DILLON, MT · Beaverhead County

SKYLINE TR CT AND RV PARK 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 Montana’s official records. Always confirm current status with Montana before making decisions based on this information.

System facts

System ID (PWSID): MT0002515
System type: Community Water System
Population served: 75
Service connections: 51
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – July 18, 2025
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2024 – September 18, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2024 – August 21, 2024
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023 – August 17, 2023
Resolved
Treatment Technique, Level 1 Assessment (RTCR)
Health-based
Revised Total Coliform Rule
December 19, 2022 – November 29, 2023
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
August 24, 2022 – September 25, 2022
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2021 – January 7, 2022
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2021 – September 30, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2021 – September 8, 2021
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
December 1, 2020 – December 31, 2020
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2020 – September 10, 2021
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2020 – September 10, 2021
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
October 25, 2019 – November 25, 2019
Resolved
Treatment Technique, Level 1 Assessment (RTCR)
Health-based
Revised Total Coliform Rule
July 7, 2018 – October 1, 2018
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 2018 – June 26, 2018
Resolved
Monitoring, Regular
—
Combined Uranium
October 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 2017 – December 31, 2017
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 2017 – June 30, 2017
Resolved
Monitoring, Regular
—
Combined Uranium
April 1, 2017 – June 30, 2017
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
April 1, 2017 – June 30, 2017
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2015 – December 31, 2015
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2014 – December 31, 2016
Resolved
Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2014 – January 29, 2014
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Barium
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Chromium
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Mercury
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Nickel
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Selenium
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Endrin
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Simazine
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Picloram
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
LASSO
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Toluene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Regular
—
Styrene
January 1, 2014 – December 31, 2016
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2012 – April 24, 2012
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2011 – December 31, 2016
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2008 – December 31, 2016
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2004 – March 12, 2004
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2003 – September 30, 2004
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2003 – December 15, 2003
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Barium
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Beryllium, Total
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
BHC-GAMMA
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Methoxychlor
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
OXAMYL
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Simazine
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Picloram
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Dinoseb
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
LASSO
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
2,4,5-TP
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Xylenes, Total
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Vinyl chloride
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Benzene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Toluene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Styrene
January 1, 2002 – December 31, 2004
Archived
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 1999 – December 31, 2001
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1999 – June 25, 2002
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Simazine
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Endothall
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1998 – October 31, 1998
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1998 – June 25, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 1997 – December 31, 1997
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1997 – November 30, 1997
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1997 – December 31, 1997
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1997 – June 25, 2002
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Chromium
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Cadmium
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Arsenic
January 1, 1996 – December 31, 1998
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1996 – June 25, 2002
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Nickel
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 1996 – December 31, 1998
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1994 – December 31, 2000
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 1993 – October 31, 1993
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1982 – September 30, 1983
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
July 1, 2025 – July 18, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2024 – September 18, 2025	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2024 – August 21, 2024	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2023 – August 17, 2023	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
December 19, 2022 – November 29, 2023	Treatment Technique, Level 1 Assessment (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
August 24, 2022 – September 25, 2022	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
December 30, 2021 – January 7, 2022	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
September 1, 2021 – September 30, 2021	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2021 – September 8, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
December 1, 2020 – December 31, 2020	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2020 – September 10, 2021	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2020 – September 10, 2021	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 25, 2019 – November 25, 2019	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 7, 2018 – October 1, 2018	Treatment Technique, Level 1 Assessment (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
April 1, 2018 – June 26, 2018	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 2017 – December 31, 2017	Monitoring, Regular	Combined Uranium	—	Resolved
October 1, 2017 – December 31, 2017	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
April 1, 2017 – June 30, 2017	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
April 1, 2017 – June 30, 2017	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2017 – June 30, 2017	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived
December 1, 2015 – December 31, 2015	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2014 – January 29, 2014	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Barium	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Chromium	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Mercury	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Nickel	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Selenium	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Endrin	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Simazine	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Picloram	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	LASSO	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Toluene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2014 – December 31, 2016	Monitoring, Regular	Styrene	—	Resolved
April 1, 2012 – April 24, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2011 – December 31, 2016	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 2008 – December 31, 2016	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2004 – March 12, 2004	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2003 – September 30, 2004	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2003 – December 15, 2003	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Antimony, Total	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Barium	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Beryllium, Total	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	BHC-GAMMA	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Methoxychlor	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	OXAMYL	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Simazine	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Picloram	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Dinoseb	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	LASSO	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	2,4,5-TP	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Benzo(a)pyrene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Xylenes, Total	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Vinyl chloride	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Benzene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Toluene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 2002 – December 31, 2004	Monitoring, Regular	Styrene	—	Archived
January 1, 2000 – December 31, 2000	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 1999 – June 25, 2002	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Simazine	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Endothall	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
October 1, 1998 – October 31, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1998 – June 25, 2002	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
December 1, 1997 – December 31, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 1997 – November 30, 1997	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1997 – December 31, 1997	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1997 – June 25, 2002	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Chromium	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Cadmium	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Arsenic	—	Resolved
January 1, 1996 – June 25, 2002	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Nickel	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 1994 – December 31, 2000	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
October 1, 1993 – October 31, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 1982 – September 30, 1983	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

