BILLINGS, MT · Yellowstone County

CRYSTAL SPRINGS 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 Montana’s official records. Always confirm current status with Montana before making decisions based on this information.

System facts

System ID (PWSID): MT0003986
System type: Community Water System
Population served: 225
Service connections: 85
Ownership: local government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
January 1, 2025 – March 31, 2025
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
April 1, 2024 – June 30, 2024
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
January 1, 2024 – March 31, 2024
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
October 1, 2023 – December 31, 2023
Archived
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023 – July 5, 2023
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
September 27, 2020 – November 11, 2020
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
January 1, 2020 – March 31, 2020
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
April 1, 2019 – June 30, 2019
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
January 1, 2019 – March 31, 2019
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
October 1, 2018 – December 31, 2018
Archived
Lead Consumer Notice
—
Lead and Copper Rule
December 30, 2014 – February 9, 2015
Resolved
WQP Entry Point/Tap Treatment Technique Non-Compliance
Health-based
Lead and Copper Rule
July 1, 2009 – December 31, 2009
Resolved
OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
March 21, 2009 – October 21, 2009
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
January 1, 2009 – March 31, 2009
Archived
Water Quality Parameter M/R
—
Lead and Copper Rule
July 1, 2008 – December 31, 2008
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
July 1, 2008 – December 31, 2008
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
July 1, 2008 – December 31, 2008
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate-Nitrite
January 1, 2008 – March 31, 2008
Archived
Monitoring, Regular
—
Vinyl chloride
January 1, 2008 – December 31, 2008
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2008 – June 30, 2008
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Toluene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Benzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
April 1, 2006 – June 30, 2006
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Benzene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Toluene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Styrene
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2005 – December 31, 2005
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2005 – June 30, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2005 – August 2, 2007
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2005 – December 31, 2005
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2004 – August 2, 2007
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
July 1, 2004 – December 31, 2004
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2004 – June 30, 2004
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2004 – March 29, 2006
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2003 – September 30, 2004
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2003 – March 29, 2006
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2003 – June 30, 2003
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2002 – March 29, 2006
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2002 – September 30, 2004
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2002 – December 31, 2002
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 2002 – March 29, 2006
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 2001 – March 29, 2006
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2001 – June 30, 2001
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2001 – June 30, 2001
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
July 1, 2000 – December 31, 2000
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2000 – June 30, 2000
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2000 – June 30, 2000
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 2000 – June 30, 2000
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
July 1, 1999 – March 29, 2006
Resolved
Monitoring, Regular
—
Simazine
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Diquat
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Endrin
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1999 – December 31, 1999
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Arsenic
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
LASSO
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Picloram
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 1999 – December 31, 2001
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1999 – March 29, 2006
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
May 1, 1998 – May 31, 1998
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
January 1, 1998 – March 29, 2006
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
Vinyl chloride
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
Toluene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
Tetrachloroethylene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
Styrene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
Benzene
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1996 – December 31, 1998
Archived
Monitoring, Regular
—
Xylenes, Total
January 1, 1996 – December 31, 1998
Archived

Archived 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
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
January 1, 2024 – March 31, 2024	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
October 1, 2023 – December 31, 2023	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
July 1, 2023 – July 5, 2023	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
September 27, 2020 – November 11, 2020	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
December 30, 2014 – February 9, 2015	Lead Consumer Notice	Lead and Copper Rule	—	Resolved
July 1, 2009 – December 31, 2009	WQP Entry Point/Tap Treatment Technique Non-Compliance	Lead and Copper Rule	Health-based	Resolved
March 21, 2009 – October 21, 2009	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
July 1, 2008 – December 31, 2008	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
July 1, 2008 – December 31, 2008	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
July 1, 2008 – December 31, 2008	Water Quality Parameter M/R	Lead and Copper Rule	—	Archived
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Single Sample	Nitrate-Nitrite	Health-based	Archived
January 1, 2008 – December 31, 2008	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2008 – June 30, 2008	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Toluene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Benzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Benzene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Toluene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Styrene	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2005 – June 30, 2005	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2005 – August 2, 2007	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2004 – August 2, 2007	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2004 – December 31, 2004	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2004 – June 30, 2004	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2004 – March 29, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2003 – September 30, 2004	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2003 – March 29, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2003 – June 30, 2003	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
July 1, 2002 – March 29, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2002 – September 30, 2004	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2002 – March 29, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
July 1, 2001 – March 29, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 2001 – June 30, 2001	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2001 – June 30, 2001	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
July 1, 2000 – December 31, 2000	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2000 – June 30, 2000	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2000 – June 30, 2000	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
January 1, 2000 – June 30, 2000	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
July 1, 1999 – March 29, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Simazine	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Diquat	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Endrin	—	Resolved
January 1, 1999 – December 31, 1999	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Arsenic	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	LASSO	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Picloram	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 1999 – March 29, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
May 1, 1998 – May 31, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1998 – March 29, 2006	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	p-Dichlorobenzene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	Vinyl chloride	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	Toluene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	Tetrachloroethylene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	Styrene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	Benzene	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 1996 – December 31, 1998	Monitoring, Regular	Xylenes, Total	—	Archived

