Keams Canyon, 09

Hopi High School - BIA Water System

Current status

3 open health-based violations on record as of July 4, 2026, alongside 9 other open item(s). See the violation history below for contaminant and status details.

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): 090400395
System type: Community Water System
Population served: 1,005
Service connections: 58
Ownership: federal government
Water source: groundwater (wells)

Violation history

Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
October 21, 2025
Unaddressed
Monitoring, Regular
—
Arsenic
October 1, 2025 – December 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
October 1, 2025 – December 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Fluoride
October 1, 2025 – December 31, 2025
Archived
Monitoring, Regular
—
Arsenic
July 1, 2025 – September 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
July 1, 2025 – September 30, 2025
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
July 1, 2025
Unaddressed
Monitoring, Regular
—
Arsenic
July 1, 2025 – September 1, 2025
Archived
Monitoring, Regular
—
Arsenic
April 1, 2025 – June 30, 2025
Archived
Monitoring, Regular
—
Fluoride
April 1, 2025 – June 30, 2025
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
February 1, 2025
Unaddressed
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
February 1, 2025 – February 28, 2025
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2025 – March 31, 2025
Archived
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2025 – March 31, 2025
Archived
Monitoring, Regular
—
Nitrate
January 1, 2025 – December 31, 2025
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
January 1, 2025
Unaddressed
Notification, Known or Potential LSL
—
LEAD AND COPPER RULE REVISIONS
November 16, 2024
Unaddressed
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
Monitoring, Regular
—
Arsenic
October 1, 2024 – December 31, 2024
Archived
Monitoring, Regular
—
Fluoride
October 1, 2024 – December 31, 2024
Archived
Monitoring, Regular
—
Fluoride
April 1, 2024 – June 30, 2024
Archived
Monitoring, Regular
—
Nitrate
January 1, 2024 – December 31, 2024
Archived
Monitoring, Regular
—
Fluoride
October 1, 2023 – December 31, 2023
Archived
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2023 – December 31, 2023
Resolved
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
August 1, 2023 – September 14, 2023
Resolved
Monitoring, Regular
—
Fluoride
July 1, 2023 – September 30, 2023
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
July 1, 2023 – July 31, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2023 – September 30, 2023
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
July 1, 2023
Unaddressed
Public Notification Violation for NPDWR Violation
—
Public Notice
July 1, 2023
Unaddressed
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2023 – August 2, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2023 – June 30, 2023
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
June 1, 2023 – October 27, 2022
Resolved
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
May 1, 2023 – June 20, 2023
Resolved
Monitoring, Regular
—
Fluoride
April 1, 2023 – June 30, 2023
Archived
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2023 – June 30, 2023
Resolved
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
April 1, 2023 – June 20, 2023
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2023 – June 30, 2023
Archived
Public Notification Violation for NPDWR Violation
—
Public Notice
March 1, 2023
Unaddressed
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
March 1, 2023 – June 20, 2023
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
January 14, 2023
Unaddressed
Monitoring, Regular
—
Mercury
January 1, 2023 – December 31, 2025
Archived
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2023 – December 31, 2023
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2023 – September 18, 2024
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Barium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Cadmium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Glyphosate
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Chromium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
CYANIDE
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Thallium, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Antimony, Total
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Selenium
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Fluoride
January 1, 2023 – March 31, 2023
Archived
Monitoring, Regular
—
Nitrate
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Regular
—
Fluoride
October 1, 2022 – December 31, 2022
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2022 – September 30, 2022
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 1, 2022
Unaddressed
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2022 – September 30, 2022
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 1, 2022
Unaddressed
Monitoring, Regular
—
Fluoride
April 1, 2022 – June 30, 2022
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2022 – September 18, 2024
Resolved
Monitoring, Routine (IDSE)
—
Total Haloacetic Acids (HAA5)
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Routine (IDSE)
—
TTHM
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2022 – March 31, 2022
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2022 – March 1, 2022
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2021 – December 31, 2021
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2021 – September 14, 2021
Resolved
Monitoring, Regular
—
Arsenic
July 1, 2021 – September 30, 2021
Resolved
Monitoring, Regular
—
Fluoride
July 1, 2021 – September 30, 2021
Resolved
Monitoring, Regular
—
Fluoride
April 1, 2021 – June 30, 2021
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2021 – June 30, 2021
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2021 – June 30, 2021
Resolved
Monitoring, Regular
—
Fluoride
October 1, 2020 – December 31, 2020
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2020 – October 19, 2021
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
October 1, 2019 – November 7, 2019
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2019 – December 31, 2019
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
November 14, 2018 – April 24, 2019
Resolved
Monitoring, Regular
—
Arsenic
October 1, 2018 – December 31, 2018
Resolved
Monitoring, Routine (IDSE)
—
TTHM
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2017 – December 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2017 – March 31, 2017
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Barium
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Chromium
January 1, 2017 – December 31, 2019
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2017 – December 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2016 – December 31, 2016
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 1, 2016 – October 15, 2016
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2016 – September 30, 2016
Resolved
Initial, Follow-up, or Routine Source Water M/R
—
Lead and Copper Rule
July 1, 2016 – December 6, 2016
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 1, 2016 – May 11, 2017
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
April 1, 2016 – May 11, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2016 – June 30, 2016
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2016 – September 28, 2016
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
