PFAS in tap water, Bristol County, Massachusetts
8 of 18 water systems had PFAS-4 above our 0.5 ng/L benchmark at the latest sample. Highest: Raynham Center Water District, 92 ng/L. 10 had PFOA or PFOS above the 4 ng/L federal MCL in at least one sample.
18 community water systems · 624,680 people served · newest sample January 12, 2026
Water systems in Bristol County
| Water system | People served | PFAS-4 at the latest sample | Entry points | Latest sample |
|---|---|---|---|---|
| Inima USA / Aquaria LLC | 105,643 | below the 3 to 4 ng/L reporting limit | 1 | April 28, 2025 |
| City of New Bedford Dpi | 101,079 | below the 3 to 4 ng/L reporting limit | 1 | November 6, 2024 |
| Fall River Water Department | 94,000 | below the 3 to 4 ng/L reporting limit | 1 | October 29, 2024 |
| Taunton Water Division | 62,165 | below the 3 to 4 ng/L reporting limit | 1 | March 11, 2024 |
| Attleboro Water Dept | 46,461 | below the 3 to 4 ng/L reporting limit above the 2029 federal MCL in an earlier sample | 2 | January 12, 2026 |
| North Attleboro Water Dept | 31,410 | 20 ng/L above the 2029 federal MCL | 4 | October 17, 2024 |
| Easton Water Div | 25,058 | below the 3 to 4 ng/L reporting limit above the 2029 federal MCL in an earlier sample | 4 | August 6, 2024 |
| Dartmouth Water Division | 24,696 | 50.6 ng/L above the 2029 federal MCL | 4 | December 10, 2024 |
| Mansfield Water Division | 21,797 | 13.6 ng/L above the 2029 federal MCL | 3 | September 17, 2025 |
| Norton Water Department | 19,161 | 8.8 ng/L above the 2029 federal MCL | 3 | February 7, 2024 |
| Somerset Water Department | 18,303 | below the 3 to 4 ng/L reporting limit | 1 | September 15, 2025 |
| Swansea Water District | 17,375 | 7.7 ng/L above the 2029 federal MCL | 4 | August 5, 2024 |
| Fairhaven Water Dept | 15,155 | below the 3 to 4 ng/L reporting limit | 1 | April 25, 2023 |
| Seekonk Water District | 13,801 | 5 ng/L above the 2029 federal MCL | 1 | September 9, 2024 |
| Raynham Center Water District | 10,964 | 92 ng/L above the 2029 federal MCL | 3 | August 11, 2025 |
| Acushnet Water Department | 8,430 | below the 3 to 4 ng/L reporting limit | 1 | November 5, 2024 |
| Dighton Water District | 5,280 | 9.6 ng/L above the 2029 federal MCL | 1 | October 7, 2024 |
| North Raynham Water District | 3,902 | below the 3 to 4 ng/L reporting limit | 2 | December 3, 2024 |
Not sure which one is yours? The systems report their own service areas to EPA. Check your water bill or your utility's Consumer Confidence Report.
Cities and towns
ZIP codes in Bristol County
Census ZIP code tabulation areas that overlap the county. A ZIP served by one system opens that system's page; a ZIP shared by several systems lists them.
How to read these numbers
We compare PFAS-4 (PFOA + PFOS + PFNA + PFHxS) with this site's 0.5 ng/L benchmark, the same line as on the European pages. UCMR 5 reporting limits are 3 to 4 ng/L. So any quantified PFAS-4 compound is above the benchmark, and a clean result reads "below the 3 to 4 ng/L reporting limit", never zero. The US legal limit is the 4 ng/L federal MCL for PFOA and PFOS, which systems must meet from April 26, 2029 ("above the 2029 federal MCL").
EPA: "UCMR 5 results do not indicate compliance or noncompliance with the PFAS drinking water standards". Samples are taken where water enters the distribution system, not at your tap. A system may have changed sources or added treatment since. Source: U.S. Environmental Protection Agency (EPA), Office of Water, PFAS National Primary Drinking Water Regulation (NPDWR). Regulation details retrieved September 19, 2026. Every system page tracks the 2029 compliance date and the proposed rescission of the PFHxS, PFNA, HFPO-DA and Hazard Index limits.
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.