Water Quality: Leominster, MA
2 water systems • 41,808 people served
Multiple Health ViolationsWater Quality Summary
Leominster is served by 2 public water systems with a combined service population of 41,808 people, and has 15 EPA Safe Drinking Water Act violations on record. Critically, 5 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Leominster's violation count is 53% below the national average for Massachusetts. Contaminants associated with violations include Disinfection Byproducts, Total Haloacetic Acids (HAA5).
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
Haloacetic acids are associated with increased cancer risk and potential reproductive and developmental effects.
Common source: Reaction of chlorine disinfectants with organic matter in treated water
EPA limit: 0.060 mg/L (60 ppb)
Water Systems Serving Leominster
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| LEOMINSTER WATER DIVISION | MA2153000 | Surface Water | 41,683 | 11 |
| WOODLAND RIDGE | MA2270009 | Groundwater | 125 | 4 |
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.