PFAS in Massachusetts drinking water
EPA's final UCMR 5 data covers 263 public water systems in Massachusetts, serving about 7.1 million people. PFAS turned up in 144 of them (55%). 80 averaged above at least one EPA limit at a sampling point, affecting about 1.4 million people.
Highest PFOA and PFOS averages among systems serving 1,000 or more: Raynham Center Water District (48.6 / 0.0 ppt), Natick Water Department (12.0 / 32.2 ppt), Duxbury Water Department (6.3 / 34.7 ppt), Dartmouth Water Division (2.1 / 25.3 ppt) and Norwell Water Department (8.6 / 12.9 ppt).
Every tested system in Massachusetts
Largest first. PFOA and PFOS columns show the average at each system's worst sampling point; EPA's limit for each is 4 ppt. Filter by name:
| Water system | People | PFOA | PFOS | PFAS found | Result |
|---|---|---|---|---|---|
| Boston Water and Sewer Commission (mwra) · Boston | 675,647 | - | - | 0 | None found |
| Worcester Dpwp, Water Supply Division · Worcester | 206,518 | - | - | 1 | Below limits |
| Springfield Water and Sewer Commission · Springfield | 169,170 | - | - | 0 | None found |
| Lowell Regional Water Utility · Lowell | 120,418 | 1.1 | - | 3 | Sample at limit |
| Cambridge Water Department · Cambridge | 118,214 | 1.2 | - | 3 | Sample at limit |
| Quincy Water Dept. (mwra) · Quincy | 106,000 | - | - | 0 | None found |
| Brockton Water Department · Brockton | 105,788 | - | - | 0 | None found |
| Inima Usa / Aquaria LLC · North Dighton | 105,643 | - | - | 0 | None found |
| Lynn Water and Sewer Comm · Lynn | 101,253 | 2.2 | - | 5 | Sample at limit |
| City of New Bedford Dpi · New Bedford | 101,079 | - | - | 1 | Below limits |
| Falmouth Water Dept · Falmouth | 97,551 | - | - | 0 | None found |
| Fall River Water Department · Fall River | 94,000 | - | - | 0 | None found |
| Lawrence Water Works · Lawrence | 89,143 | - | - | 2 | Below limits |
| Newton Water Dept. (mwra) · Newton | 88,931 | - | - | 0 | None found |
| Somerville Water Dept. (mwra) · Somerville | 81,045 | - | - | 0 | None found |
| Framingham Water Dept. (mwra) · Framingham | 72,362 | - | - | 0 | None found |
| Malden Water Division (mwra) · Malden | 66,263 | - | - | 0 | None found |
| Waltham Water Department · Waltham | 65,218 | - | - | 0 | None found |
| Dennis Water District · South Dennis | 65,000 | - | - | 2 | Below limits |
| Brookline Water and Sewer Division · Brookline | 63,191 | - | - | 0 | None found |
| Revere Water Division (mwra) · Revere | 62,186 | - | - | 1 | Below limits |
| Taunton Water Division · Taunton | 62,165 | - | - | 0 | None found |
| Medford Water Dept. (mwra) · Medford | 61,700 | - | - | 0 | None found |
| Haverhill Water Dept · Haverhill | 61,277 | - | - | 0 | None found |
| Weymouth Water Department · Weymouth | 57,871 | - | - | 1 | Below limits |
| Upper Cape Regional Water Cooperative · Sandwich | 56,250 | - | - | 0 | None found |
| Chicopee Water Dept (mwra) · Chicopee | 55,560 | - | - | 0 | None found |
| Peabody Water Dept. · West Peabody | 54,481 | 6.4 | - | 5 | Above limit |
| Methuen Water Dept · Methuen | 53,059 | 1.0 | - | 3 | Sample at limit |
