Water Quality: Chelsea, MA
2 water systems • 2,698,319 people served
Multiple Health ViolationsWater Quality Summary
Chelsea is served by 2 public water systems with a combined service population of 2,698,319 people, and has 10 EPA Safe Drinking Water Act violations on record. Critically, 7 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Chelsea's violation count is 69% below the national average for Massachusetts. Contaminants associated with violations include Disinfection Byproducts.
Contaminants Found
Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.
Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter
Water Systems Serving Chelsea
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| MWRA | MA6000000 | Surface Water | 2,660,000 | 0 |
| CHELSEA WATER DEPT. (MWRA) | MA3057000 | Surface Water | 38,319 | 10 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Massachusetts
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.