Results from entry points (water leaving treatment, not household taps) of public water systems sampled under EPA's Fifth Unregulated Contaminant Monitoring Rule. Click a county to see every water system serving it, or turn on service areas and click a location to see the systems that serve that spot.
263 of the 772 public water systems listed for Massachusetts were sampled. Sorted by the highest single result relative to EPA's 2024 limits. Each name links to a page with all of that system's results. All 772 Massachusetts systems, including those not tested · Download all Massachusetts results (CSV, gzip)
| System | PWSID | City | Population | PFOA (ppt) | PFOS (ppt) | HI | Highest single result |
|---|---|---|---|---|---|---|---|
| Raynham Center Water District | MA4245000 | Raynham | 10,964 | 92 | <MRL | 0.32 | PFOA ≥ 3 × its limit |
| Dartmouth Water Division | MA4072000 | Dartmouth | 24,696 | 4.2 | 50.6 | 0.01 | PFOS ≥ 3 × its limit |
| Natick Water And Sewer Division | MA3198000 | Natick | 37,006 | 14.3 | 37.3 | 1.123 | PFOS ≥ 3 × its limit |
| Duxbury Water Department | MA4082000 | Duxbury | 16,387 | 7.5 | 35 | 3.102 | PFOS ≥ 3 × its limit |
| Norwell Water Department | MA4219000 | Norwell | 11,495 | 9.9 | 18.4 | 0.004 | PFOS ≥ 3 × its limit |
| Easton Water Div | MA4088000 | South Easton | 25,058 | 9.9 | 16.3 | 0.792 | PFOS ≥ 3 × its limit |
| Aquarion Water Company, Millbury | MA2186000 | Millbury | 11,368 | 15.8 | 6.2 | 0.002 | PFOA ≥ 3 × its limit |
| Sharon Water Dept | MA4266000 | Sharon | 16,846 | 8.1 | 15 | 2.902 | PFOS ≥ 3 × its limit |
| Acton Water Supply District | MA2002000 | Acton | 21,285 | 13.4 | 4.9 | 0.32 | PFOA ≥ 3 × its limit |
| Randolph Water Department | MA4244000 | Randolph | 35,114 | 7.3 | 13 | 0.3 | PFOS ≥ 3 × its limit |
| Abington/Rockland Joint Wtr. Works | MA4001000 | Rockland | 33,387 | 12 | 7 | 0.402 | PFOA ≥ 3 × its limit |
| Attleboro Water Dept | MA4016000 | Attleboro | 46,461 | 6.6 | 12 | 0.38 | PFOS ≥ 3 × its limit |
| Manchester By The Sea Dpw | MA3166000 | Manchester By The Sea | 5,201 | 12 | 4.8 | 0.003 | PFOA ≥ 3 × its limit |
| Holbrook Public Works Dept | MA4133000 | Holbrook | 11,405 | 7 | 11.9 | 0.002 | PFOS 1–3 × its limit |
| Hanover Water Dept | MA4122000 | Hanover | 14,984 | 8.9 | 11.4 | 0.003 | PFOS 1–3 × its limit |
| Pepperell Dpw Water Division | MA2232000 | Pepperell | 9,217 | 11.4 | 10 | 0 | PFOA 1–3 × its limit |
| Hamilton Water Dept | MA3119000 | Hamilton | 7,674 | 11.1 | 11.2 | 0.003 | PFOS 1–3 × its limit |
| Middleborough Water Supply | MA4182000 | Middleborough | 15,350 | 11 | 5 | 0.3 | PFOA 1–3 × its limit |
| Bridgewater Water Department | MA4042000 | Bridgewater | 28,633 | 9 | 7 | 0.403 | PFOA 1–3 × its limit |
| North Attleboro Water Dept | MA4211000 | North Attleborough | 31,410 | 9 | 8 | 0.402 | PFOA 1–3 × its limit |
| Sudbury Water District | MA3288000 | Sudbury | 18,416 | 9 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Topsfield Water Department | MA3298000 | Topsfield | 5,435 | 9 | 5.4 | 0.002 | PFOA 1–3 × its limit |
