Worcester County tap water
9 of 43 water systems serving Worcester County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 110 community water systems list this county as served; 42 serve 3,300+ people with full PFAS testing.
- 10 had a health-based violation since 2021-10-26.
Largest systems serving this county
| System | Source | People served (whole system) | PFAS above a 2024 level? | Violations since 2021-10-26 |
|---|---|---|---|---|
| Worcester Dpwp, Water Supply Division | Surface water | 206,518 | No | 0 |
| Fitchburg Dpw Division of Water Supply | Surface water | 41,946 | No | 0 |
| Leominster Water Division | Surface water | 41,683 | No | 0 |
| Shrewsbury Water department | Groundwater | 38,325 | No | 0 |
| Milford Water department | Surface water | 30,379 | Yes | 0 |
| Westborough Water department | Surface water | 21,567 | No | 1 |
| Gardner Water department | Surface water | 21,381 | No | 1 |
| Southbridge Water department | Surface water | 19,562 | No | 0 |
| Holden Water Division, Dpw | Purchased surface water | 18,016 | Yes | 0 |
| Webster Water department | Groundwater | 17,776 | No | 0 |
| Clinton Water dept | Surface water | 15,428 | No | 1 |
| Northborough Water department (Mwra) | Purchased surface water | 13,551 | No | 0 |
Which one is yours? A county usually has several utilities. Your bill or your utility's annual water-quality report names yours. Population is for the whole system, which can cross county lines.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.