Public water system record
Yellowtail Dam GC System
On record as serving Hardin, Big Horn County, MT · Serves 125 people
Federal records show no health-based violations and 3 monitoring/reporting issues for Yellowtail Dam GC System 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
- 3
Key facts
- Yellowtail Dam GC System draws water from 2 wells.
- Record on file since 1981, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 1 unknown out of 52 service lines.
Check whether Yellowtail Dam GC System 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 |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 1981
EPA's records for Yellowtail Dam GC System go back to 1981. Before October 19, 2016 they list no health-based violations and 88 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 16 |
| 1990s | 0 | 3 |
| 2000s | 0 | 63 |
| 2010 to October 18, 2016 | 0 | 6 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 0 | 2 |
Where the water comes from
Yellowtail Dam GC System draws water from 2 wells.
Annual water quality report
Yellowtail Dam GC System 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 Yellowtail Dam GC System 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