Public water system record
Sunset Colony Unapproved
On record as serving Roundup, Musselshell County, MT · Serves 75 people
Federal records show no health-based violations and 2 monitoring/reporting issues for Sunset Colony Unapproved 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
- 2
Key facts
- Sunset Colony Unapproved draws water from 1 well.
- Lead pipe inventory: 0 lead and 0 unknown out of 2 service lines.
Check whether Sunset Colony Unapproved 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
|
Jan 1, 2026 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Where the water comes from
Sunset Colony Unapproved draws water from 1 well.
Annual water quality report
Sunset Colony Unapproved 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 Sunset Colony Unapproved 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