TWIN HILLS, AK · Dillingham Census Area County

TWIN HILLS WATER SYSTEM 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 Alaska’s official records. Always confirm current status with Alaska before making decisions based on this information.

System facts

System ID (PWSID): AK2260032
System type: Community Water System
Population served: 87
Service connections: 28
Ownership: Native American tribal
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Atrazine
October 1, 2025 – December 15, 2025
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2025 – October 7, 2025
Resolved
Monitoring, Regular
—
Chlordane
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Pentachlorophenol
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
2,4,5-TP
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
2,4-D
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Heptachlor epoxide
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Heptachlor
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Carbofuran
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Dinoseb
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Picloram
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Simazine
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
OXAMYL
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Glyphosate
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Endothall
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Diquat
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Toxaphene
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Methoxychlor
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
BHC-GAMMA
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Regular
—
Endrin
October 1, 2025 – December 15, 2025
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2025 – October 31, 2025
Resolved
Monitoring, Regular
—
Endrin
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Chlordane
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Pentachlorophenol
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
2,4-D
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Heptachlor epoxide
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Heptachlor
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
LASSO
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Atrazine
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
BHC-GAMMA
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Carbofuran
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Picloram
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Simazine
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
OXAMYL
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Glyphosate
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Endothall
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Diquat
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Dalapon
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Toxaphene
July 1, 2025 – September 30, 2025
Resolved
Monitoring, Regular
—
Methoxychlor
July 1, 2025 – September 30, 2025
Resolved
Failure to Consult with State
—
Groundwater Rule
June 22, 2025 – November 26, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Chlordane
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Pentachlorophenol
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
2,4,5-TP
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
2,4-D
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Heptachlor epoxide
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Heptachlor
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
LASSO
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Atrazine
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Carbofuran
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Dinoseb
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Picloram
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Simazine
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
OXAMYL
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Glyphosate
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Endothall
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Diquat
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Dalapon
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Toxaphene
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Methoxychlor
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
BHC-GAMMA
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Endrin
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
LASSO
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Picloram
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Simazine
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Endothall
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Diquat
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Endrin
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2025 – March 31, 2025
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2024 – December 31, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
August 1, 2024 – August 31, 2024
Resolved
Public Notification Violation without NPDWR Violation
—
Public Notice
July 11, 2024 – August 14, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
June 1, 2024 – June 30, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2024 – May 31, 2024
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2024 – December 31, 2024
Resolved
Failure to Consult with State
—
Groundwater Rule
November 17, 2023 – September 17, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
May 1, 2023 – May 31, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
April 1, 2023 – April 30, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2023 – March 31, 2023
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2023 – December 31, 2023
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2021 – December 31, 2021
Resolved
Public Notification Violation without NPDWR Violation
—
Public Notice
August 4, 2021 – August 4, 2021
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
August 1, 2021 – August 31, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2021 – September 22, 2021
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2021 – December 31, 2021
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2021 – October 20, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
January 1, 2021 – January 31, 2021
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
January 5, 2020 – June 24, 2020
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
January 5, 2020 – June 24, 2020
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
January 5, 2020 – June 24, 2020
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
January 5, 2020 – June 24, 2020
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
January 5, 2020 – June 24, 2020
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
January 5, 2020 – June 24, 2020
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
January 4, 2020 – June 24, 2020
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
January 4, 2020 – June 24, 2020
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2020 – December 31, 2020
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2019 – October 31, 2019
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – January 9, 2017
Resolved
Failure To Address Deficiency
Health-based