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

Enforcement actions

March 20, 2025State Public Notification received1 linked violation
March 18, 2025State Public Notification requested1 linked violation
March 18, 2025State Violation/Reminder Notice1 linked violation
November 7, 2024State Public Notification received1 linked violation
October 31, 2024State Public Notification requested1 linked violation
October 31, 2024State Violation/Reminder Notice1 linked violation
July 1, 2024State Public Notification received1 linked violation
June 27, 2024State Public Notification requested1 linked violation
June 27, 2024State Violation/Reminder Notice2 linked violations
March 15, 2024State Violation/Reminder Notice1 linked violation
March 15, 2024State Public Notification requested1 linked violation
January 24, 2024State Public Notification received1 linked violation
January 8, 2024State Public Notification requested1 linked violation
January 8, 2024State Violation/Reminder Notice1 linked violation
July 11, 2023State Violation/Reminder Notice1 linked violation
July 5, 2023State Compliance achieved1 linked violation
November 11, 2020State Compliance achieved1 linked violation
November 11, 2020State Public Notification received1 linked violation
November 6, 2020State Public Notification requested1 linked violation
November 6, 2020State Violation/Reminder Notice1 linked violation
July 6, 2020State Administrative/Compliance Order without penalty issued8 linked violations
March 22, 2020State Public Notification received1 linked violation
March 20, 2020State Public Notification requested1 linked violation
March 20, 2020State Violation/Reminder Notice1 linked violation
May 15, 2019State Other2 linked violations
May 15, 2019State Other1 linked violation
May 15, 2019State Other1 linked violation
May 15, 2019State Other1 linked violation
May 15, 2019State Other1 linked violation
May 15, 2019State Other3 linked violations
April 26, 2019State Public Notification received1 linked violation
April 26, 2019State Public Notification received1 linked violation
April 26, 2019State Public Notification received1 linked violation
April 22, 2019State Violation/Reminder Notice1 linked violation
April 22, 2019State Public Notification requested1 linked violation
April 22, 2019State Violation/Reminder Notice1 linked violation
April 22, 2019State Public Notification requested1 linked violation
December 28, 2018State Violation/Reminder Notice1 linked violation
December 28, 2018State Public Notification requested1 linked violation
February 9, 2015State Compliance achieved1 linked violation
January 26, 2015State Violation/Reminder Notice1 linked violation
September 14, 2010State Compliance achieved1 linked violation
January 17, 2010State Violation/Reminder Notice1 linked violation
January 17, 2010State Public Notification requested1 linked violation
December 7, 2009State Administrative/Compliance Order without penalty issued2 linked violations
October 21, 2009State Compliance achieved1 linked violation
May 21, 2009State Compliance achieved3 linked violations
April 3, 2009State Compliance achieved21 linked violations
March 27, 2009State Public Notification received2 linked violations
March 25, 2009State Violation/Reminder Notice2 linked violations
March 25, 2009State Public Notification requested3 linked violations
March 12, 2009State Other5 linked violations
February 10, 2009State Public Notification requested22 linked violations
February 10, 2009State Violation/Reminder Notice21 linked violations
February 8, 2009State Public Notification requested1 linked violation
February 8, 2009State Violation/Reminder Notice1 linked violation
February 8, 2009State Public Notification requested2 linked violations
February 8, 2009State Violation/Reminder Notice3 linked violations
September 5, 2008State Administrative/Compliance Order with penalty issued1 linked violation
May 27, 2008State Compliance achieved2 linked violations
May 15, 2008State Public Notification requested1 linked violation
May 15, 2008State Violation/Reminder Notice2 linked violations
May 3, 2008State Violation/Reminder Notice3 linked violations
February 13, 2008State Public Notification requested3 linked violations
February 13, 2008State Violation/Reminder Notice2 linked violations
August 2, 2007State Compliance achieved3 linked violations
August 2, 2007State Compliance achieved3 linked violations
August 15, 2006State Compliance achieved1 linked violation
May 10, 2006State Compliance achieved21 linked violations
March 29, 2006State Compliance achieved33 linked violations
February 10, 2006State Public Notification requested21 linked violations
February 10, 2006State Violation/Reminder Notice21 linked violations
August 19, 2005State Public Notification requested1 linked violation
August 19, 2005State Violation/Reminder Notice1 linked violation
January 3, 2005State Violation/Reminder Notice6 linked violations
January 3, 2005State Public Notification requested1 linked violation
January 3, 2005State Public Notification requested1 linked violation
January 3, 2005State Violation/Reminder Notice1 linked violation
January 3, 2005State Public Notification requested1 linked violation
January 3, 2005State Violation/Reminder Notice1 linked violation
January 3, 2005State Public Notification requested1 linked violation
January 3, 2005State Violation/Reminder Notice1 linked violation
January 3, 2005State Public Notification requested3 linked violations
January 3, 2005State Violation/Reminder Notice1 linked violation
January 3, 2005State Public Notification requested5 linked violations
January 3, 2005State Public Notification requested5 linked violations
January 3, 2005State Public Notification requested3 linked violations
January 3, 2005State Violation/Reminder Notice1 linked violation
January 3, 2005State Public Notification requested7 linked violations
January 3, 2005State Violation/Reminder Notice5 linked violations
September 30, 2004State Compliance achieved1 linked violation
September 30, 2004State Compliance achieved1 linked violation
September 16, 2004State Public Notification received35 linked violations
September 16, 2004State Public Notification received1 linked violation
April 7, 2004State Compliance achieved6 linked violations
February 18, 2004State Compliance achieved10 linked violations
October 17, 2003State Compliance achieved22 linked violations
October 12, 2003State Violation/Reminder Notice1 linked violation
February 18, 2003State Violation/Reminder Notice1 linked violation
December 23, 2002State Violation/Reminder Notice2 linked violations
July 25, 2002State Public Notification requested1 linked violation
July 5, 2002State Public Notification requested33 linked violations
July 5, 2002State Violation/Reminder Notice33 linked violations
April 19, 2002State Violation/Reminder Notice1 linked violation
April 19, 2002State Public Notification requested1 linked violation
June 23, 1998State Compliance achieved1 linked violation
June 23, 1998State Violation/Reminder Notice3 linked violations

Contact

STONE, SPENCER M

406-652-5523

BILLINGS, MT 59101