Ft Defiance, NN

Cove NTUA Water System

Current status

No open violations on record as of July 4, 2026.

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): NN0403027
System type: Community Water System
Population served: 728
Service connections: 213
Ownership: Native American tribal
Water source: groundwater (wells)

Violation history

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
Failure Submit IDSE/Subpart V Plan Rpt
—
Stage 2 Disinfectants and Disinfection Byproducts Rule
October 1, 2013 – October 8, 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
—
trans-1,2-Dichloroethylene
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
—
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
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
—
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
—
Trichloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2008 – March 10, 2010
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Barium
January 1, 2008 – March 10, 2010
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2008 – March 10, 2010
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2008 – March 10, 2010
Resolved
Monitoring, Regular
—
Mercury
January 1, 2008 – March 10, 2010
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2003 – June 30, 2003
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2003 – June 30, 2003
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 31, 1996 – August 30, 1996
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 31, 1996 – August 30, 1996
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 31, 1996 – June 29, 1996
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 31, 1996 – June 29, 1996
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
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, 2013 – October 8, 2025	Failure Submit IDSE/Subpart V Plan Rpt	Stage 2 Disinfectants and Disinfection Byproducts Rule	—	Resolved
December 1, 2012 – December 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2012 – November 30, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Benzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Toluene	—	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, 2013	Monitoring, Regular	ETHYLENE DIBROMIDE	—	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	p-Dichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2-Dichloropropane	—	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, 2008 – March 10, 2010	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2008 – March 10, 2010	Monitoring, Regular	Barium	—	Resolved
January 1, 2008 – March 10, 2010	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2008 – March 10, 2010	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2008 – March 10, 2010	Monitoring, Regular	Mercury	—	Resolved
June 1, 2003 – June 30, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
June 1, 2003 – June 30, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 31, 1996 – August 30, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 31, 1996 – August 30, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
May 31, 1996 – June 29, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 31, 1996 – June 29, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

October 8, 2025State Compliance achieved1 linked violation
April 29, 2025State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
April 29, 2025State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
July 12, 2021State Compliance achieved1 linked violation
July 12, 2021State Compliance achieved1 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 Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
March 31, 2021State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
March 31, 2021State Public Notification issued1 linked violation
March 31, 2021State Public Notification issued1 linked violation
August 25, 2017State Formal Notice of Violation issued1 linked violation
August 25, 2017State Public Notification issued1 linked violation
March 9, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
March 9, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
June 15, 2015State Compliance achieved1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Public Notification issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
March 20, 2014State Formal Notice of Violation issued1 linked violation
January 11, 2013State Formal Notice of Violation issued1 linked violation
January 11, 2013State Compliance achieved1 linked violation
December 11, 2012State Compliance achieved1 linked violation
November 2, 2012State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 2, 2012State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 2, 2012State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 2, 2012State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 2, 2012State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 10, 2012State Compliance achieved1 linked violation
November 16, 2011State Public Notification issued1 linked violation
November 16, 2011State Public Notification issued1 linked violation
November 16, 2011State Public Notification issued1 linked violation
November 16, 2011State Public Notification issued1 linked violation
November 16, 2011State Public Notification issued1 linked violation
November 16, 2011State Formal Notice of Violation issued1 linked violation
November 16, 2011State Formal Notice of Violation issued1 linked violation
November 16, 2011State Formal Notice of Violation issued1 linked violation
November 16, 2011State Formal Notice of Violation issued1 linked violation
November 16, 2011State Formal Notice of Violation issued1 linked violation
November 16, 2011State Formal Notice of Violation issued1 linked violation
November 16, 2011State Public Notification issued1 linked violation
March 10, 2010State Compliance achieved1 linked violation
March 10, 2010State Compliance achieved1 linked violation
March 10, 2010State Compliance achieved1 linked violation
March 10, 2010State Compliance achieved1 linked violation
March 10, 2010State Compliance achieved1 linked violation
March 16, 2007State Compliance achieved1 linked violation
December 5, 2000State Compliance achieved2 linked violations

Contact

Navajo Tribal Utility Authority

9287296277

Ft Defiance, AZ 86504