Groundwater Rule
July 1, 2014 – June 24, 2020
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2013 – February 28, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2012 – August 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2012 – July 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2012 – June 30, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2012 – May 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2012 – April 30, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2012 – March 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2012 – February 29, 2012
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2012 – January 31, 2012
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2011 – December 31, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2011 – November 30, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2011 – October 31, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2011 – September 30, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2011 – August 31, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2011 – July 31, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2011 – June 30, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2011 – May 31, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2011 – April 30, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2011 – March 31, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2011 – February 28, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2010 – November 30, 2010
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2006 – September 30, 2006
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 2005 – September 30, 2005
Archived
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2005 – August 18, 2011
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2004 – October 31, 2004
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2004 – September 30, 2004
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 2004 – May 31, 2004
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2004 – March 31, 2004
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2004 – December 31, 2004
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2002 – October 31, 2002
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2001 – December 31, 2001
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
February 1, 2001 – February 28, 2001
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 1999 – August 31, 1999
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1999 – July 31, 1999
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 1999 – February 28, 1999
Archived
Monitoring, Regular
—
Mercury
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 1998 – August 31, 1998
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1998 – July 31, 1998
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 1998 – February 28, 1998
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 1997 – August 31, 1997
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1997 – July 31, 1997
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1996 – April 30, 1996
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1996 – March 31, 1996
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1995 – November 30, 1995
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1995 – October 31, 1995
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 1995 – September 30, 1995
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1995 – July 31, 1995
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
May 1, 1995 – May 31, 1995
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1995 – April 30, 1995
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 1994 – December 31, 1994
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1994 – October 31, 1994
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1994 – July 31, 1994
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
July 1, 1994 – July 31, 1994
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1994 – June 30, 1994
Archived
Monitoring, Regular
—
Xylenes, Total
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Benzene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Styrene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Toluene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1994 – December 31, 1994
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 1993 – November 30, 1993
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
October 1, 1993 – October 31, 1993
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 1993 – August 31, 1993
Archived
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1993 – December 14, 1998
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1993 – June 30, 1993
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 1993 – April 30, 1993
Archived
Monitoring, Regular
—
Nitrate
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
Vinyl chloride
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
Benzene
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1992 – March 31, 1992
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
October 1, 1991 – December 31, 1991
Archived
Monitoring, Regular
—
Benzene
October 1, 1991 – December 31, 1991
Archived
Monitoring, Regular
—
Vinyl chloride
October 1, 1991 – December 31, 1991
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
October 1, 1991 – December 31, 1991
Archived
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 1991 – December 31, 1991
Archived
Monitoring, Regular
—
1,2-Dichloroethane
October 1, 1991 – December 31, 1991
Archived
Monitoring, Regular
—
Trichloroethylene
October 1, 1991 – December 31, 1991
Archived
Monitoring, Regular
—
Carbon tetrachloride
October 1, 1991 – December 31, 1991
Archived
Monitoring, Regular
—
Arsenic
July 1, 1989 – June 30, 1992
Archived
Monitoring, Regular
—
Selenium
July 1, 1989 – June 30, 1992
Archived
Monitoring, Regular
—
Mercury
July 1, 1989 – June 30, 1992
Archived
Monitoring, Regular
—
Fluoride
July 1, 1989 – June 30, 1992
Archived
Monitoring, Regular
—
Cadmium
July 1, 1989 – June 30, 1992
Archived
Monitoring, Regular
—
Barium
July 1, 1989 – June 30, 1992
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
September 1, 1988 – August 31, 1992
Archived
Monitoring, Regular
—
Mercury
June 30, 1986 – June 30, 1989
Archived
Monitoring, Regular
—
Nitrate
June 30, 1986 – June 30, 1989
Archived
Monitoring, Regular
—
Arsenic
June 30, 1986 – June 30, 1989
Archived
Monitoring, Regular
—
Barium
June 30, 1986 – June 30, 1989
Archived
Monitoring, Regular
—
Fluoride
June 30, 1986 – June 30, 1989
Archived
Monitoring, Regular
—
Selenium
June 30, 1986 – June 30, 1989
Archived
Monitoring, Regular
—
Cadmium
June 30, 1986 – June 30, 1989
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2025 – December 15, 2025	Monitoring, Regular	Atrazine	—	Resolved