| Wayland Water Department | MA3315000 | Wayland | 14,096 | 9 | 4 | 0 | PFOA 1–3 × its limit |
| Chelmsford Water District | MA3056000 | Chelmsford | 28,750 | 8.9 | 7.2 | 0.002 | PFOA 1–3 × its limit |
| Norton Water Department | MA4218000 | Norton | 19,161 | 8.8 | 4 | 0.64 | PFOA 1–3 × its limit |
| Westford Water Department | MA3330000 | Westford | 18,848 | 8.6 | 4.4 | 0.002 | PFOA 1–3 × its limit |
| Braintree Water And Sewer Dept. | MA4040000 | Braintree | 39,143 | 5.3 | 8.5 | 0.002 | PFOS 1–3 × its limit |
| Woburn Water Dept. | MA3347000 | Woburn | 40,876 | 8.4 | 6.9 | 0.002 | PFOA 1–3 × its limit |
| Halifax Water Department | MA4118000 | Halifax | 7,575 | 7.7 | 4.8 | 0.542 | PFOA 1–3 × its limit |
| Rowley Water Department | MA3254000 | Rowley | 6,161 | 7.7 | 5.7 | 0 | PFOA 1–3 × its limit |
| Stoughton Water Department | MA4285000 | Stoughton | 29,281 | 7.7 | 7.1 | 0.002 | PFOA 1–3 × its limit |
| Westborough Water Department | MA2328000 | Westborough | 21,567 | 5.8 | 7.5 | 0.002 | PFOS 1–3 × its limit |
| Ipswich Dpu Water Dept | MA3144000 | Ipswich | 13,138 | 7.3 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Millis Water Dept | MA2187000 | Millis | 9,055 | 6.9 | 7.3 | 0.005 | PFOS 1–3 × its limit |
| Hopkinton Water Department | MA2139000 | Hopkinton | 12,680 | 7.2 | <MRL | 0.003 | PFOA 1–3 × its limit |
| Medway Water Department | MA2177000 | Medway | 14,176 | 7.2 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Wenham Water Dept. | MA3320000 | Wenham | 3,942 | 7.2 | 6.4 | 0.002 | PFOA 1–3 × its limit |
| Barnstable Fire District | MA4020000 | Barnstable | 5,400 | 4.4 | 7.1 | 0.36 | PFOS 1–3 × its limit |
| Maynard Dpw, Water Division | MA2174000 | Maynard | 10,746 | 7.1 | 4.2 | 0.002 | PFOA 1–3 × its limit |
| Milford Water Department | MA2185000 | Milford | 30,379 | 7.1 | 6.6 | 0.002 | PFOA 1–3 × its limit |
| Onset Fire Districtwater Dept. | MA4310003 | Onset | 5,392 | <MRL | 7.1 | 0 | PFOS 1–3 × its limit |
| Ware Water Dept | MA1309000 | Ware | 10,066 | 4.9 | 7.1 | 0 | PFOS 1–3 × its limit |
| Marshfield Water Department | MA4171000 | Marshfield | 34,000 | 7 | 4.6 | 0.002 | PFOA 1–3 × its limit |
| Medfield Water Dept. | MA2175000 | Medfield | 12,713 | 7 | 6.7 | 0.002 | PFOA 1–3 × its limit |
| Norfolk Water Division | MA2208000 | Norfolk | 7,602 | 7 | 4.5 | 0.002 | PFOA 1–3 × its limit |
| Peabody Water Dept. | MA3229000 | West Peabody | 54,481 | 7 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Grafton Water District | MA2110000 | Grafton | 10,925 | 6.9 | 6.9 | 0.002 | PFOA 1–3 × its limit |
| Merrimac Water Department | MA3180000 | Merrimac | 6,988 | 6.9 | <MRL | 0 | PFOA 1–3 × its limit |
| Shirley Water District | MA2270000 | Shirley | 4,165 | 6.9 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Wakefield Water Dept | MA3305000 | Wakefield | 27,090 | 6.9 | <MRL | 0 | PFOA 1–3 × its limit |
| Hopedale Water Department | MA2138000 | Hopedale | 6,017 | 6.8 | 4.3 | 0 | PFOA 1–3 × its limit |
