COHASSET WATER DEPT
Massachusetts — Community Water System — PWSID: MA4065000
System Information
| PWSID | MA4065000 |
| System Name | COHASSET WATER DEPT |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Feb 26, 1979 |
| Last Reported | Dec 17, 2025 |
Location & Contact
| State | Massachusetts |
| City | COHASSET |
| ZIP Code | 02025 |
| Address | 339 KING ST |
| Organization | COHASSET WATER DEPT |
| Phone | 7813830057 |
Population & Service
| Population Served | 7,555 |
| Service Connections | 2,692 |
Drinking Water Violations (14)
This water system has 14 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2021 | Jun 30, 2021 | Picloram | MR | No | No | — | 0.5 mg/L | — | Archived | Jun 30, 2021 | Synthetic Organic Chemicals |
| Apr 1, 2021 | Jun 30, 2021 | Endothall | MR | No | No | — | 0.1 mg/L | — | Archived | Jun 30, 2021 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | 2,4,5-TP | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | 2,4,5-TP | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | Methoxychlor | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | Methoxychlor | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | BHC-GAMMA | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | BHC-GAMMA | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | Endrin | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | Endrin | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | Toxaphene | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | Toxaphene | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | 2,4-D | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
| Oct 1, 1991 | Dec 31, 1991 | 2,4-D | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 1991 | Synthetic Organic Chemicals |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.