October 1, 2025 – October 7, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Chlordane	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Pentachlorophenol	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	2,4,5-TP	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	2,4-D	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Heptachlor epoxide	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Heptachlor	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Carbofuran	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Dinoseb	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Picloram	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Simazine	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	OXAMYL	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Glyphosate	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Endothall	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Diquat	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Toxaphene	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Methoxychlor	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	BHC-GAMMA	—	Resolved
October 1, 2025 – December 15, 2025	Monitoring, Regular	Endrin	—	Resolved
October 1, 2025 – October 31, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Endrin	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Chlordane	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Pentachlorophenol	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	2,4,5-TP	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	2,4-D	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Heptachlor epoxide	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Heptachlor	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	LASSO	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Atrazine	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	BHC-GAMMA	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Carbofuran	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Picloram	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Simazine	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	OXAMYL	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Glyphosate	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Endothall	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Diquat	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Dalapon	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Toxaphene	—	Resolved
July 1, 2025 – September 30, 2025	Monitoring, Regular	Methoxychlor	—	Resolved
June 22, 2025 – November 26, 2025	Failure to Consult with State	Groundwater Rule	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Chlordane	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Pentachlorophenol	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	2,4,5-TP	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	2,4-D	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Heptachlor epoxide	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Heptachlor	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	LASSO	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Atrazine	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Carbofuran	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Dinoseb	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Picloram	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Simazine	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	OXAMYL	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Glyphosate	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Endothall	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Diquat	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Dalapon	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Toxaphene	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Methoxychlor	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	BHC-GAMMA	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Endrin	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	LASSO	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Picloram	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Simazine	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Endothall	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Diquat	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Endrin	—	Resolved
January 1, 2025 – March 31, 2025	Monitoring, Regular	Methoxychlor	—	Resolved
December 1, 2024 – December 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2024 – August 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 11, 2024 – August 14, 2024	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
June 1, 2024 – June 30, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
May 1, 2024 – May 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2024 – December 31, 2024	Monitoring, Regular	Nitrate	—	Resolved
November 17, 2023 – September 17, 2024	Failure to Consult with State	Groundwater Rule	—	Resolved
May 1, 2023 – May 31, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
April 1, 2023 – April 30, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
March 1, 2023 – March 31, 2023	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2023 – December 31, 2023	Monitoring, Regular	Nitrate	—	Resolved
December 1, 2021 – December 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 4, 2021 – August 4, 2021	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
August 1, 2021 – August 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2021 – September 22, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2021 – October 20, 2022	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2021 – January 31, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 5, 2020 – June 24, 2020	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
January 5, 2020 – June 24, 2020	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
January 5, 2020 – June 24, 2020	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
January 5, 2020 – June 24, 2020	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
January 5, 2020 – June 24, 2020	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
January 5, 2020 – June 24, 2020	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
January 4, 2020 – June 24, 2020	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
January 4, 2020 – June 24, 2020	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
January 1, 2020 – December 31, 2020	Monitoring, Regular	Nitrate	—	Resolved
October 1, 2019 – October 31, 2019	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2016 – January 9, 2017	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2014 – June 24, 2020	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
February 1, 2013 – February 28, 2013	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2012 – August 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2012 – July 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2012 – June 30, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 2012 – May 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2012 – April 30, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2012 – March 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
February 1, 2012 – February 29, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2012 – December 31, 2012	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2012 – January 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
December 1, 2011 – December 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2011 – November 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2011 – October 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2011 – September 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2011 – August 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2011 – July 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2011 – June 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
