- EPA's UCMR 5 testing looked for 30 contaminants here and found 5.
- PFPeA (a PFAS): found in 3 of 4 samples, average 4.9 ppt, highest 8 ppt (EPA UCMR 5 testing, Nov 2024–Aug 2025)
- PFHxA (a PFAS): found in 3 of 4 samples, average 4 ppt, highest 6.1 ppt (EPA UCMR 5 testing, Nov 2024–Aug 2025)
Public EPA test results
What EPA records show for Billerica Water Works
EPA MA3031000 · serves Billerica, MA · about 42,119 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Billerica Water Works (EPA MA3031000)
What EPA records show for Billerica Water Works, as of October 14, 2026
3 health-based violations since July 1, 2021 in EPA records (EPA SDWIS).
Lead, 90th percentile: 2.4 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2023–Dec 31, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 5.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Billerica Water Works use chloramine?
EPA treatment records (state-reported) list chloramines for Billerica Water Works. EPA record
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)