Ft. Defiance, NN

Teec Nos Pos Helium Plant Community OM Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of August 31, 2006. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in NN.

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): NN0403074
System type: Community Water System
Population served: 25
Service connections: 13
Ownership: Native American tribal
Water source: groundwater (wells)

Violation history

Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2006 – August 31, 2006
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2004 – August 31, 2004
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Diquat
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Endothall
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Simazine
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Picloram
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Endrin
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
LASSO
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
Vinyl chloride
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
Benzene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
Toluene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
Styrene
January 1, 2004 – December 31, 2004
Archived
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2004 – October 5, 2004
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2004 – October 5, 2004
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2004 – October 5, 2004
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2004 – October 5, 2004
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2004 – September 22, 2003
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2001 – October 31, 2001
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 30, 1996 – October 29, 1996
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 30, 1996 – October 29, 1996
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 2006 – August 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
August 1, 2004 – August 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Diquat	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Endothall	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Simazine	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Picloram	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Endrin	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	LASSO	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Vinyl chloride	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Tetrachloroethylene	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Benzene	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Toluene	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Styrene	—	Archived
January 1, 2004 – October 5, 2004	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2004 – October 5, 2004	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2004 – September 22, 2003	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2001 – October 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
September 30, 1996 – October 29, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
September 30, 1996 – October 29, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived

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

Enforcement actions

March 16, 2007State Compliance achieved1 linked violation
June 21, 2005State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 4, 2005State Violation/Reminder Notice18 linked violations
October 5, 2004State Compliance achieved38 linked violations
September 22, 2003State Compliance achieved1 linked violation

Last known contact on file (system is inactive)

Navajo Department of Water Resources

9287294033

Ft. Defiance, AZ 86504-0678