May 1, 2011 – May 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2011 – April 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2011 – March 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
February 1, 2011 – February 28, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2010 – November 30, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 2005 – September 30, 2005	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
January 1, 2005 – August 18, 2011	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2004 – October 31, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 2004 – September 30, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
May 1, 2004 – May 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
March 1, 2004 – March 31, 2004	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 2004 – December 31, 2004	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2002 – October 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
December 1, 2001 – December 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 2001 – February 28, 2001	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
August 1, 1999 – August 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
July 1, 1999 – July 31, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 1999 – February 28, 1999	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1999 – December 31, 2001	Monitoring, Regular	Mercury	—	Resolved
August 1, 1998 – August 31, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
July 1, 1998 – July 31, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 1998 – February 28, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
August 1, 1997 – August 31, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
July 1, 1997 – July 31, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
April 1, 1996 – April 30, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
March 1, 1996 – March 31, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
November 1, 1995 – November 30, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
October 1, 1995 – October 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
September 1, 1995 – September 30, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
July 1, 1995 – July 31, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
May 1, 1995 – May 31, 1995	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
April 1, 1995 – April 30, 1995	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
December 1, 1994 – December 31, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
October 1, 1994 – October 31, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
July 1, 1994 – July 31, 1994	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
July 1, 1994 – July 31, 1994	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
June 1, 1994 – June 30, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
January 1, 1994 – December 31, 1994	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Benzene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Styrene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Toluene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 1994 – December 31, 1994	Monitoring, Regular	Nitrate	—	Resolved
November 1, 1993 – November 30, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
October 1, 1993 – October 31, 1993	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
August 1, 1993 – August 31, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
July 1, 1993 – December 14, 1998	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
June 1, 1993 – June 30, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
April 1, 1993 – April 30, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
January 1, 1993 – December 31, 1993	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1992 – March 31, 1992	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	Vinyl chloride	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	Benzene	—	Archived
January 1, 1992 – March 31, 1992	Monitoring, Regular	1,2-Dichloroethane	—	Archived
October 1, 1991 – December 31, 1991	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
October 1, 1991 – December 31, 1991	Monitoring, Regular	Benzene	—	Archived
October 1, 1991 – December 31, 1991	Monitoring, Regular	Vinyl chloride	—	Archived
October 1, 1991 – December 31, 1991	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
October 1, 1991 – December 31, 1991	Monitoring, Regular	p-Dichlorobenzene	—	Archived
October 1, 1991 – December 31, 1991	Monitoring, Regular	1,2-Dichloroethane	—	Archived
October 1, 1991 – December 31, 1991	Monitoring, Regular	Trichloroethylene	—	Archived
October 1, 1991 – December 31, 1991	Monitoring, Regular	Carbon tetrachloride	—	Archived
July 1, 1989 – June 30, 1992	Monitoring, Regular	Arsenic	—	Archived
July 1, 1989 – June 30, 1992	Monitoring, Regular	Selenium	—	Archived
July 1, 1989 – June 30, 1992	Monitoring, Regular	Mercury	—	Archived
July 1, 1989 – June 30, 1992	Monitoring, Regular	Fluoride	—	Archived
July 1, 1989 – June 30, 1992	Monitoring, Regular	Cadmium	—	Archived
July 1, 1989 – June 30, 1992	Monitoring, Regular	Barium	—	Archived
September 1, 1988 – August 31, 1992	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
June 30, 1986 – June 30, 1989	Monitoring, Regular	Mercury	—	Archived
June 30, 1986 – June 30, 1989	Monitoring, Regular	Nitrate	—	Archived
June 30, 1986 – June 30, 1989	Monitoring, Regular	Arsenic	—	Archived
June 30, 1986 – June 30, 1989	Monitoring, Regular	Barium	—	Archived
June 30, 1986 – June 30, 1989	Monitoring, Regular	Fluoride	—	Archived
June 30, 1986 – June 30, 1989	Monitoring, Regular	Selenium	—	Archived
June 30, 1986 – June 30, 1989	Monitoring, Regular	Cadmium	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

December 15, 2025State Compliance achieved120 linked violations
November 26, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
November 26, 2025State Compliance achieved1 linked violation
November 25, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
November 24, 2025State Compliance achieved1 linked violation
November 10, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
October 10, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
October 7, 2025State Compliance achieved1 linked violation
October 1, 2025State Compliance achieved2 linked violations
September 26, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
August 11, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
August 5, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
July 15, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
May 21, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
May 1, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
May 1, 2025State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
April 9, 2025State Compliance Meeting conducted2 linked violations
February 25, 2025State Compliance achieved3 linked violations
December 19, 2024State Compliance Meeting conducted1 linked violation
September 25, 2024State Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 17, 2024State Compliance achieved2 linked violations
August 15, 2024State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
July 26, 2024State Compliance achieved2 linked violations
July 9, 2024State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