July 18, 2025State Compliance achieved5 linked violations
July 17, 2025State Violation/Reminder Notice3 linked violations
November 7, 2024State Public Notification requested2 linked violations
November 7, 2024State Violation/Reminder Notice4 linked violations
August 21, 2024State Compliance achieved1 linked violation
July 23, 2024State Violation/Reminder Notice1 linked violation
November 29, 2023State Compliance achieved1 linked violation
August 17, 2023State Compliance achieved1 linked violation
July 11, 2023State Violation/Reminder Notice1 linked violation
March 10, 2023State Public Notification requested1 linked violation
March 10, 2023State Violation/Reminder Notice1 linked violation
September 28, 2022State Public Notification requested1 linked violation
September 28, 2022State Violation/Reminder Notice1 linked violation
September 25, 2022State Compliance achieved1 linked violation
January 7, 2022State Compliance achieved1 linked violation
January 4, 2022State Violation/Reminder Notice1 linked violation
October 22, 2021State Public Notification requested1 linked violation
October 22, 2021State Violation/Reminder Notice1 linked violation
October 12, 2021State Compliance achieved1 linked violation
October 12, 2021State Compliance achieved1 linked violation
September 10, 2021State Compliance achieved1 linked violation
September 10, 2021State Compliance achieved1 linked violation
September 8, 2021State Compliance achieved1 linked violation
July 19, 2021State Violation/Reminder Notice1 linked violation
January 19, 2021State Violation/Reminder Notice1 linked violation
January 19, 2021State Public Notification requested1 linked violation
October 27, 2020State Violation/Reminder Notice1 linked violation
July 20, 2020State Violation/Reminder Notice1 linked violation
November 26, 2019State Violation/Reminder Notice1 linked violation
November 26, 2019State Public Notification requested1 linked violation
November 25, 2019State Compliance achieved1 linked violation
October 1, 2018State Compliance achieved1 linked violation
September 25, 2018State Public Notification requested1 linked violation
September 25, 2018State Violation/Reminder Notice1 linked violation
July 11, 2018State Violation/Reminder Notice1 linked violation
July 11, 2018State Public Notification requested1 linked violation
June 26, 2018State Compliance achieved1 linked violation
February 1, 2018State Compliance achieved1 linked violation
February 1, 2018State Compliance achieved1 linked violation
January 20, 2018State Public Notification requested1 linked violation
January 20, 2018State Violation/Reminder Notice1 linked violation
January 19, 2018State Violation/Reminder Notice1 linked violation
January 19, 2018State Public Notification requested1 linked violation
August 2, 2017State Compliance achieved1 linked violation
August 2, 2017State Compliance achieved1 linked violation
July 18, 2017State Public Notification requested1 linked violation
July 18, 2017State Violation/Reminder Notice1 linked violation
July 18, 2017State Public Notification requested1 linked violation
July 18, 2017State Public Notification requested1 linked violation
July 18, 2017State Violation/Reminder Notice1 linked violation
July 18, 2017State Violation/Reminder Notice1 linked violation
February 17, 2017State Compliance achieved23 linked violations
February 17, 2017State Compliance achieved10 linked violations
February 17, 2017State Compliance achieved1 linked violation
February 17, 2017State Compliance achieved21 linked violations
February 14, 2017State Public Notification requested21 linked violations
February 14, 2017State Violation/Reminder Notice21 linked violations
February 14, 2017State Public Notification requested23 linked violations
February 14, 2017State Violation/Reminder Notice23 linked violations
February 7, 2017State Compliance achieved1 linked violation
February 7, 2017State Compliance achieved1 linked violation
February 3, 2017State Public Notification requested1 linked violation
February 3, 2017State Violation/Reminder Notice1 linked violation
February 3, 2017State Public Notification requested10 linked violations
February 3, 2017State Violation/Reminder Notice10 linked violations
February 2, 2017State Violation/Reminder Notice1 linked violation
February 2, 2017State Public Notification requested1 linked violation
February 2, 2017State Violation/Reminder Notice1 linked violation
February 2, 2017State Public Notification requested1 linked violation
December 2, 2016State Compliance achieved1 linked violation
January 15, 2016State Public Notification requested1 linked violation