| Cohasset Water Dept | MA4065000 | Cohasset | 7,555 | 6.7 | 4.5 | 0 | PFOA 1–3 × its limit |
| Foxboro Water Department | MA4099000 | Foxborough | 18,721 | 6.3 | 6.7 | 0.002 | PFOS 1–3 × its limit |
| Uxbridge Dpw, Water Division | MA2304000 | Uxbridge | 11,612 | <MRL | 6.7 | 0.342 | PFOS 1–3 × its limit |
| Wellesley Water Division | MA3317000 | Wellesley | 29,550 | 6.3 | 6.6 | 0.003 | PFOS 1–3 × its limit |
| Dedham Westwood Water Dist. | MA3073000 | Dedham | 41,630 | 6.5 | 5.1 | 0 | PFOA 1–3 × its limit |
| Holliston Water Department | MA2136000 | Holliston | 15,139 | 5.3 | 6.5 | 0.002 | PFOS 1–3 × its limit |
| Townsend Water Department | MA2299000 | Townsend | 6,832 | 6.5 | <MRL | 0 | PFOA 1–3 × its limit |
| Lincoln Water Dept | MA3157000 | Lincoln | 5,593 | 6.4 | 5.4 | 0.32 | PFOA 1–3 × its limit |
| Weir River Water System | MA4131000 | Hingham | 45,339 | 6.4 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Groveland Water Department | MA3116000 | Groveland | 6,508 | 6.3 | <MRL | 0 | PFOA 1–3 × its limit |
| Kenwood Water District | MA3079001 | Dracut | 9,620 | 6.3 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Mansfield Water Division | MA4167000 | Mansfield | 21,797 | 4.3 | 6.2 | 0.312 | PFOS 1–3 × its limit |
| Dracut Water Supply District | MA3079000 | Collinsville | 25,808 | 6.1 | <MRL | 0.005 | PFOA 1–3 × its limit |
| Lynnfield Center Water District | MA3164000 | Lynnfield | 8,525 | 6.1 | <MRL | 0 | PFOA 1–3 × its limit |
| Boylston Water District | MA2039000 | Boylston | 3,343 | 6 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Concord Water Dept | MA3067000 | Concord | 18,788 | 6 | <MRL | 0.005 | PFOA 1–3 × its limit |
| Salisbury Water Division | MA3259000 | Salisbury | 9,334 | 6 | <MRL | 0 | PFOA 1–3 × its limit |
| Town Of Avon | MA4018000 | Avon | 4,777 | 5.1 | 6 | 0 | PFOS 1–3 × its limit |
| North Adams Water Dept | MA1209000 | North Adams | 13,000 | 5.9 | <MRL | 0 | PFOA 1–3 × its limit |
| Plainville Water Department | MA4238000 | Plainville | 8,805 | 4.3 | 5.9 | 0.009 | PFOS 1–3 × its limit |
| Auburn Water District | MA2017000 | Auburn | 12,255 | 5.7 | 4.7 | 0 | PFOA 1–3 × its limit |
| Blackstone Water Department | MA2032000 | Blackstone | 9,463 | 5.7 | <MRL | 0 | PFOA 1–3 × its limit |
| Scituate Water Division | MA4264000 | Scituate | 19,297 | 5.6 | 5.7 | 0.002 | PFOS 1–3 × its limit |
| Wrentham Water Division | MA4350000 | Wrentham | 12,190 | 5.7 | 4.4 | 0.003 | PFOA 1–3 × its limit |
| Franklin Water Department | MA2101000 | Franklin | 33,706 | 4.7 | 5.6 | 0.54 | PFOS 1–3 × its limit |
| Hanson Water Department | MA4123000 | Hanson | 9,612 | 5.6 | 4 | 0 | PFOA 1–3 × its limit |
| Haystack Estates | MA3330019 | Tyngsborough | 60 | 5.6 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Shrewsbury Water Department | MA2271000 | Shrewsbury | 38,325 | 5.4 | 5.6 | 0.002 | PFOS 1–3 × its limit |
| Billerica Water Works | MA3031000 | Billerica | 42,119 | 5.5 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Dighton Water District | MA4076000 | North Dighton | 5,280 | 5.5 | 4.1 | 0 | PFOA 1–3 × its limit |
