Public water system record
City of Thompson Falls
Serves Thompson Falls, Sanders County, MT · 1,950 people served
Federal records show no health-based violations and no monitoring or reporting issues for City of Thompson Falls in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- City of Thompson Falls draws water from 2 wells and 1 spring.
- Most recent formal enforcement: compliance order (no penalty) by Montana, May 2001.
- Record on file since 1981, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 2 unknown out of 755 service lines.
Check whether City of Thompson Falls serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016, and no monitoring or reporting violations either.
Full record since 1981
EPA's records for City of Thompson Falls go back to 1981. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 29 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 8 |
| 1990s | 1 | 19 |
| 2000s | 0 | 1 |
| 2010 to October 18, 2016 | 0 | 1 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began December 1999, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1999 | Resolved |
Enforcement actions
Montana regulators took 1 formal enforcement action against City of Thompson Falls in 2001. The most recent was a compliance order (no penalty) in May 2001.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 9, 2001 | Montana | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
Where the water comes from
City of Thompson Falls draws water from 2 wells and 1 spring. 1 smaller public system such as schools, businesses or campgrounds buys water from City of Thompson Falls.
Annual water quality report
City of Thompson Falls must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Montana.
Certified drinking water labs by state EPA guidance for private wells