remains open; none are health-based.

Of the 65, 64 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, volatile organic chemicals, and the Radionuclides and Revised Rad Rule.

Violation history

  • Monitoring, Routine (IDSE)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2020 – December 31, 2020

    Resolved

  • Monitoring, Routine (IDSE)

    —

    TTHM

    January 1, 2020 – December 31, 2020

    Resolved

  • Sample Siting Plan Errors (RTCR)

    —

    Revised Total Coliform Rule

    April 1, 2016

    Unaddressed

  • Failure Submit IDSE/Subpart V Plan Rpt

    —

    Stage 2 Disinfectants and Disinfection Byproducts Rule

    October 1, 2013 – February 18, 2025

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    December 1, 2012 – December 31, 2012

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    November 1, 2012 – November 30, 2012

    Resolved

  • Monitoring, Regular

    —

    Nitrite

    January 1, 2010 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    1,1,1-Trichloroethane

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Benzene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Toluene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Styrene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Combined Uranium

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Combined Radium (-226 and -228)

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    Vinyl chloride

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 2005 – December 31, 2010

    Resolved

  • Monitoring, Regular

    —

    ETHYLENE DIBROMIDE

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Chlordane

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Toxaphene

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) phthalate

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfoxide

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Aldicarb sulfone

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Aldicarb

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    2,3,7,8-TCDD

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Benzo(a)pyrene

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 2004 – December 31, 2004

    Resolved

  • Monitoring, Regular

    —

    1,2-DIBROMO-3-CHLOROPROPANE

    January 1, 2004 – December 31, 2004

    Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Enforcement actions

Common questions

Is Tsa Yah Toh NTUA required to publish a Consumer Confidence Report?

Yes. Tsa Yah Toh NTUA is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is Tsa Yah Toh NTUA’s next Consumer Confidence Report due?

Tsa Yah Toh NTUA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does Tsa Yah Toh NTUA have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show 1 item for Tsa Yah Toh NTUA that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

Navajo Tribal Utility Authority

9287296277

Ft Defiance, AZ 86504