| Centerville Osterville Marstons Mills WD · Osterville | 50,000 | 4.8 | - | 5 | Above limit |
| Everett Water Dept. (mwra) · Everett | 49,075 | - | - | 0 | None found |
| Beverly Water Dept · Beverly | 47,461 | - | - | 2 | Below limits |
| Plymouth Water Department · Plymouth | 47,100 | - | - | 2 | Below limits |
| Attleboro Water Dept · Attleboro | 46,461 | 2.9 | 4.7 | 5 | Above limit |
| Arlington Water Dept. (mwra) · Arlington | 46,308 | - | - | 0 | None found |
| Weir River Water System · Hingham | 45,339 | 3.7 | - | 5 | Sample at limit |
| Salem Water Department · Salem | 44,480 | - | - | 2 | Below limits |
| Pittsfield Dpu Water Dept · Pittsfield | 43,927 | - | - | 0 | None found |
| Billerica Water Works · Billerica | 42,119 | 2.4 | - | 5 | Sample at limit |
| Fitchburg Dpw, Div. of Water Supply · Fitchburg | 41,946 | 1.2 | - | 3 | Sample at limit |
| Marlborough Dpw Water Div. (mwra) · Marlborough | 41,799 | - | - | 0 | None found |
| Leominster Water Division · Leominster | 41,683 | 2.1 | - | 1 | Sample at limit |
| Dedham Westwood Water Dist. · Dedham | 41,630 | 6.2 | 5.1 | 4 | Above limit |
| Westfield Water Dept · Westfield | 41,094 | - | - | 1 | Below limits |
| Woburn Water Dept. · Woburn | 40,876 | 7.2 | 6.4 | 6 | Above limit |
| Chelsea Water Dept. (mwra) · Chelsea | 40,787 | - | - | 0 | None found |
| Amherst Dpw Water Division · Amherst | 39,263 | - | - | 0 | None found |
| Harwich Water Department · Harwich | 39,144 | - | - | 0 | None found |
| Braintree Water and Sewer Dept. · Braintree | 39,143 | 4.7 | 7.6 | 5 | Above limit |
| Yarmouth Water Department · West Yarmouth | 38,900 | - | - | 5 | Below limits |
| Shrewsbury Water Department · Shrewsbury | 38,325 | 2.7 | 2.8 | 5 | Sample at limit |
| Holyoke Water Works · Holyoke | 37,838 | - | - | 0 | None found |
| Gloucester Public Utility Division · Gloucester | 37,440 | - | - | 0 | None found |
| Natick Water Department · Natick | 37,006 | 12.0 | 32.2 | 6 | Above limit |
| Mashpee Water District · Mashpee | 36,922 | - | - | 1 | Below limits |
| Andover Water Dept · Andover | 36,569 | - | - | 1 | Below limits |
| Watertown Water Dept. (mwra) · Watertown | 35,985 | - | - | 0 | None found |
| Randolph Water Department · Randolph | 35,114 | 6.9 | 11.0 | 6 | Above limit |
| Hyannis Water System, Town of Barnstable · Hyannis | 35,000 | - | - | 3 | Below limits |
| Brewster Water Department · Brewster | 35,000 | - | - | 0 | None found |
| Lexington Water Dept. (mwra) · Lexington | 34,074 | - | - | 0 | None found |
| Marshfield Water Department · Marshfield | 34,000 | 6.9 | 2.3 | 7 | Above limit |
| Franklin Water Department · Franklin | 33,706 | 4.4 | 2.8 | 5 | Above limit |
| Abington/rockland Joint Wtr. Works · Rockland | 33,387 | 11.5 | 7.0 | 8 | Above limit |
| Needham Water Dept · Needham | 31,664 | 4.3 | 2.5 | 2 | Above limit |
| North Attleboro Water Dept · North Attleborough | 31,410 | 8.5 | 6.5 | 8 | Above limit |
| Tewksbury Water Department · Tewksbury | 31,342 | 3.5 | - | 3 | Sample at limit |
| North Andover Water Dept · North Andover | 30,915 | - | - | 0 | None found |
