Public water system record
Montville Water Supply
Serves an area of Southeastern Connecticut Planning Region, CT that includes Oxoboxo River and Gales Ferry · 1,300 people served
Federal records show no health-based violations and 1 monitoring/reporting issue for Montville Water Supply 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
- Montville Water Supply buys its water from Groton Utilities and Ledyard Wpca, Gales Ferry System.
- Most recent formal enforcement: compliance order (no penalty) by Connecticut, March 2017.
- Record on file since 1996, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 616 service lines.
Check whether Montville Water Supply 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
|
Oct 1, 2017 | Resolved |
Full record since 1996
EPA's records for Montville Water Supply go back to 1996. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 25 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 3 |
| 2000s | 0 | 15 |
| 2010 to October 18, 2016 | 3 | 7 |
| October 19, 2016 to 2019 | 0 | 1 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began January 2016, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jan 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jul 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jan 1, 2015 | Resolved |
Enforcement actions
Connecticut regulators took 4 formal enforcement actions against Montville Water Supply between 1997 and 2017. The most recent was a compliance order (no penalty) in March 2017.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 24, 2017 | Connecticut | Compliance order (no penalty) | 3 violations (3 health-based): Total Trihalomethanes (TTHMs) |
| Oct 23, 2003 | Connecticut | Compliance order with a penalty | 1 violation: Total Coliform |
| Dec 3, 1999 | Connecticut | Compliance order with a penalty | 1 violation: Lead and Copper Rule |
| Jan 6, 1997 | Connecticut | Signed compliance agreement | 1 violation: Lead and Copper Rule |
Where the water comes from
Montville Water Supply buys its water from Groton Utilities and Ledyard Wpca, Gales Ferry System. It lists no wells or intakes of its own. It also has emergency connections to Waterford Wpca and Norwich Public Utilities. 1 other community water system buys water from Montville Water Supply. 2 other public water systems have emergency connections to Montville Water Supply.
Buys water from
- Groton Utilities Groton, CT
- Ledyard Wpca, Gales Ferry System Ledyard, CT
Emergency or part-time connections to
- Waterford Wpca Waterford, CT
- Norwich Public Utilities Norwich, CT
Community systems that buy water from it
- Scwa, Hillcrest Division (HLC) Gales Ferry, CT
Annual water quality report
Montville Water Supply 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 Connecticut.
Certified drinking water labs by state EPA guidance for private wells