THOMPSON FALLS, MT · Sanders County
THOMPSON FALLS CITY 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)
- MT0000341
- System type
- Community Water System
- Population served
- 1,950
- Service connections
- 719
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2015 – July 17, 2015
ResolvedTreatment Technique (SWTR and GWR)
Health-basedSurface Water Treatment Rule
December 1, 1999 – December 31, 1999
ResolvedMonitoring, Repeat Major (TCR)
—Coliform (TCR)
April 1, 1997 – April 30, 1997
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
June 1, 1994 – June 30, 1994
ResolvedMonitoring, Regular
—Mercury
January 1, 1994 – December 31, 1994
ResolvedMonitoring, Regular
—Nitrate
January 1, 1994 – December 31, 1994
ResolvedMonitoring, Regular
—Antimony, Total
January 1, 1994 – December 31, 1994
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2015 – July 17, 2015 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| December 1, 1999 – December 31, 1999 | Treatment Technique (SWTR and GWR) | Surface Water Treatment Rule | Health-based | Resolved |
| April 1, 1997 – April 30, 1997 | Monitoring, Repeat Major (TCR) | Coliform (TCR) | — | Resolved |
| June 1, 1994 – June 30, 1994 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 1994 – December 31, 1994 | Monitoring, Regular | Mercury | — | Resolved |
| January 1, 1994 – December 31, 1994 | Monitoring, Regular | Nitrate | — | Resolved |
| January 1, 1994 – December 31, 1994 | Monitoring, Regular | Antimony, Total | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- July 17, 2015State Compliance achieved1 linked violation
- July 15, 2015State Violation/Reminder Notice1 linked violation
- August 12, 2009State Compliance achieved1 linked violation
- May 15, 2009State Compliance achieved1 linked violation
- May 15, 2009State Compliance achieved2 linked violations
- May 15, 2009State Compliance achieved2 linked violations
- May 15, 2009State Compliance achieved1 linked violation
- May 15, 2009State Compliance achieved1 linked violation
- May 15, 2009State Compliance achieved1 linked violation
- December 29, 2008State Compliance achieved14 linked violations
- December 26, 2005State Violation/Reminder Notice1 linked violation
- December 26, 2005State Public Notification requested1 linked violation
- May 15, 2001State Compliance achieved1 linked violation
- May 9, 2001State Administrative/Compliance Order without penalty issued1 linked violation
Contact
HARNETT, JONATHAN O
406-827-3557
THOMPSON FALLS, MT 59813