| Milford Water Company · Milford | 30,379 | 6.6 | 6.3 | 5 | Above limit |
| Chatham Water Department · Chatham | 30,000 | - | - | 0 | None found |
| Melrose Water Division (mwra) · Melrose | 29,938 | - | - | 0 | None found |
| Norwood Water Dept. (mwra) · Norwood | 29,909 | - | - | 0 | None found |
| Mattapoisett River Valley W.d. · Mattapoisett | 29,600 | - | - | 0 | None found |
| Northampton Water Dept · Northampton | 29,571 | - | - | 0 | None found |
| Wellesley Water Division · Wellesley | 29,550 | 5.7 | 6.5 | 6 | Above limit |
| Stoughton Water Department · Stoughton | 29,281 | 7.5 | 6.7 | 5 | Above limit |
| West Springfield Dpw Water Division · West Springfield | 28,835 | - | - | 0 | None found |
| Chelmsford Water District · Chelmsford | 28,750 | 7.5 | 5.7 | 5 | Above limit |
| Agawam Water Department · Agawam | 28,692 | - | - | 0 | None found |
| Bridgewater Water Department · Bridgewater | 28,633 | 9.0 | 7.0 | 7 | Above limit |
| Milton Water Dept. (mwra) · Milton | 28,630 | - | - | 0 | None found |
| Danvers Water Dept. · Middleton | 28,087 | - | 5.2 | 1 | Above limit |
| Saugus Water Dept. (mwra) · Saugus | 27,844 | - | - | 0 | None found |
| Wannacomet Water Company · Nantucket | 27,703 | - | - | 0 | None found |
| Belmont Water Dept. (mwra) · Belmont | 27,442 | - | - | 0 | None found |
| Wakefield Water Dept · Wakefield | 27,090 | 4.2 | - | 3 | Above limit |
| Reading Water Department · Reading | 26,262 | - | - | 0 | None found |
| Burlington Water Dept · Burlington | 25,864 | - | - | 1 | Below limits |
| Dracut Water Supply District · Collinsville | 25,808 | 5.4 | - | 3 | Above limit |
| Easton Water Div · South Easton | 25,058 | 5.0 | 8.1 | 6 | Above limit |
| Dartmouth Water Division · Dartmouth | 24,696 | 2.1 | 25.3 | 7 | Above limit |
| Walpole Water Dept · Walpole | 24,070 | 4.0 | 4.0 | 6 | Above limit |
| Oak Bluffs Water District · Oak Bluffs | 24,000 | - | - | 2 | Below limits |
| Stoneham Water Dept (mwra Supply) · Stoneham | 23,244 | - | - | 0 | None found |
| Sandwich Water District · Sandwich | 23,000 | - | - | 0 | None found |
| Winchester Water Dept · Winchester | 22,970 | - | - | 0 | None found |
| Canton Water Dept · Canton | 22,766 | 4.9 | - | 4 | Above limit |
| Bourne Water District · Pocasset | 22,500 | - | 4.8 | 3 | Above limit |
| Provincetown Water Department · Provincetown | 22,250 | - | - | 0 | None found |
| Mansfield Water Division · Mansfield | 21,797 | 2.1 | 3.1 | 4 | Sample at limit |
| Wilmington Water Dept · Wilmington | 21,654 | - | - | 2 | Below limits |
| Westborough Water Department · Westborough | 21,567 | 2.9 | 3.8 | 3 | Sample at limit |
| Gardner Water Department · Gardner | 21,381 | - | - | 0 | None found |
| Acton Water Supply District · Acton | 21,285 | 11.6 | 4.5 | 8 | Above limit |
| Marblehead Water Dept. (mwra) · Marblehead | 20,441 | - | - | 0 | None found |
| Newburyport Water Department · Newburyport | 20,335 | - | 1.1 | 2 | Sample at limit |
| Wareham Fire District · Parkwood Beach | 20,102 | - | - | 0 | None found |
| Hudson Water Supply · Hudson | 20,032 | - | - | 1 | Below limits |