January 1, 2016 – May 11, 2017
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2016 – March 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2015 – September 30, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2015 – August 31, 2015
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 1, 2015 – May 11, 2017
Resolved
Monitoring, Regular
—
Arsenic
July 1, 2015 – September 30, 2015
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2015 – July 31, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2015 – June 30, 2015
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2015 – December 31, 2015
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2015 – January 31, 2015
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 2014 – September 30, 2014
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 2014 – May 31, 2014
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
April 1, 2014 – May 11, 2017
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2014 – April 30, 2014
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2014 – December 13, 2016
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
Benzene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
Toluene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2014 – December 13, 2016
Resolved
Monitoring, Regular
—
Styrene
January 1, 2014 – December 13, 2016
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2014 – December 31, 2014
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2013 – September 30, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2013 – August 31, 2013
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
August 1, 2013 – March 14, 2014
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 1, 2013 – February 5, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Arsenic
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2012 – June 30, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
October 1, 2011 – October 31, 2011
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2011 – September 30, 2011
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
September 1, 2011 – January 30, 2012
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 1, 2011 – January 30, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2011 – August 31, 2011
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 1, 2011 – January 30, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2011 – July 31, 2011
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2010 – December 31, 2010
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
October 1, 2010 – October 31, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2010 – September 30, 2010
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
September 1, 2010 – June 7, 2011
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2010 – August 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2010 – September 30, 2010
Resolved
Monitoring, Regular
—
Arsenic
July 1, 2010 – September 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2010 – June 30, 2010
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2010 – June 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2010 – March 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2009 – December 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2009 – April 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2009 – June 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Combined Uranium
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Arsenic
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Fluoride
October 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Combined Uranium
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Arsenic
July 1, 2008 – September 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
July 1, 2008 – September 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Fluoride
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Combined Uranium
April 1, 2008 – June 30, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2008 – June 30, 2008
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
March 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2008 – March 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2008 – March 31, 2008
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2008 – February 22, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2007 – November 30, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2007 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2007 – September 30, 2007
Resolved
Monitoring, Regular
—
Arsenic
April 1, 2007 – June 30, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2006 – April 30, 2006
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2006 – March 31, 2006
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2006 – December 31, 2006
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2006 – December 31, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Fluoride
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2005 – October 31, 2005
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2005 – September 30, 2005
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 2005 – August 31, 2005
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2005 – July 17, 2007
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 2005 – May 31, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2005 – March 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2005 – December 31, 2005
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2004 – October 31, 2004
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2004 – July 17, 2007
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2004 – December 31, 2004
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2003 – November 30, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2003 – October 31, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2003 – August 31, 2003
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2002 – November 30, 2002
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2002 – October 31, 2002
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2002 – September 30, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2002 – May 31, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2001 – November 30, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2001 – October 31, 2001
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2001 – September 30, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2001 – August 31, 2001
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 2001 – July 31, 2001
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2000 – December 31, 2000
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1996 – December 26, 2001
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1996 – January 27, 1998
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1994 – November 30, 1994
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1993 – March 31, 1993
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 1993 – January 31, 1993
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1992 – June 30, 1992
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1992 – May 31, 1992
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1992 – April 30, 1992
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1992 – March 31, 1992
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 1992 – January 31, 1992
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1991 – November 30, 1991
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

