Tohatchi, NN
Chuska Community Boarding School BIA 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)
- NN3536003
- System type
- Community Water System
- Population served
- 348
- Service connections
- 87
- Ownership
- federal government
- Water source
- groundwater (wells)
Violation history
Monitoring, Routine (RTCR)
—Revised Total Coliform Rule
September 1, 2025 – September 30, 2025
ArchivedReport Sample Result/Fail Monitor (RTCR)
—Revised Total Coliform Rule
April 1, 2025
UnaddressedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
February 1, 2025 – February 12, 2025
ResolvedMonitoring, Regular
—Nitrate
January 1, 2024 – December 10, 2024
ResolvedMonitoring, Regular
—Nitrite
January 1, 2024 – December 10, 2024
ResolvedMonitoring, Routine (IDSE)
—Total Haloacetic Acids (HAA5)
January 1, 2022 – December 31, 2024
ResolvedMonitoring, Routine (IDSE)
—TTHM
January 1, 2022 – December 31, 2024
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
January 1, 2021 – January 31, 2021
ResolvedReport Sample Result/Fail Monitor (RTCR)
—Revised Total Coliform Rule
May 1, 2020 – June 18, 2020
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 2017 – March 28, 2018
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
July 1, 2016 – September 22, 2016
ResolvedSample Siting Plan Errors (RTCR)
—Revised Total Coliform Rule
April 1, 2016 – March 28, 2018
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
July 1, 2015 – July 31, 2015
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
December 1, 2012 – December 31, 2012
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Atrazine
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Toxaphene
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—LASSO
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—OXAMYL
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—2,3,7,8-TCDD
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Heptachlor
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Simazine
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Fluoride
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Heptachlor epoxide
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Dalapon
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—2,4-D
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—2,4,5-TP
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Benzo(a)pyrene
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Diquat
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Pentachlorophenol
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Dinoseb
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Hexachlorocyclopentadiene
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Endothall
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Methoxychlor
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Glyphosate
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Carbofuran
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Chlordane
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Endrin
January 1, 2008 – September 29, 2009
ResolvedMonitoring, Regular
—Picloram
January 1, 2008 – September 29, 2009
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2006 – March 13, 2007
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2005 – March 13, 2007
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
October 1, 2004 – October 31, 2004
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Benzene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Toluene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Styrene
January 1, 2004 – December 31, 2004
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 2004 – December 22, 2005
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Endrin
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Methoxychlor
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Toxaphene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Dalapon
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Diquat
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Endothall
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Glyphosate
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—OXAMYL
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Simazine
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Picloram
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Dinoseb
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Hexachlorocyclopentadiene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Aldicarb sulfoxide
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Aldicarb sulfone
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Carbofuran
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Aldicarb
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Atrazine
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—LASSO
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—2,3,7,8-TCDD
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Heptachlor
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Heptachlor epoxide
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—2,4-D
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—2,4,5-TP
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Benzo(a)pyrene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Pentachlorophenol
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Xylenes, Total
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Chlordane
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Vinyl chloride
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Carbon tetrachloride
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
August 1, 2003 – August 31, 2003
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
August 1, 2003 – August 31, 2003
ResolvedMonitoring, 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 |
| 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, 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 | Di(2-ethylhexyl) adipate | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Toxaphene | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | LASSO | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | OXAMYL | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 2,3,7,8-TCDD | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Heptachlor | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Simazine | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Fluoride | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Dalapon | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | 2,4-D | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Diquat | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Dinoseb | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Endothall | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Methoxychlor | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Glyphosate | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Carbofuran | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Chlordane | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Endrin | — | Resolved |
| January 1, 2008 – September 29, 2009 | Monitoring, Regular | Picloram | — | 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 | 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 22, 2005 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Endrin | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Methoxychlor | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Toxaphene | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Dalapon | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Diquat | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Endothall | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Glyphosate | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | OXAMYL | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Simazine | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Picloram | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Dinoseb | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Aldicarb sulfoxide | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Aldicarb sulfone | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Carbofuran | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Aldicarb | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | LASSO | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | 2,3,7,8-TCDD | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Heptachlor | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | 2,4-D | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Pentachlorophenol | — | 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 | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | 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 | 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 | 1,1,2-Trichloroethane | — | 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
- December 10, 2024State 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
- 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 Public Notification issued1 linked violation
- February 28, 2017State Formal Notice of Violation 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 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
- 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
Contact
BIA Chuska Community School
5057332700
Tohatchi, NM 87325-0321