GRASS RANGE, MT · Fergus County
GRASS RANGE TOWN OF Water System
Consumer Confidence Report status
GRASS RANGE TOWN OF must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for GRASS RANGE TOWN OF.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)
GRASS RANGE TOWN OF is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 102 people from groundwater.
As of August 1, 2026, its federal record holds 55 entries between 1993 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.
Of the 55, 48 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals, the Consumer Confidence Rule, and inorganic chemicals.
Violation history
Follow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2023 – June 19, 2024
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2023 – July 18, 2023
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—Nitrate-Nitrite
January 1, 2023 – December 31, 2023
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2023 – December 31, 2025
ArchivedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2020 – August 7, 2020
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2016 – July 19, 2016
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2015 – July 20, 2015
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2014 – October 6, 2014
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
October 1, 2013 – March 28, 2018
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2013 – June 10, 2014
ResolvedMonitoring, Regular
—Carbon tetrachloride
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Xylenes, Total
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Vinyl chloride
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Benzene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Toluene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Styrene
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Asbestos
January 1, 2011 – December 31, 2013
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2010 – August 3, 2010
ResolvedMonitoring, Source Water (GWR)
—E. COLI
May 1, 2010 – August 30, 2010
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—Benzene
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—Toluene
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—Vinyl chloride
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—Xylenes, Total
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—Nitrate-Nitrite
January 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Nitrate-Nitrite
January 1, 2002 – December 31, 2002
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
October 1, 2001 – October 31, 2001
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
April 1, 2001 – April 30, 2001
ResolvedMonitoring, 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 | Carbon tetrachloride | — | 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 | 1,2-Dichloropropane | — | 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 | 1,1,1-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 | CHLOROBENZENE | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | Benzene | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | Toluene | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | p-Dichlorobenzene | — | 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 | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | 1,2-Dichloroethane | — | 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 Public Notification requested1 linked violation
- January 24, 2014State Violation/Reminder Notice1 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 Violation/Reminder Notice1 linked violation
- July 12, 2010State Public Notification requested1 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
- April 13, 2005State Violation/Reminder Notice3 linked violations
- June 10, 2002State Compliance achieved2 linked violations
- December 9, 2001State Public Notification requested1 linked violation
- 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
Common questions
Is GRASS RANGE TOWN OF required to publish a Consumer Confidence Report?
- Yes. GRASS RANGE TOWN OF is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is GRASS RANGE TOWN OF’s next Consumer Confidence Report due?
- GRASS RANGE TOWN OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does GRASS RANGE TOWN OF have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for GRASS RANGE TOWN OF.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
CUSHING, BECKY
406-428-2174
GRASS RANGE, MT 59032