CHESTER WATER DEPT
PWS ID: MA1059000 · CHESTER, Massachusetts 01011
Population Served
750
Total Violations
226
Health-Based Violations
26
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 250
- County
- Hampden
- School/Daycare
- No
- MCL Violations
- 22
- Monitoring Violations
- 159
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 21 | 2020 |
| Consumer Confidence Rule | Other | 8 | 2017 |
| Total Haloacetic Acids (HAA5) | MR | 7 | 2019 |
| Lead and Copper Rule | MR | 5 | 2023 |
| Nitrate | MR | 4 | 1995 |
| Arsenic | MR | 3 | 2005 |
| Public Notice | Other | 3 | 2010 |
| TTHM | MR | 3 | 2019 |
| LASSO | MR | 3 | 2019 |
| Carbofuran | MR | 3 | 2019 |
| Chlordane | MR | 3 | 2019 |
| 2,4-D | MR | 3 | 2019 |
| Endrin | MR | 3 | 2019 |
| ETHYLENE DIBROMIDE | MR | 3 | 2019 |
| Heptachlor epoxide | MR | 3 | 2019 |
| Heptachlor | MR | 3 | 2019 |
| Pentachlorophenol | MR | 3 | 2019 |
| Toxaphene | MR | 3 | 2019 |
| 2,4,5-TP | MR | 3 | 2019 |
| BHC-GAMMA | MR | 3 | 2019 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 3 | 2019 |
| Dalapon | MR | 3 | 2019 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2019 |
| Di(2-ethylhexyl) phthalate | MR | 3 | 2019 |
| Endothall | MR | 3 | 2019 |
| OXAMYL | MR | 3 | 2019 |
| Simazine | MR | 3 | 2019 |
| 2,3,7,8-TCDD | MR | 3 | 2019 |
| Surface Water Treatment Rule | TT | 3 | 1992 |
| Picloram | MR | 3 | 2019 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.