Drinking Water Compliance OS

Window Rock, 09

Dzilthnaodithhle Boarding School - BIE 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 EPA Region 9’s official records. Always confirm current status with EPA Region 9 before making decisions based on this information.

System facts

System ID (PWSID)
093534024
System type
Community Water System
Population served
400
Service connections
98
Ownership
federal government
Water source
groundwater (wells)

Violation history

  • Follow-up Or Routine LCR Tap M/R

    —

    Lead and Copper Rule

    July 1, 2025

    Unaddressed

  • Follow-up Or Routine LCR Tap M/R

    —

    Lead and Copper Rule

    January 1, 2025

    Unaddressed

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2024 – December 31, 2024

    Archived

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2024 – December 31, 2024

    Archived

  • Monitoring and Reporting (DBP)

    —

    TTHM

    January 1, 2024 – December 31, 2024

    Archived

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2023 – December 4, 2023

    Resolved

  • Monitoring, Source Water (GWR)

    —

    E. COLI

    May 1, 2020 – September 1, 2020

    Resolved

  • Follow-up Or Routine LCR Tap M/R

    —

    Lead and Copper Rule

    January 1, 2020 – December 19, 2023

    Resolved

  • Monitoring, Routine (IDSE)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2019 – December 31, 2019

    Resolved

  • Monitoring, Routine (IDSE)

    —

    TTHM

    January 1, 2019 – December 31, 2019

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2017 – December 31, 2017

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    February 1, 2016 – February 29, 2016

    Resolved

  • Monitoring, Source Water (GWR)

    —

    E. COLI

    February 1, 2016 – May 20, 2016

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2006 – March 16, 2007

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2005 – March 16, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2004 – December 31, 2004

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2002 – August 1, 2003

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    May 1, 2002 – May 31, 2002

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    January 1, 2002 – January 31, 2002

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2001 – August 1, 2003

    Resolved

  • Monitoring, Regular

    —

    Beryllium, Total

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Antimony, Total

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Selenium

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Barium

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Mercury

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Chromium

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Cadmium

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Arsenic

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Thallium, Total

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 2001 – December 31, 2001

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2000 – August 1, 2003

    Resolved

Unaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

Contact

Bureau of Indian Education

Phone not on record

Window Rock, AZ 86515