Drinking Water Compliance OS

Ft Defiance, NN

White Rock-Lake Valley NTUA Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)
NN3500269
System type
Community Water System
Population served
492
Service connections
144
Ownership
Native American tribal
Water source
groundwater (wells)

Violation history

  • Monitoring, Regular

    Arsenic

    January 1, 2024 – December 31, 2024

    Archived
  • Monitoring, Regular

    Arsenic

    January 1, 2020 – December 31, 2020

    Resolved
  • Sample Siting Plan Errors (RTCR)

    Revised Total Coliform Rule

    April 1, 2016

    Unaddressed
  • 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
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    April 1, 2012 – April 30, 2012

    Resolved
  • Monitoring, Routine Minor (TCR)

    Coliform (TCR)

    October 1, 2011 – October 31, 2011

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    September 1, 2011 – September 30, 2011

    Resolved
  • Monitoring, Regular

    Beryllium, Total

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    1,2-DIBROMO-3-CHLOROPROPANE

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Barium

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Cadmium

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Chromium

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Fluoride

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Selenium

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Antimony, Total

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Arsenic

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    ETHYLENE DIBROMIDE

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2011 – December 31, 2013

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2011 – December 31, 2013

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    September 1, 2010 – September 30, 2010

    Resolved
  • Monitoring, Regular

    Nitrite

    January 1, 2010 – December 31, 2010

    Resolved
  • Monitoring and Reporting (DBP)

    Total Haloacetic Acids (HAA5)

    January 1, 2010 – December 31, 2010

    Resolved
  • Monitoring and Reporting (DBP)

    TTHM

    January 1, 2010 – December 31, 2010

    Resolved
  • Monitoring, Regular

    ETHYLENE DIBROMIDE

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Routine Minor (TCR)

    Coliform (TCR)

    January 1, 2008 – January 31, 2008

    Resolved
  • Monitoring, Regular

    Mercury

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    1,2-DIBROMO-3-CHLOROPROPANE

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Thallium, Total

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Antimony, Total

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2008 – December 31, 2010

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    December 1, 2007 – December 28, 2007

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    November 1, 2003 – November 18, 2003

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    October 1, 2003 – October 31, 2003

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    April 1, 2002 – April 30, 2002

    Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Enforcement actions

Contact

Navajo Tribal Utility Authority

9287296277

Ft Defiance, AZ 86504