July 9, 2024State Boil Water Ordergeneral compliance action — not tied to a specific violation on record
November 17, 2023State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
September 7, 2023State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
September 5, 2023State Boil Water Ordergeneral compliance action — not tied to a specific violation on record
June 26, 2023State Compliance achieved3 linked violations
June 20, 2023State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
December 6, 2022State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 5, 2022State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
December 5, 2022State Boil Water Ordergeneral compliance action — not tied to a specific violation on record
December 5, 2022State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
October 31, 2022State Compliance Meeting conducted3 linked violations
October 23, 2022State Compliance achieved2 linked violations
October 20, 2022State Compliance achieved1 linked violation
August 25, 2022State Compliance Meeting conducted1 linked violation
May 2, 2022State Compliance Meeting conducted3 linked violations
January 18, 2022State Compliance achieved4 linked violations
September 22, 2021State Compliance achieved2 linked violations
August 23, 2021State Compliance Meeting conducted1 linked violation
August 11, 2021State Compliance Meeting conducted1 linked violation
August 5, 2021State Compliance Meeting conducted1 linked violation
August 3, 2021State Public Notification issued3 linked violations
July 16, 2021State Compliance Meeting conducted1 linked violation
July 14, 2021State Compliance Meeting conducted1 linked violation
June 24, 2020State Compliance achieved2 linked violations
June 24, 2020State Compliance achieved1 linked violation
June 24, 2020State Compliance achieved1 linked violation
June 24, 2020State Compliance achieved1 linked violation
June 24, 2020State Compliance achieved1 linked violation
June 24, 2020State Compliance achieved2 linked violations
June 24, 2020State Compliance achieved2 linked violations
June 24, 2020State Compliance achieved3 linked violations
June 24, 2020State Compliance achieved3 linked violations
June 22, 2020State Compliance Meeting conducted9 linked violations
June 19, 2020State Compliance Meeting conducted8 linked violations
June 4, 2020State Compliance Meeting conducted10 linked violations
May 26, 2020State Compliance Meeting conducted10 linked violations
January 30, 2020State Compliance achieved1 linked violation
December 18, 2017State Compliance Meeting conducted1 linked violation
November 14, 2017State Boil Water Order1 linked violation
August 30, 2017State Compliance Meeting conducted1 linked violation
August 22, 2017State Boil Water Order1 linked violation
November 2, 2016State Compliance achieved1 linked violation
November 23, 2015State Violation/Reminder Notice1 linked violation
November 6, 2015State Violation/Reminder Notice1 linked violation
November 20, 2013State Compliance Meeting conducted1 linked violation
October 16, 2013State Compliance Meeting conducted1 linked violation
March 12, 2013State Compliance achieved10 linked violations
September 12, 2012State Compliance achieved20 linked violations
July 18, 2012Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 23, 2011State Boil Water Order2 linked violations
May 6, 2010State Compliance Meeting conducted2 linked violations
March 23, 2010State Boil Water Order1 linked violation
September 17, 2006State Boil Water Ordergeneral compliance action — not tied to a specific violation on record
July 12, 2005State Violation/Reminder Notice1 linked violation
March 29, 2005State Other2 linked violations
March 22, 2004State Othergeneral compliance action — not tied to a specific violation on record
February 26, 2004State Othergeneral compliance action — not tied to a specific violation on record
October 25, 2002State Boil Water Order1 linked violation
June 26, 2002State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
April 29, 2002State Other1 linked violation
March 8, 2002State Violation/Reminder Notice2 linked violations
February 5, 2002State Othergeneral compliance action — not tied to a specific violation on record
February 4, 2002State Violation/Reminder Notice1 linked violation
February 1, 2002State Othergeneral compliance action — not tied to a specific violation on record
December 6, 2001State Other1 linked violation
December 4, 2001State Othergeneral compliance action — not tied to a specific violation on record
November 6, 2001State Compliance achieved2 linked violations
August 14, 2001State Compliance achieved1 linked violation
August 8, 2001State Othergeneral compliance action — not tied to a specific violation on record
June 28, 2001State Other5 linked violations
May 14, 2001State Other2 linked violations
April 4, 2001State Othergeneral compliance action — not tied to a specific violation on record
March 8, 2001State Othergeneral compliance action — not tied to a specific violation on record
January 4, 2001State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
December 6, 2000State Othergeneral compliance action — not tied to a specific violation on record
October 13, 2000State Othergeneral compliance action — not tied to a specific violation on record
July 27, 2000State Compliance Meeting conductedgeneral compliance action — not tied to a specific violation on record
June 16, 2000State Other1 linked violation
June 15, 2000State Other2 linked violations
December 31, 1999State Compliance achieved1 linked violation
November 18, 1999State Compliance Meeting conducted2 linked violations
April 9, 1999State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 24, 1999State Othergeneral compliance action — not tied to a specific violation on record
February 22, 1999State Compliance achievedgeneral compliance action — not tied to a specific violation on record
December 14, 1998State Compliance achieved20 linked violations
December 9, 1998State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 31, 1998State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 5, 1998State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 3, 1998State Othergeneral compliance action — not tied to a specific violation on record
December 3, 1997State Violation/Reminder Notice2 linked violations
November 7, 1996State Othergeneral compliance action — not tied to a specific violation on record
April 8, 1996State Othergeneral compliance action — not tied to a specific violation on record
March 18, 1996State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 12, 1996State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
November 27, 1995State Other1 linked violation
October 20, 1995State Boil Water Order1 linked violation
September 28, 1995State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 13, 1995State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
June 16, 1994State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
January 11, 1993State Boil Water Ordergeneral compliance action — not tied to a specific violation on record
November 12, 1992State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
June 10, 1992State Formal Notice of Violation issued8 linked violations
August 10, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record

Contact

CANO, BEVERLY

907-525-4821

TWIN HILLS, AK 99576-8996