Public water system record
Rockport Colony
Serves Pendroy, Teton County, MT · 92 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Rockport Colony in the last ten years. The most serious issue in this window was a resolved Nitrate-Nitrite violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 2
Key facts
- Rockport Colony draws water from 2 wells.
- Most recent formal enforcement: compliance order (no penalty) by Montana, October 2018.
- Record on file since 1981, with 7 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 8 service lines.
Check whether Rockport Colony 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 |
|---|---|---|---|---|
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2018 | Resolved | Yes |
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, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Dec 30, 2017 | Resolved |
Full record since 1981
EPA's records for Rockport Colony go back to 1981. Before October 19, 2016 they list 7 health-based violations (6 resolved, 1 archived by EPA without a recorded fix) and 53 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 0 |
| 1990s | 0 | 4 |
| 2000s | 1 | 1 |
| 2010 to October 18, 2016 | 5 | 48 |
| October 19, 2016 to 2019 | 1 | 1 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Arsenic, began April 2012, Resolved.
Show all 7 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.018 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
|
Apr 1, 2012 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.02 mg/L, federal limit 0.01 mg/L (2 times the limit)
|
Jan 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.017 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
|
Oct 1, 2011 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
|
Jul 1, 2011 | Resolved |
|
Mercury
Contaminant limit exceeded
Measured 0.0028 mg/L, federal limit 0.002 mg/L (1.4 times the limit)
|
Jan 1, 2002 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jun 16, 1981 | Archived |
Enforcement actions
Montana regulators took 2 formal enforcement actions against Rockport Colony between 2012 and 2018. The most recent was a compliance order (no penalty) in October 2018.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 25, 2018 | Montana | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Sep 5, 2012 | Montana | Compliance order with a penalty | 5 violations (4 health-based): Arsenic, Lead and Copper Rule |
What the violations mean
Nitrate-Nitrite
1 incidentTest results for Nitrate-Nitrite were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
Rockport Colony draws water from 2 wells.
Annual water quality report
Rockport Colony 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 Rockport Colony 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