| West Bridgewater Water Dept | MA4322000 | West Bridgewater | 7,709 | 5.5 | <MRL | 0.002 | PFOA 1–3 × its limit |
| West Boylston Water District | MA2321000 | West Boylston | 6,919 | 5.4 | <MRL | 0 | PFOA 1–3 × its limit |
| Danvers Water Dept. | MA3071000 | Middleton | 28,087 | <MRL | 5.2 | 0 | PFOS 1–3 × its limit |
| Sterling Water Department | MA2282000 | Sterling | 6,814 | <MRL | 5.2 | 0 | PFOS 1–3 × its limit |
| Templeton Munic. Light And Water Plant | MA2294000 | Baldwinville | 6,159 | 5.2 | <MRL | 0 | PFOA 1–3 × its limit |
| East Bridgewater Water Dept | MA4083000 | East Bridgewater | 14,526 | 5.1 | <MRL | 0 | PFOA 1–3 × its limit |
| Lunenburg Water District | MA2162000 | Lunenburg | 7,219 | 5.1 | <MRL | 0 | PFOA 1–3 × its limit |
| Swansea Water District | MA4292000 | Swansea | 17,375 | 5.1 | <MRL | 0.771 | PFOA 1–3 × its limit |
| Bellingham Dpw Water Sewer Division | MA2025000 | Bellingham | 16,556 | 4.3 | 5 | 0.002 | PFOS 1–3 × its limit |
| Canton Water Dept | MA4050000 | Canton | 22,766 | 5 | <MRL | 0 | PFOA 1–3 × its limit |
| Needham Water Dept | MA3199000 | Needham | 31,664 | 4.6 | 5 | 0 | PFOS 1–3 × its limit |
| Seekonk Water District | MA4265000 | Seekonk | 13,801 | <MRL | 5 | 0 | PFOS 1–3 × its limit |
| Tewksbury Water Department | MA3295000 | Tewksbury | 31,342 | 5 | <MRL | 0 | PFOA 1–3 × its limit |
| Centerville Osterville Marstons Mills Wd | MA4020002 | Osterville | 50,000 | 4.9 | <MRL | 0.311 | PFOA 1–3 × its limit |
| Fitchburg Dpw Division Of Water Supply | MA2097000 | Fitchburg | 41,946 | 4.9 | <MRL | 0 | PFOA 1–3 × its limit |
| Holden Water Division, Dpw | MA2134000 | Holden | 18,016 | 4.9 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Bourne Water District | MA4036000 | Pocasset | 22,500 | <MRL | 4.8 | 0.76 | PFOS 1–3 × its limit |
| Cambridge Water Department | MA3049000 | Cambridge | 118,214 | 4.8 | <MRL | 0 | PFOA 1–3 × its limit |
| Lynn Water And Sewer Comm | MA3163000 | Lynn | 101,253 | 4.7 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Lowell Regional Water Utility | MA3160000 | Lowell | 120,418 | 4.6 | <MRL | 0 | PFOA 1–3 × its limit |
| Newburyport Water Department | MA3206000 | Newburyport | 20,335 | <MRL | 4.6 | 0.002 | PFOS 1–3 × its limit |
| Tyngsborough Water District | MA3301000 | Tyngsborough | 4,416 | 4.6 | <MRL | 0 | PFOA 1–3 × its limit |
| Middleton Water Dept. | MA3184000 | Middleton | 7,291 | 4.5 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Webster Water Department | MA2316000 | Webster | 17,776 | 4.4 | <MRL | 0 | PFOA 1–3 × its limit |
| Leominster Water Division | MA2153000 | Leominster | 41,683 | 4.3 | <MRL | 0 | PFOA 1–3 × its limit |
| Douglas Water Department | MA2077000 | Douglas | 4,400 | 4 | <MRL | 0.002 | PFOA 1–3 × its limit |
| Methuen Water Dept | MA3181000 | Methuen | 53,059 | 4 | <MRL | 0 | PFOA 1–3 × its limit |
| Walpole Water Dept | MA4307000 | Walpole | 24,070 | 4 | 4 | 0 | PFOA 1–3 × its limit |
