Drinking Water Compliance OS

Ft Defiance, NN

Casamero Cup NTUA Water System

Current status

2 items on record are 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)
NN3503060
System type
Community Water System
Population served
48
Service connections
14
Ownership
Native American tribal
Water source
groundwater (wells)

Violation history

  • Monitoring, Routine (IDSE)

    TTHM

    July 1, 2016 – August 1, 2016

    Resolved
  • Monitoring, Routine (IDSE)

    Total Haloacetic Acids (HAA5)

    July 1, 2016 – August 1, 2016

    Resolved
  • Sample Siting Plan Errors (RTCR)

    Revised Total Coliform Rule

    April 1, 2016

    Unaddressed
  • Monitoring, Routine (IDSE)

    Total Haloacetic Acids (HAA5)

    April 1, 2016 – June 30, 2016

    Resolved
  • Monitoring, Routine (IDSE)

    TTHM

    April 1, 2016 – June 30, 2016

    Resolved
  • Monitoring, Routine (IDSE)

    TTHM

    January 1, 2016 – March 28, 2016

    Resolved
  • Monitoring, Routine (IDSE)

    Total Haloacetic Acids (HAA5)

    January 1, 2016 – March 28, 2016

    Resolved
  • Monitoring, Routine (IDSE)

    TTHM

    April 1, 2015 – June 24, 2015

    Resolved
  • Monitoring, Routine (IDSE)

    Total Haloacetic Acids (HAA5)

    April 1, 2015 – June 24, 2015

    Resolved
  • Monitoring, Routine (IDSE)

    Total Haloacetic Acids (HAA5)

    October 1, 2014 – December 31, 2014

    Resolved
  • Monitoring, Routine (IDSE)

    TTHM

    October 1, 2014 – December 31, 2014

    Resolved
  • Monitoring, Routine (IDSE)

    TTHM

    July 1, 2014 – September 30, 2014

    Resolved
  • Monitoring, Routine (IDSE)

    Total Haloacetic Acids (HAA5)

    July 1, 2014 – September 30, 2014

    Resolved
  • Monitoring, Routine (IDSE)

    TTHM

    April 1, 2014 – June 30, 2014

    Resolved
  • Monitoring, Routine (IDSE)

    Total Haloacetic Acids (HAA5)

    April 1, 2014 – June 30, 2014

    Resolved
  • Failure Submit IDSE/Subpart V Plan Rpt

    Stage 2 Disinfectants and Disinfection Byproducts Rule

    October 1, 2013

    Unaddressed
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    December 1, 2012 – December 31, 2012

    Resolved
  • Monitoring, Routine Major (TCR)

    Coliform (TCR)

    November 1, 2012 – November 30, 2012

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    TTHM

    October 1, 2012 – December 31, 2012

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Antimony, Total

    October 1, 2010 – December 31, 2010

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    Thallium, Total

    October 1, 2010 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Nitrite

    January 1, 2010 – December 31, 2010

    Resolved
  • Monitoring and Reporting (DBP)

    Total Haloacetic Acids (HAA5)

    January 1, 2010 – December 31, 2010

    Resolved
  • Monitoring and Reporting (DBP)

    TTHM

    January 1, 2010 – December 31, 2010

    Resolved
  • Monitoring, Regular

    HEXACHLOROBENZENE

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Benzo(a)pyrene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    1,2-DIBROMO-3-CHLOROPROPANE

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    ETHYLENE DIBROMIDE

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Chlordane

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Endrin

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    BHC-GAMMA

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Methoxychlor

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Toxaphene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Dalapon

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Diquat

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Endothall

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Glyphosate

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) adipate

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    OXAMYL

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Simazine

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) phthalate

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Picloram

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Dinoseb

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Hexachlorocyclopentadiene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Carbofuran

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Atrazine

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    LASSO

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    2,3,7,8-TCDD

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Heptachlor

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    2,4-D

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    2,4,5-TP

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Routine Minor (TCR)

    Coliform (TCR)

    August 1, 2007 – August 31, 2007

    Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Enforcement actions

Contact

Navajo Tribal Utility Authority

9287296277

Ft Defiance, AZ 86504