Is Chuska Community Boarding School BIA required to publish a Consumer Confidence Report?

Yes. Chuska Community Boarding School BIA 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 Chuska Community Boarding School BIA’s next Consumer Confidence Report due?

Chuska Community Boarding School BIA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

Tohatchi, NN

Chuska Community Boarding School BIA Water System

Consumer Confidence Report status

Chuska Community Boarding School BIA 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 Chuska Community Boarding School BIA 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): NN3536003
System type: Community Water System
Population served: 348
Service connections: 87
Ownership: federal government
Water source: groundwater (wells)

Chuska Community Boarding School BIA is one of 125 community water systems in Navajo Nation in the 500 or fewer people size category, serving 348 people from groundwater.

As of August 1, 2026, its federal record holds 108 entries between 2001 and 2025, of which 1 remains open; none are health-based.

Of the 108, 104 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 Total Coliform Rules.

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2025 – September 30, 2025
Archived
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2025 – September 30, 2025
Archived
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
April 1, 2025
Unaddressed
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2025 – February 12, 2025
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2025 – February 12, 2025
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2024 – December 10, 2024
Resolved
Monitoring, Regular
—
Nitrite
January 1, 2024 – December 10, 2024
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
January 1, 2022 – December 31, 2024
Resolved
Monitoring, Routine (IDSE)
—
TTHM
January 1, 2022 – December 31, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
January 1, 2021 – January 31, 2021
Resolved
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
May 1, 2020 – June 18, 2020
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2017 – March 28, 2018
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 2016 – September 22, 2016
Resolved
Sample Siting Plan Errors (RTCR)
—
Revised Total Coliform Rule
April 1, 2016 – March 28, 2018
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2015 – July 31, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
LASSO
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Endrin
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Diquat
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Endothall
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Simazine
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Picloram
January 1, 2008 – September 29, 2009
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2008 – September 29, 2009
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2006 – March 13, 2007
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2005 – March 13, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2004 – October 31, 2004
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
LASSO
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Benzene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Toluene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Styrene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Endrin
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Picloram
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Simazine
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Endothall
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Diquat
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2004 – December 31, 2004
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2004 – December 22, 2005
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
August 1, 2003 – August 31, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2003 – August 31, 2003
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2001 – December 31, 2001
Resolved

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

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 2025 – September 30, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Archived
July 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	Chlorine	—	Archived
April 1, 2025	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Unaddressed
February 1, 2025 – February 12, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2025 – February 12, 2025	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2024 – December 10, 2024	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2024 – December 10, 2024	Monitoring, Regular	Nitrite	—	Resolved
January 1, 2022 – December 31, 2024	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2022 – December 31, 2024	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2021 – January 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
May 1, 2020 – June 18, 2020	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2017 – March 28, 2018	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2016 – September 22, 2016	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 2016 – March 28, 2018	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2015 – July 31, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
December 1, 2012 – December 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	LASSO	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Endrin	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Diquat	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Endothall	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Simazine	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Picloram	—	Resolved
January 1, 2008 – September 29, 2009	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2006 – March 13, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2005 – March 13, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2004 – October 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	LASSO	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Benzene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Toluene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Styrene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Endrin	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Picloram	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Simazine	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Endothall	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Diquat	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2004 – December 22, 2005	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Toxaphene	—	Resolved
August 1, 2003 – August 31, 2003	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
August 1, 2003 – August 31, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
December 1, 2001 – December 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

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

Enforcement actions

December 5, 2025State Formal Notice of Violation issued1 linked violation
August 13, 2025State Compliance achieved1 linked violation
August 13, 2025State Compliance achieved1 linked violation
April 29, 2025State Formal Notice of Violation issued1 linked violation
April 29, 2025State Formal Notice of Violation issued1 linked violation
April 29, 2025State Formal Notice of Violation issued1 linked violation
April 29, 2025State Formal Notice of Violation issued1 linked violation
February 12, 2025State Compliance achieved1 linked violation
February 12, 2025State Compliance achieved1 linked violation
December 10, 2024State Compliance achievedgeneral compliance action — not tied to a specific violation on record
December 10, 2024State Compliance achieved1 linked violation
December 10, 2024State Compliance achieved1 linked violation
February 23, 2021State Compliance achieved1 linked violation
June 18, 2020State Compliance achieved1 linked violation
March 28, 2018State Compliance achieved1 linked violation
March 28, 2018State Compliance achieved1 linked violation
March 5, 2018State Formal Notice of Violation issued1 linked violation
March 5, 2018State Public Notification issued1 linked violation
August 29, 2017State Formal Notice of Violation issued1 linked violation
August 29, 2017State Public Notification issued1 linked violation
February 28, 2017State Formal Notice of Violation issued1 linked violation
February 28, 2017State Public Notification issued1 linked violation
September 22, 2016State Compliance achieved1 linked violation
December 15, 2015State Compliance achieved1 linked violation
December 2, 2015State Formal Notice of Violation issued1 linked violation
December 2, 2015State Public Notification issued1 linked violation
January 14, 2013State Compliance achieved1 linked violation
January 14, 2013State Formal Notice of Violation issued1 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
October 4, 2012State Compliance achieved1 linked violation
October 4, 2012State Compliance achieved1 linked violation
February 10, 2012State Public Notification received1 linked violation
February 10, 2012State Public Notification received1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Public Notification issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
October 28, 2011State Formal Notice of Violation issued1 linked violation
January 25, 2011State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 25, 2011State Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
September 29, 2009State Compliance achieved1 linked violation
August 11, 2008State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
January 1, 2008State Compliance achieved1 linked violation
January 1, 2008State Compliance achieved1 linked violation
January 1, 2008State Compliance achieved1 linked violation
November 20, 2007State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
April 4, 2007State Compliance achieved34 linked violations
March 13, 2007State Compliance achieved2 linked violations
November 9, 2006State Violation/Reminder Notice1 linked violation
May 9, 2006State Compliance achieved21 linked violations
May 9, 2006State Violation/Reminder Notice30 linked violations
May 9, 2006State Formal Notice of Violation issued6 linked violations
December 22, 2005State Compliance achieved1 linked violation
November 15, 2005State Violation/Reminder Notice1 linked violation

Common questions

Is Chuska Community Boarding School BIA required to publish a Consumer Confidence Report?: Yes. Chuska Community Boarding School BIA 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 Chuska Community Boarding School BIA’s next Consumer Confidence Report due?: Chuska Community Boarding School BIA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does Chuska Community Boarding School BIA have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for Chuska Community Boarding School BIA 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

BIA Chuska Community School

5057332700

Tohatchi, NM 87325-0321