| Mci Shirley | MA2270001 | Milford | 3,500 | <MRL | <MRL | 0.87 | Hazard Index below its limit |
| Orange Water Dept | MA1223000 | Orange | 6,526 | <MRL | <MRL | 0.48 | Hazard Index below its limit |
| Yarmouth Water Department | MA4351000 | West Yarmouth | 38,900 | <MRL | <MRL | 0.31 | Hazard Index below its limit |
| Hatfield Water Dept | MA1127000 | Hatfield | 3,164 | <MRL | <MRL | 0.006 | Hazard Index below its limit |
| Groton Water Department | MA2115000 | Groton | 5,017 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Plymouth Water Department | MA4239000 | Plymouth | 47,100 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Whitman Water System | MA4338000 | Whitman | 14,947 | <MRL | <MRL | 0.002 | Hazard Index below its limit |
| Andover Water Dept | MA3009000 | Andover | 36,569 | <MRL | <MRL | 0 | Other PFAS detected |
| Aquarion Water Company Oxford | MA2226000 | Millbury | 7,384 | <MRL | <MRL | 0 | Other PFAS detected |
| Aquarion Water Company, Pinehills | MA4239055 | Millbury | 9,478 | <MRL | <MRL | 0 | Other PFAS detected |
| Ashland Water And Sewer Dept. | MA3014000 | Ashland | 18,832 | <MRL | <MRL | 0 | Other PFAS detected |
| Ayer Dpw Water Division | MA2019000 | Ayer | 8,479 | <MRL | <MRL | 0 | Other PFAS detected |
| Beverly Water Dept | MA3030000 | Beverly | 47,461 | <MRL | <MRL | 0 | Other PFAS detected |
| Burlington Water Dept | MA3048000 | Burlington | 25,864 | <MRL | <MRL | 0 | Other PFAS detected |
| Cherry Valley/ Rochdale Water District | MA2151001 | Rochdale | 3,696 | <MRL | <MRL | 0 | Other PFAS detected |
| City Of New Bedford Dpi | MA4201000 | New Bedford | 101,079 | <MRL | <MRL | 0 | Other PFAS detected |
| Dennis Water District | MA4075000 | South Dennis | 65,000 | <MRL | <MRL | 0 | Other PFAS detected |
| Devens Massdevelopment | MA2019001 | Devens | 6,500 | <MRL | <MRL | 0 | Other PFAS detected |
| Hudson Water Supply | MA2141000 | Hudson | 20,032 | <MRL | <MRL | 0 | Other PFAS detected |
| Hyannis Water System, Town Of Barnstable | MA4020004 | Hyannis | 35,000 | <MRL | <MRL | 0 | Other PFAS detected |
| Lawrence Water Works | MA3149000 | Lawrence | 89,143 | <MRL | <MRL | 0 | Other PFAS detected |
| Mashpee Water District | MA4172039 | Mashpee | 36,922 | <MRL | <MRL | 0 | Other PFAS detected |
| North Raynham Water District | MA4245002 | Raynham | 3,902 | <MRL | <MRL | 0 | Other PFAS detected |
| North Reading Water Dept. | MA3213000 | North Reading | 16,379 | <MRL | <MRL | 0 | Other PFAS detected |
| North Sagamore Water District | MA4036002 | Sagamore Beach | 4,668 | <MRL | <MRL | 0 | Other PFAS detected |
| Oak Bluffs Water District | MA4221000 | Oak Bluffs | 24,000 | <MRL | <MRL | 0 | Other PFAS detected |
| Paxton Water Department | MA2228000 | Paxton | 4,300 | <MRL | <MRL | 0 | Other PFAS detected |
| Pembroke Water Division Dpw | MA4231000 | Pembroke | 18,175 | <MRL | <MRL | 0 | Other PFAS detected |
| Revere Water Division (Mwra) | MA3248000 | Revere | 62,186 | <MRL | <MRL | 0 | Other PFAS detected |
