Colchester Sewer & Water Commission
PWSID: CT0280011
System Details
| Population Served | 4,020 |
| Service Connections | 2,100 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Colchester |
| Zip Code | 06415 |
Areas Served
- Colchester, New London County
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0032 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0020 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0019 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0018 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0012 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0012 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0002 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
Violation History (40 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2025-08-10 | | Returned to Compliance |
| | 2025-07-01 | | Returned to Compliance |
| | 2025-06-15 | | Returned to Compliance |
| | 2025-06-15 | | Returned to Compliance |
| | 2024-05-25 | | Returned to Compliance |
| | 2024-03-01 | Major | Returned to Compliance |
| | 2024-03-01 | Major | Returned to Compliance |
| | 2024-03-01 | Major | Returned to Compliance |
| | 2024-03-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Returned to Compliance |
| | 2024-01-01 | Major | Returned to Compliance |
| | 2024-01-01 | Major | Returned to Compliance |
| | 2024-01-01 | Major | Returned to Compliance |
| | 2024-01-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Acknowledged |
| | 2023-07-01 | | Returned to Compliance |
| | 2023-07-01 | | Returned to Compliance |
| | 2022-10-01 | Major | Returned to Compliance |
| | 2022-10-01 | Major | Returned to Compliance |
| | 2022-10-01 | Major | Returned to Compliance |
| | 2022-10-01 | Major | Returned to Compliance |
| | 2022-10-01 | Major | Returned to Compliance |
| | 2021-07-01 | | Returned to Compliance |
| | 2020-02-27 | | Returned to Compliance |
| | 2020-02-26 | | Returned to Compliance |
| | 2019-10-01 | Major | Returned to Compliance |
| | 2019-03-01 | Major | Returned to Compliance |
| | 2018-12-01 | Major | Returned to Compliance |
| | 2018-12-01 | Major | Returned to Compliance |
| | 2018-12-01 | Major | Returned to Compliance |
| | 2018-12-01 | Major | Returned to Compliance |
| | 2018-10-01 | Major | Returned to Compliance |
| | 2016-04-01 | Major | Returned to Compliance |
| | 2012-01-01 | Major | Acknowledged |
| | 2007-07-01 | | Returned to Compliance |
| | 1993-01-01 | | Returned to Compliance |