| Southbridge Water Department · Southbridge | 19,562 | - | - | 1 | Below limits |
| Winthrop Water Division, (mwra) · Winthrop | 19,316 | - | - | 0 | None found |
| Scituate Water Division · Scituate | 19,297 | 5.5 | 5.2 | 4 | Above limit |
| Norton Water Department · Norton | 19,161 | 8.7 | 2.0 | 7 | Above limit |
| Westford Water Department · Westford | 18,848 | 8.5 | 2.9 | 5 | Above limit |
| Ashland Water & Sewer Dept. · Ashland | 18,832 | - | - | 1 | Below limits |
| Concord Water Dept · Concord | 18,788 | 5.9 | - | 4 | Above limit |
| Foxboro Water Department · Foxborough | 18,721 | 5.8 | 6.4 | 5 | Above limit |
| Sudbury Water District · Sudbury | 18,416 | 8.5 | - | 6 | Above limit |
| Somerset Water Department · Somerset | 18,303 | - | - | 0 | None found |
| Pembroke Water Division Dpw · Pembroke | 18,175 | - | - | 2 | Below limits |
| Holden Water Division, Dpw · Holden | 18,016 | 4.2 | - | 5 | Above limit |
| Webster Water Department · Webster | 17,776 | 2.2 | - | 3 | Sample at limit |
| Greenfield Water Department · Greenfield | 17,768 | - | - | 0 | None found |
| Orleans Water Department · Orleans | 17,460 | - | - | 0 | None found |
| Swansea Water District · Swansea | 17,375 | 2.4 | - | 6 | Sample at limit |
| Amesbury Dpw Water Div. · Amesbury | 17,366 | - | - | 0 | None found |
| Sharon Water Dept · Sharon | 16,846 | 7.0 | 11.3 | 6 | Above limit |
| Bellingham Dpw Water Sewer Div. · Bellingham | 16,556 | 2.1 | 2.5 | 3 | Sample at limit |
| Duxbury Water Department · Duxbury | 16,387 | 6.3 | 34.7 | 10 | Above limit |
| North Reading Water Dept. · North Reading | 16,379 | - | - | 3 | Below limits |
| East Longmeadow Dpw Water Dept · East Longmeadow | 16,358 | - | - | 0 | None found |
| Easthampton Water Dept · Easthampton | 16,211 | - | - | 0 | None found |
| Longmeadow Water Dept · Longmeadow | 15,853 | - | - | 0 | None found |
| Clinton Water Dept · Clinton | 15,428 | - | - | 0 | None found |
| Middleborough Water Supply · Middleborough | 15,350 | 9.5 | 4.5 | 8 | Above limit |
| Swampscott Water Dept. (mwra) · Swampscott | 15,300 | - | - | 0 | None found |
| Fairhaven Water Dept · Fairhaven | 15,155 | - | - | 0 | None found |
| Holliston Water Department · Holliston | 15,139 | 5.1 | 5.9 | 5 | Above limit |
| Hanover Water Dept · Hanover | 14,984 | 5.3 | 7.9 | 7 | Above limit |
| Bedford Water Dept. · Bedford | 14,955 | - | - | 0 | None found |
| Whitman Water System · Whitman | 14,947 | - | - | 4 | Below limits |
| South Hadley Fd #1 (mwra) · South Hadley | 14,800 | - | - | 0 | None found |
| Kingston Water Department · Kingston | 14,715 | - | - | 0 | None found |
| East Bridgewater Water Dept. · East Bridgewater | 14,526 | 5.0 | - | 3 | Above limit |
| Medway Water Department · Medway | 14,176 | 6.3 | - | 4 | Above limit |
| Wayland Water Department · Wayland | 14,096 | 8.5 | 4.0 | 6 | Above limit |
| Seekonk Water District · Seekonk | 13,801 | - | 4.6 | 1 | Above limit |
| Northborough Water Department (mwra) · Northborough | 13,551 | - | - | 0 | None found |
| Ipswich Dpu Water Dept · Ipswich | 13,138 | 6.4 | - | 6 | Above limit |
| North Adams Water Dept · North Adams | 13,000 | 1.5 | - | 1 | Sample at limit |