January 15, 2016State Violation/Reminder Notice1 linked violation
January 29, 2014State Compliance achieved1 linked violation
January 23, 2014State Violation/Reminder Notice1 linked violation
May 15, 2012State Violation/Reminder Notice1 linked violation
May 15, 2012State Public Notification requested1 linked violation
April 24, 2012State Compliance achieved1 linked violation
October 11, 2006State Public Notification received4 linked violations
September 19, 2006State Public Notification received33 linked violations
May 31, 2006State Other58 linked violations
May 12, 2006State Compliance achieved1 linked violation
December 2, 2005State Compliance achieved33 linked violations
April 15, 2005State Violation/Reminder Notice22 linked violations
April 14, 2005State Violation/Reminder Notice10 linked violations
April 13, 2005State Public Notification requested1 linked violation
April 13, 2005State Violation/Reminder Notice1 linked violation
September 30, 2004State Compliance achieved1 linked violation
August 19, 2004State Compliance achieved1 linked violation
December 15, 2003State Compliance achieved1 linked violation
October 12, 2003State Violation/Reminder Notice2 linked violations
January 16, 2003State Public Notification received1 linked violation
September 19, 2002State Compliance achieved4 linked violations
July 21, 2002State Violation/Reminder Notice1 linked violation
July 21, 2002State Public Notification requested3 linked violations
July 5, 2002State Violation/Reminder Notice35 linked violations
July 5, 2002State Public Notification requested35 linked violations
June 25, 2002State Compliance achieved25 linked violations
June 12, 2002State Compliance achieved4 linked violations
September 24, 2001State Public Notification requested1 linked violation
September 24, 2001State Violation/Reminder Notice1 linked violation
June 12, 2001State Violation/Reminder Notice1 linked violation
June 12, 2001State Public Notification requested1 linked violation
May 24, 2001State Public Notification requested1 linked violation
May 24, 2001State Violation/Reminder Notice1 linked violation
April 28, 2001State Violation/Reminder Notice1 linked violation
April 28, 2001State Public Notification requested1 linked violation
March 1, 2001State Other1 linked violation
March 1, 2001State Formal Notice of Violation issued2 linked violations
March 1, 2001State Compliance achieved1 linked violation
March 1, 2001State Compliance achieved1 linked violation
March 1, 2001State Other1 linked violation
December 31, 2000State Administrative/Compliance Order with penalty issued2 linked violations
December 31, 2000State Compliance achieved1 linked violation
December 31, 2000State Other1 linked violation
December 31, 2000State Civil Case filed in State court1 linked violation
December 31, 2000State Administrative/Compliance Order with penalty issued1 linked violation
December 31, 2000State Compliance achieved1 linked violation
December 31, 2000State Other1 linked violation
December 31, 2000State Civil Case filed in State court1 linked violation
December 31, 2000State Compliance achieved1 linked violation
December 31, 2000State Other1 linked violation
December 31, 2000State Civil Case filed in State court1 linked violation
December 31, 2000State Formal Notice of Violation issued5 linked violations
December 31, 2000State Other1 linked violation
December 31, 2000State Compliance achieved1 linked violation
December 31, 2000State Other1 linked violation
December 31, 2000State Civil Case filed in State court1 linked violation
December 31, 2000State Administrative/Compliance Order with penalty issued1 linked violation
December 31, 2000State Compliance achieved1 linked violation
December 31, 2000State Civil Case filed in State court1 linked violation
December 31, 2000State Other1 linked violation
December 31, 2000State Administrative/Compliance Order with penalty issued1 linked violation
December 31, 2000State Other1 linked violation
December 31, 2000State Formal Notice of Violation issued3 linked violations
November 8, 1999State Other15 linked violations
July 6, 1999State Public Notification requested3 linked violations
December 9, 1998State Violation/Reminder Notice1 linked violation
January 16, 1998State Violation/Reminder Notice10 linked violations
December 31, 1997State Civil Case filed in State court1 linked violation
December 12, 1997State Other1 linked violation
October 3, 1997State Administrative/Compliance Order with penalty issued1 linked violation
October 1, 1996State Other1 linked violation
October 10, 1983State no additional Formal Action needed1 linked violation

Contact

WOMACK, LACEY

406-683-4692

DILLON, MT 59725