Ft Defiance, NN
Toadlena NTUA Water System
Consumer Confidence Report status
Toadlena NTUA 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 2 items for Toadlena NTUA that are 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)
- NN3503028
- System type
- Community Water System
- Population served
- 903
- Service connections
- 264
- Ownership
- Native American tribal
- Water source
- groundwater (wells)
Toadlena NTUA is one of 77 community water systems in Navajo Nation in the 501 to 3,300 people size category, serving 903 people from groundwater.
As of August 1, 2026, its federal record holds 142 entries between 2003 and 2025, of which 2 remain open; none are health-based.
Of the 142, 79 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 inorganic chemicals, synthetic organic chemicals, and volatile organic chemicals.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2025 – September 30, 2025
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
April 1, 2025
UnaddressedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2025 – June 30, 2025
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2025 – March 31, 2025
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2024 – December 31, 2024
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
October 1, 2024
UnaddressedPublic Notification Violation for NPDWR Violation
—Public Notice
July 1, 2024 – August 6, 2024
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2024 – September 30, 2024
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
April 1, 2024 – April 11, 2024
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2024 – June 30, 2024
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2024 – March 31, 2024
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2023 – December 31, 2023
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2023 – September 30, 2023
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2023 – June 30, 2023
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2023 – March 31, 2023
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2022 – December 31, 2022
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2022 – September 30, 2022
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2022 – June 30, 2022
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
April 1, 2022 – April 7, 2022
ResolvedMonitoring, Regular
—Arsenic
January 1, 2022 – March 31, 2022
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2022 – March 31, 2022
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2021 – December 31, 2021
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2021 – September 30, 2021
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2021 – June 30, 2021
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
April 1, 2021 – July 14, 2021
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2021 – March 31, 2021
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2020 – December 31, 2020
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2020 – September 30, 2020
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
April 1, 2020 – April 3, 2020
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2020 – June 30, 2020
ArchivedMonitoring, Routine (IDSE)
—Total Haloacetic Acids (HAA5)
January 1, 2020 – December 31, 2020
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2020 – March 31, 2020
ArchivedMonitoring, Routine (IDSE)
—TTHM
January 1, 2020 – December 31, 2020
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2019 – December 31, 2019
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2019 – September 30, 2019
ArchivedMonitoring, Regular
—Arsenic
July 1, 2019 – September 30, 2019
ResolvedMonitoring, Regular
—Arsenic
April 1, 2019 – June 30, 2019
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2019 – June 30, 2019
ArchivedMonitoring, Regular
—Arsenic
January 1, 2019 – February 12, 2019
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2019 – March 31, 2019
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2018 – December 31, 2018
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
October 1, 2018 – December 17, 2018
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2018 – September 30, 2018
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2018 – June 30, 2018
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2018 – March 31, 2018
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2017 – December 31, 2017
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2017 – September 30, 2017
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2017 – June 30, 2017
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2017 – March 31, 2017
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
January 1, 2017 – May 19, 2017
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2016 – December 31, 2016
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2016 – September 30, 2016
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2016 – June 30, 2016
ResolvedPublic Notification Violation for NPDWR Violation
—Public Notice
April 1, 2016 – October 8, 2016
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2016 – March 31, 2016
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2015 – December 31, 2015
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2015 – September 30, 2015
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
July 1, 2015 – March 20, 2016
ResolvedMonitoring, Regular
—Arsenic
April 1, 2015 – November 4, 2013
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2015 – March 31, 2015
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2014 – December 31, 2014
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2014 – September 30, 2014
ArchivedMonitoring, Regular
—Arsenic
July 1, 2014 – August 4, 2014
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2014 – June 30, 2014
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
January 1, 2014 – October 1, 2014
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2014 – March 31, 2014
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2013 – December 31, 2013
ResolvedFailure Submit IDSE/Subpart V Plan Rpt
—Stage 2 Disinfectants and Disinfection Byproducts Rule
October 1, 2013 – February 23, 2023
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2013 – September 30, 2013
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2013 – June 30, 2013
ArchivedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2013 – March 31, 2013
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
December 1, 2012 – December 31, 2012
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 2012 – November 30, 2012
ResolvedMonitoring, Regular
—CYANIDE
January 1, 2011 – April 12, 2011
ResolvedMonitoring, Regular
—Fluoride
January 1, 2011 – December 31, 2013
ResolvedMonitoring, Regular
—Nitrite
January 1, 2010 – December 31, 2010
ResolvedMonitoring, Regular
—Endothall
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Glyphosate
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—OXAMYL
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Simazine
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Picloram
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Dinoseb
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Hexachlorocyclopentadiene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Carbofuran
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Atrazine
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—LASSO
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—2,3,7,8-TCDD
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Heptachlor
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Heptachlor epoxide
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—2,4-D
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—2,4,5-TP