Period	Violation	Contaminant / rule	Health-based	Status
October 21, 2025	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Unaddressed
October 1, 2025 – December 31, 2025	Monitoring, Regular	Arsenic	—	Archived
October 1, 2025 – December 31, 2025	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Archived
October 1, 2025 – December 31, 2025	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2025 – December 31, 2025	Monitoring, Regular	Fluoride	—	Archived
July 1, 2025 – September 30, 2025	Monitoring, Regular	Arsenic	—	Archived
July 1, 2025 – September 30, 2025	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Archived
July 1, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
July 1, 2025 – September 1, 2025	Monitoring, Regular	Arsenic	—	Archived
April 1, 2025 – June 30, 2025	Monitoring, Regular	Arsenic	—	Archived
April 1, 2025 – June 30, 2025	Monitoring, Regular	Fluoride	—	Archived
February 1, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
February 1, 2025 – February 28, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Arsenic	—	Archived
January 1, 2025 – March 31, 2025	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Fluoride	—	Archived
January 1, 2025 – December 31, 2025	Monitoring, Regular	Nitrate	—	Archived
January 1, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
November 16, 2024	Notification, Known or Potential LSL	LEAD AND COPPER RULE REVISIONS	—	Unaddressed
October 17, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Unaddressed
October 1, 2024 – December 31, 2024	Monitoring, Regular	Arsenic	—	Archived
October 1, 2024 – December 31, 2024	Monitoring, Regular	Fluoride	—	Archived
April 1, 2024 – June 30, 2024	Monitoring, Regular	Fluoride	—	Archived
January 1, 2024 – December 31, 2024	Monitoring, Regular	Nitrate	—	Archived
October 1, 2023 – December 31, 2023	Monitoring, Regular	Fluoride	—	Archived
October 1, 2023 – December 31, 2023	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
August 1, 2023 – September 14, 2023	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2023 – September 30, 2023	Monitoring, Regular	Fluoride	—	Archived
July 1, 2023 – July 31, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2023 – September 30, 2023	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
July 1, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
July 1, 2023 – August 2, 2023	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
June 1, 2023 – June 30, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
June 1, 2023 – October 27, 2022	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
May 1, 2023 – June 20, 2023	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2023 – June 30, 2023	Monitoring, Regular	Fluoride	—	Archived
April 1, 2023 – June 30, 2023	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2023 – June 20, 2023	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2023 – June 30, 2023	Monitoring, Regular	Arsenic	—	Archived
March 1, 2023	Public Notification Violation for NPDWR Violation	Public Notice	—	Unaddressed
March 1, 2023 – June 20, 2023	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Resolved
January 14, 2023	Failure To Address Deficiency	Groundwater Rule	Health-based	Unaddressed
January 1, 2023 – December 31, 2025	Monitoring, Regular	Mercury	—	Archived
January 1, 2023 – December 31, 2023	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2023 – September 18, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2023 – December 31, 2025	Monitoring, Regular	Barium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Cadmium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Glyphosate	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Chromium	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	CYANIDE	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Thallium, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2023 – December 31, 2025	Monitoring, Regular	Selenium	—	Archived
January 1, 2023 – March 31, 2023	Monitoring, Regular	Fluoride	—	Archived
January 1, 2023 – December 31, 2023	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2022 – December 31, 2022	Monitoring, Regular	Fluoride	—	Archived
September 1, 2022 – September 30, 2022	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2022	Monitoring, Source Water (GWR)	E. COLI	—	Unaddressed
July 1, 2022 – September 30, 2022	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2022	Monitoring, Source Water (GWR)	E. COLI	—	Unaddressed
April 1, 2022 – June 30, 2022	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2022 – September 18, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Routine (IDSE)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2022 – March 31, 2022	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2022 – March 1, 2022	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2021 – December 31, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2021 – September 14, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2021 – September 30, 2021	Monitoring, Regular	Arsenic	—	Resolved
July 1, 2021 – September 30, 2021	Monitoring, Regular	Fluoride	—	Resolved
April 1, 2021 – June 30, 2021	Monitoring, Regular	Fluoride	—	Resolved
April 1, 2021 – June 30, 2021	Monitoring, Regular	Arsenic	—	Resolved
April 1, 2021 – June 30, 2021	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2020 – December 31, 2020	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2020 – October 19, 2021	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2019 – November 7, 2019	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
September 1, 2019 – September 30, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2019 – December 31, 2019	Monitoring, Regular	Nitrate	—	Resolved
November 14, 2018 – April 24, 2019	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
October 1, 2018 – December 31, 2018	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Routine (IDSE)	TTHM	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2017 – March 31, 2017	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Barium	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Chromium	—	Resolved
January 1, 2017 – December 31, 2019	Monitoring, Regular	Cadmium	—	Resolved
October 1, 2016 – December 31, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
August 1, 2016 – October 15, 2016	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 1, 2016 – September 30, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2016 – December 6, 2016	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	—	Resolved
July 1, 2016 – May 11, 2017	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2016 – May 11, 2017	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2016 – September 28, 2016	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2016 – May 11, 2017	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2016 – March 31, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
