Public water system record
Ten Mile and Pleasant Valley WUA
Serves Helena and Helena Valley West Central, Lewis and Clark County, MT · 750 people served
Federal records show 1 health-based violation and 28 monitoring/reporting issues for Ten Mile and Pleasant Valley WUA in the last ten years. The most serious issue in this window was a resolved Lead and Copper Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 28
Key facts
- Ten Mile and Pleasant Valley WUA draws water from 2 wells.
- Record on file since 1996, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 305 service lines.
Check whether Ten Mile and Pleasant Valley WUA 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Lead and Copper Rule
Treatment technique failure
|
350 | Apr 1, 2024 | Resolved | No |
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
|
Jan 1, 2026 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2022 | Resolved |
|
Styrene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Toluene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Benzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2021 | Resolved |
Full record since 1996
EPA's records for Ten Mile and Pleasant Valley WUA go back to 1996. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 125 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 1 |
| 2000s | 0 | 76 |
| 2010 to October 18, 2016 | 1 | 48 |
| 2020s | 1 | 28 |
Most recent health-based violation before October 19, 2016: Total Coliform, began May 2014, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2014 | Resolved |
What the violations mean
Lead and Copper Rule
1 incidentThe system did not complete a treatment step or action that the Lead and Copper Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Ten Mile and Pleasant Valley WUA draws water from 2 wells.
Annual water quality report
Ten Mile and Pleasant Valley WUA 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