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Benzo(a)pyrene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Pentachlorophenol
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Xylenes, Total
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Chlordane
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Vinyl chloride
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Carbon tetrachloride
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Benzene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Toluene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Styrene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Barium
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Toxaphene
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Dalapon
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Diquat
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Fluoride
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—CYANIDE
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Chromium
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Cadmium
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Methoxychlor
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Endrin
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Thallium, Total
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Beryllium, Total
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Antimony, Total
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Selenium
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Regular
—Mercury
January 1, 2008 – December 31, 2010
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
July 1, 2004 – July 15, 2004
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
July 1, 2004 – July 15, 2004
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
May 1, 2003 – May 31, 2003
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
May 1, 2003 – May 31, 2003
Archived
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 |
|---|---|---|---|---|
| July 1, 2025 – September 30, 2025 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2025 | Public Notification Violation for NPDWR Violation | Public Notice | — | Unaddressed |
| April 1, 2025 – June 30, 2025 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2025 – March 31, 2025 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2024 – December 31, 2024 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2024 | Public Notification Violation for NPDWR Violation | Public Notice | — | Unaddressed |
| July 1, 2024 – August 6, 2024 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| July 1, 2024 – September 30, 2024 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2024 – April 11, 2024 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| April 1, 2024 – June 30, 2024 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2024 – March 31, 2024 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2023 – December 31, 2023 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2023 – September 30, 2023 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2023 – June 30, 2023 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2023 – March 31, 2023 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2022 – December 31, 2022 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2022 – September 30, 2022 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2022 – June 30, 2022 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2022 – April 7, 2022 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| January 1, 2022 – March 31, 2022 | Monitoring, Regular | Arsenic | — | Resolved |
| January 1, 2022 – March 31, 2022 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2021 – December 31, 2021 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2021 – September 30, 2021 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2021 – June 30, 2021 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2021 – July 14, 2021 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| January 1, 2021 – March 31, 2021 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2020 – December 31, 2020 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2020 – September 30, 2020 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2020 – April 3, 2020 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| April 1, 2020 – June 30, 2020 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2020 – December 31, 2020 | Monitoring, Routine (IDSE) | Total Haloacetic Acids (HAA5) | — | Resolved |
| January 1, 2020 – March 31, 2020 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2020 – December 31, 2020 | Monitoring, Routine (IDSE) | TTHM | — | Resolved |
| October 1, 2019 – December 31, 2019 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2019 – September 30, 2019 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2019 – September 30, 2019 | Monitoring, Regular | Arsenic | — | Resolved |
| April 1, 2019 – June 30, 2019 | Monitoring, Regular | Arsenic | — | Resolved |
| April 1, 2019 – June 30, 2019 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2019 – February 12, 2019 | Monitoring, Regular | Arsenic | — | Resolved |
| January 1, 2019 – March 31, 2019 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2018 – December 31, 2018 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2018 – December 17, 2018 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| July 1, 2018 – September 30, 2018 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2018 – June 30, 2018 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2018 – March 31, 2018 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2017 – December 31, 2017 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2017 – September 30, 2017 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2017 – June 30, 2017 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2017 – March 31, 2017 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2017 – May 19, 2017 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| October 1, 2016 – December 31, 2016 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2016 – September 30, 2016 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| April 1, 2016 – June 30, 2016 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| April 1, 2016 – October 8, 2016 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| January 1, 2016 – March 31, 2016 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| October 1, 2015 – December 31, 2015 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2015 – September 30, 2015 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2015 – March 20, 2016 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| April 1, 2015 – November 4, 2013 | Monitoring, Regular | Arsenic | — | Resolved |
| January 1, 2015 – March 31, 2015 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2014 – December 31, 2014 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2014 – September 30, 2014 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| July 1, 2014 – August 4, 2014 | Monitoring, Regular | Arsenic | — | Resolved |
| April 1, 2014 – June 30, 2014 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2014 – October 1, 2014 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| January 1, 2014 – March 31, 2014 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| October 1, 2013 – December 31, 2013 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| October 1, 2013 – February 23, 2023 | Failure Submit IDSE/Subpart V Plan Rpt | Stage 2 Disinfectants and Disinfection Byproducts Rule | — | Resolved |
| July 1, 2013 – September 30, 2013 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| April 1, 2013 – June 30, 2013 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| January 1, 2013 – March 31, 2013 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Archived |