September 1, 2015 – September 30, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2015 – August 31, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2015 – May 11, 2017	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 1, 2015 – September 30, 2015	Monitoring, Regular	Arsenic	—	Resolved
July 1, 2015 – July 31, 2015	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2015 – June 30, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2015 – December 31, 2015	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2015 – January 31, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2014 – September 30, 2014	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
May 1, 2014 – May 31, 2014	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2014 – May 11, 2017	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2014 – April 30, 2014	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	Benzene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	Toluene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2014 – December 13, 2016	Monitoring, Regular	Styrene	—	Resolved
January 1, 2014 – December 31, 2014	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
September 1, 2013 – September 30, 2013	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2013 – August 31, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2013 – March 14, 2014	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
August 1, 2013 – February 5, 2014	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
September 1, 2012 – September 30, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Arsenic	—	Resolved
June 1, 2012 – June 30, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2011 – October 31, 2011	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2011 – January 30, 2012	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
August 1, 2011 – January 30, 2012	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
August 1, 2011 – August 31, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2011 – January 30, 2012	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 1, 2011 – July 31, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2011 – September 30, 2011	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2010 – October 31, 2010	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2010 – June 7, 2011	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
August 1, 2010 – August 31, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2010 – September 30, 2010	Monitoring, Regular	Arsenic	—	Resolved
April 1, 2010 – June 30, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2010 – June 30, 2010	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2010 – March 31, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2009 – April 30, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Combined Uranium	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Arsenic	—	Resolved
October 1, 2008 – December 31, 2008	Monitoring, Regular	Fluoride	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Combined Uranium	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Arsenic	—	Resolved
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Fluoride	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Arsenic	—	Resolved
April 1, 2008 – June 30, 2008	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2008 – June 30, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
March 1, 2008 – March 31, 2008	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2008 – March 31, 2008	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2008 – February 22, 2012	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
November 1, 2007 – November 30, 2007	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Resolved
October 1, 2007 – December 31, 2007	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
September 1, 2007 – September 30, 2007	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2007 – June 30, 2007	Monitoring, Regular	Arsenic	—	Resolved
April 1, 2006 – April 30, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2006 – March 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2006 – December 31, 2006	Maximum Contaminant Level Violation, Average	Fluoride	Health-based	Resolved
October 1, 2005 – October 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2005 – September 30, 2005	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2005 – August 31, 2005	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2005 – July 17, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
May 1, 2005 – May 31, 2005	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
March 1, 2005 – March 31, 2005	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2004 – October 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2004 – July 17, 2007	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
November 1, 2003 – November 30, 2003	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2003 – October 31, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2003 – August 31, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	Nitrate	—	Resolved
November 1, 2002 – November 30, 2002	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 2002 – October 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 2002 – September 30, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 2002 – May 31, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2001 – November 30, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2001 – October 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2001 – September 30, 2001	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2001 – August 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2001 – July 31, 2001	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1996 – December 26, 2001	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1996 – January 27, 1998	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
November 1, 1994 – November 30, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 1993 – March 31, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1993 – January 31, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 1992 – June 30, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 1992 – May 31, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 1992 – April 30, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 1992 – March 31, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1992 – January 31, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 1991 – November 30, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	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

