Is Leominster, MA tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for Leominster Water Division. 1 PFAS were detected below the limits.
Leominster Water Division supplies Leominster (41,683 people).
Water system
Leominster Water Division
41,683 people · Surface water · EPA ID MA2153000
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA One sample above limit | 2.15 ppt | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 2.8 ppb at the 90th percentile (Dec 2025, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 2
Across Massachusetts, 75 of 261 water systems EPA tested had PFAS above a 2024 federal limit, and 8 systems were above the lead action level in results from the last five years. Massachusetts results.
Leominster homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Leominster city (tables B25034, B25003). Estimates for small places have a margin of error.
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Fitchburg 6 mi Fitchburg Dept. of Public Works Division of Water Supply | None above limits | 5 ppb |
| Marlborough 16 mi Marlborough Dept. of Public Works Water Division (MWRA) | None above limits | 1.2 ppb |
| Shrewsbury 17 mi Shrewsbury Water Department | None above limits | 0 ppb |
| Worcester 17 mi Worcester DPW&P Water Supply Division | None above limits | 2 ppb |
| Chelmsford 21 mi Chelmsford Water District | Above limit | 2.4 ppb |
| Framingham 22 mi Framingham Water Dept. (MWRA) | None above limits | 1.6 ppb |
Leominster ZIP codes (1)
- 01453
Questions
Is Leominster tap water safe to drink?
Leominster Water Division had 2 health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in Leominster, MA?
Leominster Water Division, which serves 41,683 people.
Does Leominster tap water have PFAS?
Leominster Water Division had 1 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.
Do Leominster homes have lead pipes?
Census estimates put 64% of Leominster homes as built before 1980 (Massachusetts: 67%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Leominster Water Division's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.