| 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 – April 12, 2011 | Monitoring, Regular | CYANIDE | — | Resolved |
| January 1, 2011 – December 31, 2013 | Monitoring, Regular | Fluoride | — | Resolved |
| January 1, 2010 – December 31, 2010 | Monitoring, Regular | Nitrite | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Endothall | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Glyphosate | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | OXAMYL | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Simazine | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Picloram | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Dinoseb | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Carbofuran | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | LASSO | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 2,3,7,8-TCDD | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Heptachlor | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 2,4-D | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Chlordane | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Benzene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Toluene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Styrene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Barium | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Toxaphene | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Dalapon | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Diquat | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Fluoride | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | CYANIDE | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Chromium | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Cadmium | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Methoxychlor | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Endrin | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Thallium, Total | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Beryllium, Total | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Antimony, Total | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Selenium | — | Resolved |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Mercury | — | Resolved |
| July 1, 2004 – July 15, 2004 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 2004 – July 15, 2004 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| January 1, 2004 – December 31, 2004 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| May 1, 2003 – May 31, 2003 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| May 1, 2003 – May 31, 2003 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Archived |
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
- April 30, 2025State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- April 30, 2025State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- August 6, 2024State Compliance achieved1 linked violation
- April 11, 2024State Compliance achieved1 linked violation
- February 23, 2023State Compliance achieved1 linked violation
- May 18, 2022State Compliance achieved1 linked violation
- April 7, 2022State Compliance achieved1 linked violation
- July 14, 2021State Compliance achieved1 linked violation
- July 13, 2021State Compliance achieved1 linked violation
- July 13, 2021State Compliance achieved1 linked violation
- March 31, 2021State Formal Notice of Violation issued1 linked violation
- March 31, 2021State Public Notification issued1 linked violation
- March 31, 2021State Formal Notice of Violation issued1 linked violation
- March 31, 2021State Public Notification issued1 linked violation
- March 31, 2021State Formal Notice of Violation issued1 linked violation
- April 3, 2020State Compliance achieved1 linked violation
- February 4, 2020State Compliance achieved1 linked violation
- December 4, 2019State Formal Notice of Violation issued1 linked violation
- August 6, 2019State Compliance achieved1 linked violation
- February 12, 2019State Compliance achieved1 linked violation
- December 17, 2018State Compliance achieved1 linked violation
- December 19, 2017State Public Notification received1 linked violation
- August 28, 2017State Formal Notice of Violation issued1 linked violation
- August 28, 2017State Public Notification issued1 linked violation
- May 19, 2017State Compliance achieved1 linked violation
- February 27, 2017State Formal Notice of Violation issued1 linked violation
- October 8, 2016State Compliance achieved1 linked violation
- August 2, 2016State Compliance achieved1 linked violation
- August 2, 2016State Compliance achieved1 linked violation
- March 20, 2016State Compliance achieved1 linked violation
- March 8, 2016State Formal Notice of Violation issued1 linked violation
- November 17, 2014State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- November 17, 2014State Public Notification requested1 linked violation
- November 17, 2014State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- November 17, 2014State Formal Notice of Violation issued1 linked violation
- October 1, 2014State Compliance achieved1 linked violation
- October 1, 2014State Compliance achieved1 linked violation
- October 1, 2014State Compliance achieved1 linked violation
- October 1, 2014State Compliance achieved1 linked violation
- August 4, 2014State Compliance achieved1 linked violation
- May 22, 2014State Compliance Meeting conducted1 linked violation
- May 15, 2014State Public Notification received1 linked violation
- May 15, 2014State Public Notification received1 linked violation
- April 14, 2014State Public Notification issued1 linked violation
- April 14, 2014State Formal Notice of Violation issued1 linked violation
- March 25, 2014State Public Notification received1 linked violation
- November 4, 2013State Compliance achieved1 linked violation
- October 28, 2013State Bilateral Compliance Agreement signed1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- September 23, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- July 17, 2013State 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
- August 21, 2012State Variance/Exemption issuedgeneral compliance action — not tied to a specific violation on record
- August 21, 2012State Variance/Exemption issuedgeneral compliance action — not tied to a specific violation on record
- June 6, 2012State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
- June 6, 2012State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- June 6, 2012State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- February 21, 2012State Compliance achieved1 linked violation
- October 21, 2011State Compliance achieved1 linked violation
- May 5, 2011State Variance/Exemption issuedgeneral compliance action — not tied to a specific violation on record
- April 12, 2011State Compliance achieved1 linked violation
- March 25, 2008Federal Variance/Exemption issuedgeneral compliance action — not tied to a specific violation on record
- January 1, 2008State Compliance achieved1 linked violation
- March 23, 2007State Formal Notice of Violation issued3 linked violations
- March 20, 2007State Compliance achieved1 linked violation
- July 15, 2004State Compliance achieved2 linked violations
- December 5, 2000State Compliance achievedgeneral compliance action — not tied to a specific violation on record
Common questions
Is Toadlena NTUA required to publish a Consumer Confidence Report?
- Yes. Toadlena NTUA 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 Toadlena NTUA’s next Consumer Confidence Report due?
- Toadlena NTUA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does Toadlena NTUA have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 2 items for Toadlena NTUA that are 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
Navajo Tribal Utility Authority
9287296277
Ft Defiance, AZ 86504