December 2, 2025Federal Violation/Reminder Notice1 linked violation
September 16, 2025Federal Violation/Reminder Notice1 linked violation
September 16, 2025Federal Violation/Reminder Notice1 linked violation
September 3, 2025Federal Compliance achieved3 linked violations
June 11, 2025Federal Violation/Reminder Notice1 linked violation
June 11, 2025Federal Violation/Reminder Notice1 linked violation
April 3, 2025Federal Violation/Reminder Notice1 linked violation
April 1, 2025Federal Violation/Reminder Notice1 linked violation
March 11, 2025Federal Compliance achieved1 linked violation
September 18, 2024Federal Compliance achieved1 linked violation
September 18, 2024Federal Compliance achieved1 linked violation
September 10, 2024Federal Compliance achieved4 linked violations
February 6, 2024Federal Compliance achieved1 linked violation
September 14, 2023Federal Compliance achieved1 linked violation
August 2, 2023Federal Compliance achieved1 linked violation
August 2, 2023Federal Compliance achieved2 linked violations
June 20, 2023Federal Compliance achieved1 linked violation
June 20, 2023Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
June 20, 2023Federal Compliance achieved1 linked violation
June 20, 2023Federal Compliance achieved1 linked violation
October 27, 2022Federal Compliance achieved1 linked violation
October 4, 2022Federal Compliance achieved2 linked violations
August 16, 2022Federal Compliance achieved2 linked violations
March 1, 2022Federal Compliance achieved1 linked violation
January 4, 2022Federal Compliance achieved1 linked violation
November 23, 2021Federal Compliance achieved5 linked violations
October 19, 2021Federal Compliance achieved1 linked violation
September 14, 2021Federal Compliance achieved1 linked violation
September 14, 2021Federal Compliance achieved1 linked violation
July 28, 2020Federal Compliance achieved6 linked violations
December 13, 2019Federal Compliance achieved1 linked violation
November 7, 2019Federal Compliance achieved1 linked violation
May 7, 2019Federal Compliance achieved1 linked violation
April 24, 2019Federal Compliance achieved1 linked violation
March 27, 2019Federal Compliance achieved1 linked violation
June 6, 2017Federal Compliance achieved1 linked violation
June 6, 2017Federal Compliance achieved1 linked violation
June 6, 2017Federal Compliance achieved1 linked violation
May 11, 2017Federal Compliance achieved1 linked violation
May 11, 2017Federal Compliance achieved1 linked violation
May 11, 2017Federal Compliance achieved1 linked violation
May 11, 2017Federal Compliance achieved1 linked violation
May 11, 2017Federal Compliance achieved1 linked violation
April 6, 2017Federal Compliance achieved1 linked violation
April 6, 2017Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 13, 2016Federal Compliance achieved1 linked violation
December 6, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
December 6, 2016Federal Compliance achieved1 linked violation
December 6, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
December 6, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
October 15, 2016Federal Compliance achieved1 linked violation
September 28, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 28, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 28, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 28, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 28, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 28, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 28, 2016Federal Compliance achieved1 linked violation
July 1, 2016Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
May 20, 2016Federal Compliance achieved1 linked violation
May 20, 2016Federal Compliance achieved1 linked violation
May 20, 2016Federal Compliance achieved1 linked violation
May 20, 2016Federal Compliance achieved1 linked violation
May 20, 2016Federal Compliance achieved1 linked violation
May 20, 2016Federal Compliance achieved1 linked violation
November 23, 2015Federal Compliance achieved1 linked violation
November 23, 2015Federal Compliance achieved1 linked violation
November 23, 2015Federal Compliance achieved1 linked violation
May 11, 2015Federal Compliance achieved1 linked violation
November 26, 2014Federal Compliance achieved1 linked violation
August 14, 2014Federal Compliance achieved1 linked violation
August 14, 2014Federal Compliance achieved1 linked violation
March 14, 2014Federal Compliance achieved1 linked violation
February 5, 2014Federal Compliance achieved1 linked violation
February 5, 2014Federal Compliance achieved1 linked violation
February 5, 2014Federal Compliance achieved1 linked violation
January 7, 2013Federal Compliance achieved1 linked violation
December 31, 2012Federal Compliance achieved1 linked violation
August 14, 2012Federal Compliance achieved1 linked violation