| Salem Water Department | MA3258000 | Salem | 44,480 | <MRL | <MRL | 0 | Other PFAS detected |
| Southbridge Water Department | MA2278000 | Southbridge | 19,562 | <MRL | <MRL | 0 | Other PFAS detected |
| Westfield Dpwwater Division | MA1329000 | Westfield | 41,094 | <MRL | <MRL | 0 | Other PFAS detected |
| Weymouth Water Department | MA4336000 | Weymouth | 57,871 | <MRL | <MRL | 0 | Other PFAS detected |
| Wilmington Water Dept | MA3342000 | Wilmington | 21,654 | <MRL | <MRL | 0 | Other PFAS detected |
| Worcester Dpwp, Water Supply Division | MA2348000 | Worcester | 206,518 | <MRL | <MRL | 0 | Other PFAS detected |
| Acushnet Water Department | MA4003000 | Acushnet | 8,430 | <MRL | <MRL | 0 | No PFAS detected |
| Adams Fire District | MA1004000 | Adams | 7,945 | <MRL | <MRL | 0 | No PFAS detected |
| Agawam Water Department | MA1005000 | Agawam | 28,692 | <MRL | <MRL | 0 | No PFAS detected |
| Amesbury Dpw Water Div. | MA3007000 | Amesbury | 17,366 | <MRL | <MRL | 0 | No PFAS detected |
| Amherst Dpw Water Division | MA1008000 | Amherst | 39,263 | <MRL | <MRL | 0 | No PFAS detected |
| Arlington Water Dept. (Mwra) | MA3010000 | Arlington | 46,308 | <MRL | <MRL | 0 | No PFAS detected |
| Ash/Win Joint Water Authority | MA2011004 | Ashburnham | 11,394 | <MRL | <MRL | 0 | No PFAS detected |
| Ashburnham Water Department | MA2011000 | Ashburnham | 3,680 | <MRL | <MRL | 0 | No PFAS detected |
| Athol Dpw Water Division | MA1015000 | Athol | 10,587 | <MRL | <MRL | 0 | No PFAS detected |
| Barre Water Department | MA2021000 | Barre | 2,610 | <MRL | <MRL | 0 | No PFAS detected |
| Bedford Water Dept. | MA3023000 | Bedford | 14,955 | <MRL | <MRL | 0 | No PFAS detected |
| Belchertown Water District | MA1024000 | Belchertown | 3,253 | <MRL | <MRL | 0 | No PFAS detected |
| Belmont Water Dept. (Mwra) | MA3026000 | Belmont | 27,442 | <MRL | <MRL | 0 | No PFAS detected |
| Boston Water And Sewer Commission (Mwra) | MA3035000 | Boston | 675,647 | <MRL | <MRL | 0 | No PFAS detected |
| Brewster Water Department | MA4041000 | Brewster | 35,000 | <MRL | <MRL | 0 | No PFAS detected |
| Brockton Water Department | MA4044000 | Brockton | 105,788 | <MRL | <MRL | 0 | No PFAS detected |
| Brookline Water And Sewer Division | MA3046000 | Brookline | 63,191 | <MRL | <MRL | 0 | No PFAS detected |
| Buzzards Bay Water District | MA4036001 | Bourne | 7,700 | <MRL | <MRL | 0 | No PFAS detected |
| Chatham Water Department | MA4055000 | Chatham | 30,000 | <MRL | <MRL | 0 | No PFAS detected |
| Chelsea Water Dept. (Mwra) | MA3057000 | Chelsea | 40,787 | <MRL | <MRL | 0 | No PFAS detected |
| Chicopee Water Dept (Mwra) | MA1061000 | Chicopee | 55,560 | <MRL | <MRL | 0 | No PFAS detected |
| Clinton Water Dept | MA2064000 | Clinton | 15,428 | <MRL | <MRL | 0 | No PFAS detected |
| Cotuit Fire District Water Department | MA4020003 | Cotuit | 4,938 | <MRL | <MRL | 0 | No PFAS detected |
| Dalton Fire District | MA1070000 | Dalton | 6,330 | <MRL | <MRL | 0 | No PFAS detected |
