Drinking Water Compliance OS

Ft Defiance, NN

Casa Del Eco Mesa NTUA Water System

Current status

No open violations on record as of July 4, 2026.

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)
NN4903074
System type
Community Water System
Population served
211
Service connections
55
Ownership
Native American tribal
Water source
groundwater (wells)

Violation history

  • Sample Siting Plan Errors (RTCR)

    Revised Total Coliform Rule

    April 1, 2016 – March 7, 2025

    Resolved
  • Failure Submit IDSE/Subpart V Plan Rpt

    Stage 2 Disinfectants and Disinfection Byproducts Rule

    October 1, 2013 – February 10, 2025

    Resolved
  • 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
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    LASSO

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    2,3,7,8-TCDD

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Heptachlor

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Heptachlor epoxide

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    2,4-D

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    2,4,5-TP

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Hexachlorocyclopentadiene

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Carbofuran

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Atrazine

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    HEXACHLOROBENZENE

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Benzo(a)pyrene

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Pentachlorophenol

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Endrin

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    BHC-GAMMA

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Methoxychlor

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Toxaphene

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    1,2-DIBROMO-3-CHLOROPROPANE

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Dalapon

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    ETHYLENE DIBROMIDE

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Diquat

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Chlordane

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Endothall

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Glyphosate

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) adipate

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    OXAMYL

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Simazine

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Di(2-ethylhexyl) phthalate

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Picloram

    January 1, 2011 – June 4, 2013

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2011 – June 26, 2013

    Resolved
  • Monitoring, Regular

    Dinoseb

    January 1, 2011 – June 4, 2013

    Resolved
  • Follow-up Or Routine LCR Tap M/R

    Lead and Copper Rule

    January 1, 2010 – October 21, 2011

    Resolved
  • Monitoring, Regular

    Nitrite

    January 1, 2010 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Toluene

    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 – April 13, 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

    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

    Trichloroethylene

    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

    Ethylbenzene

    January 1, 2008 – December 31, 2010

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2008 – December 31, 2010

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Contact

Navajo Tribal Utility Authority

9287296277

Ft Defiance, AZ 86504