Norfolk County tap water
18 of 27 water systems serving Norfolk County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 39 community water systems list this county as served; 26 serve 3,300+ people with full PFAS testing.
- 4 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 |
|---|---|---|---|---|
| Quincy Water dept. (Mwra) | Purchased surface water | 106,000 | No | 0 |
| Brookline Water and Sewer Division | Purchased surface water | 63,191 | No | 0 |
| Weymouth Water department | Surface water | 57,871 | No | 0 |
| Dedham Westwood Water Dist. | Purchased surface water | 41,630 | Yes | 0 |
| Braintree Water and Sewer dept. | Surface water | 39,143 | Yes | 0 |
| Randolph Water department | Purchased surface water | 35,114 | Yes | 0 |
| Franklin Water department | Groundwater | 33,706 | Yes | 0 |
| Needham Water dept | Purchased surface water | 31,664 | Yes | 0 |
| Norwood Water dept. (Mwra) | Purchased surface water | 29,909 | No | 0 |
| Wellesley Water Division | Purchased surface water | 29,550 | Yes | 0 |
| Stoughton Water department | Purchased surface water | 29,281 | Yes | 0 |
| Milton Water dept. (Mwra) | Purchased surface water | 28,630 | 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.