Water quality in Chelsea, Massachusetts
Chelsea is in Suffolk County. 9 active public water systems serve the county; 3 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Suffolk County
4 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Revere Water Division (mwra) Revere |
62,186 | 1 | 2.2 mi | |
| Winthrop Water Division, (mwra) Winthrop |
19,316 | 1 | 3.0 mi | |
| Mwra Boston |
2,580,000 | 0 | 4.1 mi | |
| Boston Water and Sewer Commission (mwra) Boston |
675,647 | 1 | 6.3 mi |
Non-community systems in Suffolk County (4: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Rocky MT Sprg @ Supreme Liq Boston Vnd Boston |
400 | 0 | 0 | |
|
Deer Island (mwra) Boston |
350 | 0 | 0 | |
|
Rocky MT Spring @ Roslindale Plaza Vnd Boston |
25 | 0 | 0 | |
|
Rocky Mountain Spring Water Vending Boston |
25 | 0 | 0 |
About this data
Water systems are matched to Suffolk County, nearest to Chelsea first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the first town EPA lists the system as serving, from Census Bureau place files or, for systems without one, to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Massachusetts records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.