| Medfield Water Dept. · Medfield | 12,713 | 6.9 | 6.7 | 5 | Above limit |
| Hopkinton Water Department · Hopkinton | 12,680 | 6.7 | - | 5 | Above limit |
| Auburn Water District · Auburn | 12,255 | 4.5 | 4.1 | 4 | Above limit |
| Wrentham Water Division · Wrentham | 12,190 | 2.9 | 2.2 | 5 | Sample at limit |
| Hanscom Afb · Hanscom Afb | 11,789 | - | - | 0 | None found |
| Uxbridge Dpw, Water Division · Uxbridge | 11,612 | - | 6.1 | 3 | Above limit |
| Norwell Water Department · Norwell | 11,495 | 8.6 | 12.9 | 7 | Above limit |
| Holbrook Public Works Dept · Holbrook | 11,405 | 6.2 | 9.4 | 7 | Above limit |
| Ash/win Joint Water Authority · Ashburnham | 11,394 | - | - | 0 | None found |
| Weston Water Dept. · Weston | 11,391 | - | - | 0 | None found |
| Aquarion Water Company, Millbury · Millbury | 11,368 | 5.6 | 3.0 | 7 | Above limit |
| Raynham Center Water District · Raynham | 10,964 | 48.6 | - | 7 | Above limit |
| Grafton Water District · Grafton | 10,925 | 6.5 | 6.3 | 5 | Above limit |
| Southborough Dpw Water Division (mwra) · Southborough | 10,638 | - | - | 0 | None found |
| Maynard Dpw, Water Division · Maynard | 10,616 | 6.0 | 2.1 | 5 | Above limit |
| Athol Dpw Water Division · Athol | 10,587 | - | - | 0 | None found |
| Ware Water Dept · Ware | 10,066 | 2.4 | 6.4 | 4 | Above limit |
| Rockport Water Dept · Rockport | 10,000 | - | - | 0 | None found |
| Lenox Dpw Water Division · Lenox | 9,800 | - | - | 0 | None found |
| Kenwood Water District · Dracut | 9,620 | 2.9 | - | 4 | Sample at limit |
| Hanson Water Department · Hanson | 9,612 | 5.4 | 2.0 | 2 | Above limit |
| Pinehills Water Company, INC. · Millbury | 9,478 | - | - | 1 | Below limits |
| Blackstone Water Department · Blackstone | 9,463 | 2.9 | - | 1 | Sample at limit |
| Salisbury Water Department · Salisbury | 9,334 | 3.0 | - | 3 | Sample at limit |
| Littleton Water Department · Littleton | 9,307 | - | - | 0 | None found |
| Pepperell Dpw Water Division · Pepperell | 9,217 | 11.4 | 10.0 | 2 | Above limit |
| Millis Water Dept · Millis | 9,055 | 6.7 | 7.2 | 5 | Above limit |
| Plainville Water Department · Plainville | 8,805 | 1.1 | 5.3 | 4 | Above limit |
| Georgetown Water Department · Georgetown | 8,766 | - | - | 0 | None found |
| Wilbraham Water Dept (mwra) · Wilbraham | 8,533 | - | - | 0 | None found |
| Lynnfield Center Water District · Lynnfield | 8,525 | 5.6 | - | 4 | Above limit |
| Ayer Dpw Water Division · Ayer | 8,479 | - | - | 3 | Below limits |
| Acushnet Water Department · Acushnet | 8,430 | - | - | 0 | None found |
| Northbridge Water Division · Northbridge | 8,127 | - | - | 0 | None found |
| Turners Falls Water Dept · Turners Falls | 8,080 | - | - | 0 | None found |
| Edgartown Water Department · Edgartown | 8,027 | - | - | 0 | None found |
| Adams Fire District · Adams | 7,945 | - | - | 0 | None found |
| Whitinsville Water Company · Whitinsville | 7,899 | - | - | 0 | None found |
| West Bridgewater Water Dept · West Bridgewater | 7,709 | 2.8 | - | 5 | Sample at limit |
| Buzzards Bay Water District · Bourne | 7,700 | - | - | 0 | None found |