| Dudley Water Department | MA2080000 | Dudley | 5,515 | <MRL | <MRL | 0 | No PFAS detected |
| East Longmeadow Dpw Water Dept | MA1085000 | East Longmeadow | 16,358 | <MRL | <MRL | 0 | No PFAS detected |
| Easthampton Water Dept | MA1087000 | Easthampton | 16,211 | <MRL | <MRL | 0 | No PFAS detected |
| Edgartown Water Department | MA4089000 | Edgartown | 8,027 | <MRL | <MRL | 0 | No PFAS detected |
| Everett Water Dept. (Mwra) | MA3093000 | Everett | 49,075 | <MRL | <MRL | 0 | No PFAS detected |
| Fairhaven Water Dept | MA4094000 | Fairhaven | 15,155 | <MRL | <MRL | 0 | No PFAS detected |
| Fall River Water Department | MA4095000 | Fall River | 94,000 | <MRL | <MRL | 0 | No PFAS detected |
| Falmouth Water Dept | MA4096000 | Falmouth | 97,551 | <MRL | <MRL | 0 | No PFAS detected |
| Framingham Water Dept. (Mwra) | MA3100000 | Framingham | 72,362 | <MRL | <MRL | 0 | No PFAS detected |
| Gardner Water Department | MA2103000 | Gardner | 21,381 | <MRL | <MRL | 0 | No PFAS detected |
| Georgetown Water Department | MA3105000 | Georgetown | 8,766 | <MRL | <MRL | 0 | No PFAS detected |
| Gloucester Public Utility Division | MA3107000 | Gloucester | 37,440 | <MRL | <MRL | 0 | No PFAS detected |
| Great Barrington Fire Dist | MA1113000 | Great Barrington | 4,380 | <MRL | <MRL | 0 | No PFAS detected |
| Greenfield Water Department | MA1114000 | Greenfield | 17,768 | <MRL | <MRL | 0 | No PFAS detected |
| Hadley Dpw Water Division | MA1117002 | Hadley | 4,819 | <MRL | <MRL | 0 | No PFAS detected |
| Hanscom Afb | MA3023002 | Hanscom Afb | 11,789 | <MRL | <MRL | 0 | No PFAS detected |
| Harwich Water Department | MA4126000 | Harwich | 39,144 | <MRL | <MRL | 0 | No PFAS detected |
| Haverhill Water Dept | MA3128000 | Haverhill | 61,277 | <MRL | <MRL | 0 | No PFAS detected |
| Holyoke Water Works | MA1137000 | Holyoke | 37,838 | <MRL | <MRL | 0 | No PFAS detected |
| Inima Usa / Aquaria Llc | MA4076004 | North Dighton | 105,643 | <MRL | <MRL | 0 | No PFAS detected |
| Kingston Water Department | MA4145000 | Kingston | 14,715 | <MRL | <MRL | 0 | No PFAS detected |
| Lancaster Water Department | MA2147000 | Lancaster | 6,000 | <MRL | <MRL | 0 | No PFAS detected |
| Lee Water Dept | MA1150000 | Lee | 5,686 | <MRL | <MRL | 0 | No PFAS detected |
| Lenox Dpw Water Division | MA1152000 | Lenox | 9,800 | <MRL | <MRL | 0 | No PFAS detected |
| Lexington Water Dept. (Mwra) | MA3155000 | Lexington | 34,074 | <MRL | <MRL | 0 | No PFAS detected |
| Littleton Water Department | MA2158000 | Littleton | 9,334 | <MRL | <MRL | 0 | No PFAS detected |
| Longmeadow Water Dept | MA1159000 | Longmeadow | 15,853 | <MRL | <MRL | 0 | No PFAS detected |
| Lynnfield Water Dist. (Mwra) | MA3164001 | Lynnfield | 4,820 | <MRL | <MRL | 0 | No PFAS detected |
| Malden Water Division (Mwra) | MA3165000 | Malden | 66,263 | <MRL | <MRL | 0 | No PFAS detected |
| Marblehead Water Dept. (Mwra) | MA3168000 | Marblehead | 20,441 | <MRL | <MRL | 0 | No PFAS detected |
| Marion Water Division | MA4169000 | Marion | 6,119 | <MRL | <MRL | 0 | No PFAS detected |
| