Ft Defiance, NN
Lukachukai NTUA Water System
Consumer Confidence Report status
Lukachukai 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 1 item for Lukachukai NTUA 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)
- NN0403047
- System type
- Community Water System
- Population served
- 1,659
- Service connections
- 485
- Ownership
- Native American tribal
- Water source
- groundwater (wells)
Lukachukai NTUA is among the 22 largest community water systems in Navajo Nation, serving 1,659 people from groundwater.
As of August 1, 2026, its federal record holds 34 entries between 2005 and 2020, of which 1 remains open; none are health-based.
Of the 34, 29 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 volatile organic chemicals, inorganic chemicals, and the Total Coliform Rules.
Violation history
Monitoring, Routine (IDSE)
—TTHM
January 1, 2020 – December 31, 2020
ResolvedMonitoring, Routine (IDSE)
—Total Haloacetic Acids (HAA5)
January 1, 2020 – December 31, 2020
ResolvedSample Siting Plan Errors (RTCR)
—Revised Total Coliform Rule
April 1, 2016 – February 10, 2025
ResolvedFailure Submit IDSE/Subpart V Plan Rpt
—Stage 2 Disinfectants and Disinfection Byproducts Rule
October 1, 2013
UnaddressedMonitoring, Routine Major (TCR)
—Coliform (TCR)
December 1, 2012 – December 31, 2012
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 2012 – November 30, 2012
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
October 1, 2012 – December 31, 2012
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2012 – September 30, 2012
ResolvedMonitoring, Regular
—Arsenic
April 1, 2012 – June 30, 2012
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
April 1, 2012 – June 30, 2012
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2012 – March 31, 2012
ResolvedMonitoring, Regular
—Nitrite
January 1, 2010 – December 31, 2010
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
January 1, 2009 – January 29, 2009
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—Carbon tetrachloride
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—Benzene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—Toluene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—Styrene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—Xylenes, Total
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2005 – December 31, 2010
ResolvedMonitoring, Regular
—Vinyl chloride
January 1, 2005 – December 31, 2010
Resolved
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2020 – December 31, 2020 | Monitoring, Routine (IDSE) | TTHM | — | Resolved |
| January 1, 2020 – December 31, 2020 | Monitoring, Routine (IDSE) | Total Haloacetic Acids (HAA5) | — | Resolved |
| April 1, 2016 – February 10, 2025 | Sample Siting Plan Errors (RTCR) | Revised Total Coliform Rule | — | Resolved |
| October 1, 2013 | Failure Submit IDSE/Subpart V Plan Rpt | Stage 2 Disinfectants and Disinfection Byproducts Rule | — | Unaddressed |
| 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 |
| October 1, 2012 – December 31, 2012 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| July 1, 2012 – September 30, 2012 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| April 1, 2012 – June 30, 2012 | Monitoring, Regular | Arsenic | — | Resolved |
| April 1, 2012 – June 30, 2012 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| January 1, 2012 – March 31, 2012 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| January 1, 2010 – December 31, 2010 | Monitoring, Regular | Nitrite | — | Resolved |
| January 1, 2009 – January 29, 2009 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | Benzene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | Toluene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | Styrene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| January 1, 2005 – December 31, 2010 | Monitoring, Regular | Vinyl chloride | — | Resolved |
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
Enforcement actions
- February 10, 2025State Compliance achieved1 linked violation
- August 28, 2024State Formal Notice of Violation issued1 linked violation
- July 12, 2021State Compliance achieved1 linked violation
- July 12, 2021State Compliance achieved1 linked violation
- March 31, 2021State Public Notification issued1 linked violation
- March 31, 2021State Formal Notice of Violation issued1 linked violation
- March 31, 2021State Formal Notice of Violation issued1 linked violation
- March 31, 2021State Public Notification issued1 linked violation
- August 25, 2017State Public Notification issued1 linked violation
- August 25, 2017State Formal Notice of Violation issued1 linked violation
- April 15, 2014State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
- February 10, 2014State Public Notification received1 linked violation
- February 10, 2014State Public Notification received1 linked violation
- February 10, 2014State Public Notification received1 linked violation
- February 10, 2014State Public Notification received1 linked violation
- February 10, 2014State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
- February 10, 2014State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
- February 10, 2014State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
- February 4, 2014State Compliance achieved1 linked violation
- February 4, 2014State Compliance achieved1 linked violation
- February 4, 2014State Compliance achieved1 linked violation
- February 4, 2014State Compliance achieved1 linked violation
- May 16, 2013State Compliance achieved1 linked violation
- January 11, 2013State Compliance achieved1 linked violation
- January 11, 2013State Formal Notice of Violation issued1 linked violation
- January 9, 2013State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
- January 9, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- January 9, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- January 9, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- January 9, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- January 9, 2013State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
- January 9, 2013State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
- January 9, 2013State Administrative/Compliance Order without penalty issued1 linked violation
- December 11, 2012State Compliance achieved1 linked violation
- November 20, 2012State 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
- August 21, 2012State Variance/Exemption issued1 linked violation
- August 21, 2012State Variance/Exemption issued1 linked violation
- August 21, 2012State Variance/Exemption issued1 linked violation
- June 6, 2012State Formal Notice of Violation issued1 linked violation
- June 6, 2012State Formal Notice of Violation issued1 linked violation
- June 6, 2012State Formal Notice of Violation issued1 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
- June 12, 2009State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- June 4, 2009State Formal Notice of Violation issued1 linked violation
- June 4, 2009State Public Notification requested1 linked violation
- January 29, 2009State Compliance achieved1 linked violation
- March 25, 2008Federal Variance/Exemption issuedgeneral compliance action — not tied to a specific violation on record
- December 5, 2000State Compliance achievedgeneral compliance action — not tied to a specific violation on record
Common questions
Is Lukachukai NTUA required to publish a Consumer Confidence Report?
- Yes. Lukachukai 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 Lukachukai NTUA’s next Consumer Confidence Report due?
- Lukachukai NTUA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does Lukachukai NTUA have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for Lukachukai NTUA 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
Navajo Tribal Utility Authority
9287296277
Ft Defiance, AZ 86504