| Mattapoisett Water Department · Mattapoisett | 7,685 | - | - | 0 | None found |
| Hamilton Water Dept · Hamilton | 7,674 | 9.2 | 10.1 | 5 | Above limit |
| Southwick Water Dept · Southwick | 7,669 | - | - | 0 | None found |
| North Chelmsford Water Dist · North Chelmsford | 7,660 | - | - | 0 | None found |
| Norfolk Water Division · Norfolk | 7,602 | 6.2 | 2.2 | 5 | Above limit |
| Halifax Water Department · Halifax | 7,575 | 6.7 | 2.4 | 6 | Above limit |
| Cohasset Water Dept · Cohasset | 7,555 | 4.0 | 1.1 | 5 | Above limit |
| Aquarion Water Company Oxford · Millbury | 7,384 | - | - | 1 | Below limits |
| Williamstown Water Dept · Williamstown | 7,326 | - | - | 0 | None found |
| Middleton Water Dept. · Middleton | 7,291 | 1.1 | - | 5 | Sample at limit |
| Lunenburg Water District · Lunenburg | 7,219 | 2.6 | - | 3 | Sample at limit |
| Spencer Water Department · Spencer | 7,037 | - | - | 0 | None found |
| Merrimac Water Department · Merrimac | 6,988 | 6.2 | - | 1 | Above limit |
| West Boylston Water District · West Boylston | 6,919 | 2.7 | - | 3 | Sample at limit |
| Townsend Water Department · Townsend | 6,832 | 6.5 | - | 3 | Above limit |
| Sterling Water Department · Sterling | 6,715 | - | 2.6 | 1 | Sample at limit |
| Orange Water Dept · Orange | 6,526 | - | - | 1 | Below limits |
| Groveland Water Department · Groveland | 6,508 | 6.2 | - | 4 | Above limit |
| Devens Massdevelopment · Devens | 6,500 | - | - | 2 | Below limits |
| Dalton Fire District · Dalton | 6,330 | - | - | 0 | None found |
| South Hadley Fire District #2 Water Dept · South Hadley | 6,200 | - | - | 0 | None found |
| Town of Eastham · Eastham | 6,199 | - | - | 0 | None found |
| Rowley Water Department · Rowley | 6,161 | 7.4 | 5.6 | 7 | Above limit |
| Templeton Munic. Light and Water Plant · Baldwinville | 6,159 | 5.2 | - | 4 | Above limit |
| Marion Water Division · Marion | 6,119 | - | - | 0 | None found |
| Tisbury Water Works · Tisbury | 6,082 | - | - | 0 | None found |
| Rutland Water Department · Rutland | 6,025 | - | - | 0 | None found |
| Hopedale Water Department · Hopedale | 6,017 | 5.3 | 1.1 | 4 | Above limit |
| Lancaster Water Department · Lancaster | 6,000 | - | - | 0 | None found |
| Otis Air National Guard Base · Buzzards Bay | 6,000 | - | - | 0 | None found |
| Winchendon Water Department · Winchendon | 5,706 | - | - | 0 | None found |
| Lee Water Dept · Lee | 5,686 | - | - | 0 | None found |
| Lincoln Water Dept · Lincoln | 5,593 | 5.5 | 4.8 | 3 | Above limit |
| Dudley Water Department · Dudley | 5,515 | - | - | 0 | None found |
| Groton Water Department · Groton | 5,456 | - | - | 1 | Below limits |
| Topsfield Water Department · Topsfield | 5,435 | 8.8 | 5.3 | 5 | Above limit |
| Barnstable Fire District · Barnstable | 5,400 | 2.2 | 4.7 | 6 | Above limit |
| Onset Fire District · Onset | 5,392 | - | 6.2 | 1 | Above limit |
| Dighton Water District · North Dighton | 5,280 | 2.5 | 1.0 | 4 | Sample at limit |
| Manchester By the Sea Dpw · Manchester By the Sea | 5,201 | 10.9 | 2.4 | 6 | Above limit |
| Cotuit Fire District Water Department · Cotuit | 4,938 | - | - | 0 | None found |
| Southampton Water Dept · Southampton | 4,853 | - | - | 0 | None found |
| Lynnfield Water Dist. (mwra) · Lynnfield | 4,820 | - | - | 0 | None found |
| Hadley Dpw Water Division · Hadley | 4,819 | - | - | 0 | None found |
| Palmer Water District No.1 · Palmer | 4,789 | - | - | 0 | None found |
| Town of Avon · Avon | 4,777 | 4.8 | 5.5 | 2 | Above limit |
| Sturbridge Water Department · Sturbridge | 4,746 | - | - | 0 | None found |
| West Newbury Water Department · West Newbury | 4,704 | - | - | 0 | None found |
| North Sagamore Water District · Sagamore Beach | 4,668 | - | - | 2 | Below limits |
| Upton Dpw Water/wastewater Division · Upton | 4,420 | - | - | 0 | None found |
| Tyngsborough Water District · Tyngsborough | 4,416 | 1.1 | - | 3 | Sample at limit |
| Douglas Water Department · Douglas | 4,400 | 2.0 | - | 4 | Sample at limit |
| Great Barrington Fire Dist · Great Barrington | 4,380 | - | - | 0 | None found |
| Paxton Water Department · Paxton | 4,300 | - | - | 3 | Below limits |
| Monson Water and Sewer Dept · Monson | 4,222 | - | - | 0 | None found |
| Shirley Water District · Shirley | 4,165 | 6.4 | - | 5 | Above limit |
| Wenham Water Dept. · Wenham | 3,942 | 6.2 | 6.0 | 5 | Above limit |
| North Raynham Water District · Raynham | 3,902 | - | - | 1 | Below limits |
| Westminster Department of Public Works · Westminster | 3,889 | - | - | 0 | None found |
| North Brookfield Water Department · North Brookfield | 3,863 | - | - | 0 | None found |
| South Deerfield Water Supply District · South Deerfield | 3,800 | - | - | 0 | None found |
| Cherry Valley/ Rochdale Water District · Rochdale | 3,696 | - | - | 2 | Below limits |
| Ashburnham Water Department · Ashburnham | 3,680 | - | - | 0 | None found |
| Mci Shirley · Milford | 3,500 | - | - | 1 | Below limits |
| Boylston Water District · Boylston | 3,343 | 5.0 | - | 2 | Above limit |
| Nahant Water Dept. (mwra) · Nahant | 3,334 | - | - | 0 | None found |
| Belchertown Water District · Belchertown | 3,253 | - | - | 0 | None found |
| Hatfield Water Dept · Hatfield | 3,164 | - | - | 4 | Below limits |
| Barre Water Department · Barre | 2,610 | - | - | 0 | None found |
| Mci Norfolk/cedar Junction/walpole · Milford | 2,200 | - | - | 0 | None found |
| Mt Greylock Regional School · Williamstown | 930 | - | - | 0 | None found |
| Whately Water Department · South Deerfield | 900 | - | - | 0 | None found |
| Haystack Estates · Tyngsborough | 60 | 5.4 | - | 4 | Above limit |
| Southbridge Tool and Manufacturing · Dudley | 58 | - | - | 0 | None found |
On a private well in Massachusetts?
EPA's program only covers public systems. Private wells are never part of UCMR 5, so the only way to know is to test. Our well testing guide covers which lab tests to order, and the best well water systems covers what to install once you have results.
Cite this page
Well & Tap. "PFAS in Massachusetts drinking water: results for 263 systems." Data: U.S. EPA UCMR 5, final release August 2026. https://wellandtap.com/pfas/massachusetts/
Source: EPA UCMR 5 final occurrence data (August 2026); population from EPA SDWIS. Method.