May 15, 2012Federal Compliance achieved1 linked violation
February 22, 2012Federal Compliance achieved1 linked violation
January 30, 2012Federal Compliance achieved1 linked violation
January 30, 2012Federal Compliance achieved1 linked violation
January 30, 2012Federal Compliance achieved1 linked violation
January 30, 2012Federal Compliance achieved1 linked violation
January 9, 2012Federal Compliance achieved1 linked violation
January 9, 2012Federal Compliance achieved1 linked violation
January 9, 2012Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
August 9, 2011Federal Compliance achieved1 linked violation
June 7, 2011Federal Compliance achieved1 linked violation
June 7, 2011Federal Compliance achieved1 linked violation
March 23, 2011Federal Final Administrative Order issued20 linked violations
March 22, 2011Federal Final Administrative Order issuedgeneral compliance action — not tied to a specific violation on record
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 22, 2011Federal Final Administrative Order issued1 linked violation
March 9, 2011Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
February 16, 2011Federal Compliance achieved1 linked violation
February 16, 2011Federal Compliance achieved1 linked violation
February 16, 2011Federal Compliance achieved1 linked violation
December 13, 2010Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
September 15, 2010Federal Compliance achieved1 linked violation
September 15, 2010Federal Compliance achieved1 linked violation
May 21, 2010Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 11, 2010Federal Compliance achieved1 linked violation
March 11, 2010Federal Compliance achieved1 linked violation
March 11, 2010Federal Compliance achieved1 linked violation
March 11, 2010Federal Compliance achieved1 linked violation
March 11, 2010Federal Compliance achieved1 linked violation
February 26, 2010Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 26, 2010Federal Compliance achieved1 linked violation
August 11, 2009Federal Compliance achieved1 linked violation
August 11, 2009Federal Compliance achieved1 linked violation
August 11, 2009Federal Compliance achieved1 linked violation
August 11, 2009Federal Compliance achieved1 linked violation
August 11, 2009Federal Compliance achieved1 linked violation
August 11, 2009Federal Compliance achieved1 linked violation
August 11, 2009Federal Compliance achieved1 linked violation
August 11, 2009Federal Compliance achieved1 linked violation
June 2, 2009Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 18, 2009Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
August 20, 2008Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 1, 2008Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
June 26, 2008Federal Compliance achieved1 linked violation
June 26, 2008Federal Compliance achieved1 linked violation
May 25, 2008Federal Compliance achieved1 linked violation
April 14, 2008Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
December 11, 2007Federal Compliance achieved1 linked violation
December 11, 2007Federal Compliance achieved1 linked violation
August 20, 2007Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 17, 2007Federal Compliance achieved1 linked violation
July 17, 2007Federal Compliance achieved1 linked violation
July 17, 2007Federal Compliance achieved1 linked violation
July 17, 2007Federal Compliance achieved1 linked violation
July 17, 2007Federal Compliance achieved1 linked violation
July 17, 2007Federal Compliance achieved1 linked violation
July 17, 2007Federal Compliance achieved1 linked violation
July 17, 2007Federal Compliance achieved1 linked violation
July 17, 2007Federal Compliance achieved1 linked violation
July 17, 2007Federal Compliance achieved1 linked violation
July 11, 2007Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
September 20, 2006Federal Technical Assistance Visitgeneral compliance action — not tied to a specific violation on record
September 13, 2006Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
August 15, 2006Federal Compliance achieved1 linked violation
August 15, 2006Federal Compliance achieved1 linked violation
August 15, 2006Federal Compliance achieved1 linked violation
August 15, 2006Federal Compliance achieved1 linked violation
August 10, 2006Federal Compliance achieved1 linked violation
May 11, 2006Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
August 2, 2005Federal Compliance achieved1 linked violation
November 16, 2004Federal Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 16, 2004Federal Compliance achieved1 linked violation
December 26, 2001Federal Compliance achieved1 linked violation
December 26, 2001Federal Compliance achieved1 linked violation
January 27, 1998Federal Compliance achieved1 linked violation

Contact

Hopi High School

9287381440

Keams Canyon, AZ 86043