COLCHESTER SEWER & WATER COMMISSION Water Quality Report
Population
4,020
people served
Water Source
🏔️ Ground
wells & aquifers
National Rank
Top 90%
of 49,184 US systems
5-Year Record
⚠️ 27
violations recorded
C
Fair
Safety Grade
27 violations in the past 5 years
System Details
- PWSID
- CT0280011
- Population Served
- 4,020
- Water Source
- Ground Water
- Owner
- Local Government
- State
- Connecticut
- EPA Region
- 1
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 7000 | ⚠ Monitoring/Reporting | 6 |
| Contaminant 5000 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 0999 | ⚠ Monitoring/Reporting | 8 |
| Total Coliform | ⚠ Monitoring/Reporting | 12 |
| Contaminant 8000 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 7500 | ⚠ Monitoring/Reporting | 5 |
| Contaminant 1094 | ⚠ Monitoring/Reporting | 1 |
| Total Trihalomethanes (TTHMs) | ⚠ Monitoring/Reporting | 3 |
| Haloacetic Acids (HAA5) | ⚠ Monitoring/Reporting | 3 |
Violation History
2025
4
2024
15
2023
2
2022
5
2021
1
2020
2
2019
2
2018
5
2016
1
2012
1
Total violations on record: 40
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
UV Water Purifier
Kills bacteria and viruses without chemicals
Removes: Total Coliform
How does this compare?
This systemNational average
Grade C
Avg: B-C
40violations total
143% of national average
National avg: ~28 per system
📍 Average-sized water system.