Public water system record
Mission Mountain Lake Co W and S Dist
Serves an area of Lake County, MT that includes Ronan · 118 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Mission Mountain Lake Co W and S Dist 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
- 1
Key facts
- Mission Mountain Lake Co W and S Dist draws water from 2 wells (1 of them for emergency, seasonal or other part-time use).
- Most recent enforcement action: boil water order by Montana, April 1999.
- Record on file since 1996, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 39 service lines.
Check whether Mission Mountain Lake Co W and S Dist 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.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2021 | Resolved |
Full record since 1996
EPA's records for Mission Mountain Lake Co W and S Dist go back to 1996. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 7 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began April 1999, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1999 | Resolved |
Enforcement actions
Montana regulators issued 1 boil water order to Mission Mountain Lake Co W and S Dist in 1999. The most recent was a boil water order in April 1999.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 30, 1999 | Montana | Boil water order | 1 violation (1 health-based): Total Coliform |
Where the water comes from
Mission Mountain Lake Co W and S Dist draws water from 2 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Mission Mountain Lake Co W and S Dist 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.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Mission Mountain Lake Co W and S Dist for a copy.
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