Fort Defiance, NN

White Mesa 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): NN0400209
System type: Community Water System
Population served: 496
Service connections: 145
Ownership: Native American tribal
Water source: groundwater (wells)

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2024
Unaddressed
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2021 – June 8, 2022
Resolved
Monitoring, Routine (IDSE)
—
TTHM
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
January 1, 2020 – December 31, 2020
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2015 – November 14, 2015
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2015 – June 30, 2015
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2015 – June 30, 2015
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2015 – March 31, 2015
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2015 – March 31, 2015
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2014 – December 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2014 – December 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2014 – September 30, 2014
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2014 – September 30, 2014
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2013 – May 20, 2016
Resolved
Monitoring, Regular
—
Trichloroethylene
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
—
Benzene
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 and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
CYANIDE
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
—
Beryllium, Total
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
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
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2011 – December 31, 2013
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Toluene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Styrene
January 1, 2008 – December 31, 2010
Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
January 1, 2021 – June 8, 2022	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2015 – November 14, 2015	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2015 – June 30, 2015	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2015 – June 30, 2015	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2015 – March 31, 2015	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2014 – December 31, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2014 – September 30, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2014 – September 30, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2013 – May 20, 2016	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Benzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Styrene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Mercury	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Toluene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Styrene	—	Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

April 15, 2025State Formal Notice of Violation issued1 linked violation
June 8, 2022State Compliance achieved1 linked violation
March 29, 2022State Public Notification issued1 linked violation
March 29, 2022State Formal Notice of Violation issued1 linked violation
July 13, 2021State Compliance achieved1 linked violation
July 13, 2021State Compliance achieved1 linked violation
March 31, 2021State Public Notification issued1 linked violation
March 31, 2021State Formal Notice of Violation issued1 linked violation
March 31, 2021State Formal Notice of Violation issued1 linked violation
March 31, 2021State Public Notification issued1 linked violation
September 27, 2018State Formal Notice of Violation issued1 linked violation
September 27, 2018State Formal Notice of Violation issued1 linked violation
June 13, 2018State Compliance achieved1 linked violation
August 8, 2016State Compliance achieved1 linked violation
August 8, 2016State Compliance achieved1 linked violation
August 8, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
May 20, 2016State Compliance achieved1 linked violation
November 23, 2015State Compliance achievedgeneral compliance action — not tied to a specific violation on record
November 14, 2015State Compliance achieved1 linked violation
November 14, 2015State Compliance achieved1 linked violation
June 4, 2014State Compliance achieved1 linked violation
June 4, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
March 17, 2014State Compliance achieved1 linked violation
May 8, 2013State Compliance achieved1 linked violation
May 8, 2013State Compliance achieved1 linked violation
May 8, 2013State Compliance achieved1 linked violation
May 8, 2013State Compliance achieved1 linked violation
March 21, 2012State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
January 30, 2012State Compliance achieved1 linked violation
March 9, 2011State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record

Contact

Navajo Tribal Utility Authority

9287296239

Fort Defiance, AZ 86504-0170