GRASS RANGE, MT · Fergus County

GRASS RANGE TOWN OF 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): MT0000231
System type: Community Water System
Population served: 102
Service connections: 88
Ownership: local government
Water source: groundwater (wells)

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2023 – June 19, 2024
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023 – July 18, 2023
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2023 – December 31, 2025
Archived
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2023 – December 31, 2023
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2023 – December 31, 2025
Archived
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2020 – August 7, 2020
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2016 – July 19, 2016
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2015 – July 20, 2015
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2014 – October 6, 2014
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2013 – March 28, 2018
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2013 – June 10, 2014
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Benzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Toluene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Styrene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Asbestos
January 1, 2011 – December 31, 2013
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2010 – August 3, 2010
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
May 1, 2010 – August 30, 2010
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Toluene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2004 – September 30, 2004
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 2004 – June 30, 2004
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2004 – December 31, 2004
Resolved
Monitoring, Regular
—
Nitrate-Nitrite
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2001 – October 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2001 – April 30, 2001
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1993 – December 31, 1993
Resolved

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, 2023 – June 19, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2023 – July 18, 2023	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2023 – December 31, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
January 1, 2023 – December 31, 2023	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2023 – December 31, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
July 1, 2020 – August 7, 2020	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2016 – July 19, 2016	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2015 – July 20, 2015	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
July 1, 2014 – October 6, 2014	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
October 1, 2013 – March 28, 2018	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
October 1, 2013 – June 10, 2014	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Benzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Toluene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Styrene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Asbestos	—	Resolved
July 1, 2010 – August 3, 2010	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
May 1, 2010 – August 30, 2010	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Toluene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
April 1, 2004 – June 30, 2004	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2004 – December 31, 2004	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Nitrate-Nitrite	—	Resolved
October 1, 2001 – October 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2001 – April 30, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Nitrate	—	Resolved

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

Enforcement actions

November 5, 2025State Public Notification received2 linked violations
October 22, 2025State Public Notification requested2 linked violations
October 22, 2025State Violation/Reminder Notice2 linked violations
June 19, 2024State Compliance achieved1 linked violation
April 3, 2024State Public Notification received1 linked violation
February 2, 2024State Compliance achieved1 linked violation
January 24, 2024State Public Notification requested1 linked violation
January 24, 2024State Violation/Reminder Notice1 linked violation
November 9, 2023State Public Notification requested1 linked violation
November 9, 2023State Violation/Reminder Notice1 linked violation
July 18, 2023State Compliance achieved1 linked violation
July 11, 2023State Violation/Reminder Notice1 linked violation
August 7, 2020State Compliance achieved1 linked violation
July 20, 2020State Violation/Reminder Notice1 linked violation
March 28, 2018State Compliance achieved1 linked violation
July 19, 2016State Compliance achieved1 linked violation
July 14, 2016State Violation/Reminder Notice1 linked violation
July 20, 2015State Compliance achieved1 linked violation
July 15, 2015State Violation/Reminder Notice1 linked violation
October 6, 2014State Compliance achieved1 linked violation
July 14, 2014State Violation/Reminder Notice1 linked violation
June 10, 2014State Compliance achieved1 linked violation
April 10, 2014State Compliance achieved1 linked violation
January 24, 2014State Violation/Reminder Notice1 linked violation
January 24, 2014State Public Notification requested1 linked violation
December 20, 2013State Violation/Reminder Notice1 linked violation
October 23, 2013State Public Notification requested1 linked violation
October 23, 2013State Violation/Reminder Notice1 linked violation
March 13, 2012State Compliance achieved21 linked violations
January 31, 2012State Violation/Reminder Notice21 linked violations
January 31, 2012State Public Notification requested21 linked violations
August 30, 2010State Compliance achieved1 linked violation
August 7, 2010State Violation/Reminder Notice1 linked violation
August 7, 2010State Public Notification requested1 linked violation
August 3, 2010State Compliance achieved1 linked violation
July 12, 2010State Public Notification requested1 linked violation
July 12, 2010State Violation/Reminder Notice1 linked violation
January 6, 2009State Compliance achieved3 linked violations
February 20, 2007State Compliance achieved21 linked violations
January 14, 2007State Public Notification requested21 linked violations
May 17, 2006State Compliance achieved5 linked violations
February 15, 2006State Other5 linked violations
July 5, 2005State Compliance achieved4 linked violations
June 10, 2002State Compliance achieved2 linked violations
December 9, 2001State Public Notification requested1 linked violation
December 9, 2001State Violation/Reminder Notice17 linked violations
June 12, 2001State Violation/Reminder Notice1 linked violation
June 12, 2001State Public Notification requested1 linked violation
May 15, 2001State Compliance achieved1 linked violation
December 31, 2000State Violation/Reminder Notice1 linked violation
December 31, 2000State Violation/Reminder Notice1 linked violation

Contact

CUSHING, BECKY

406-428-2174

GRASS RANGE, MT 59032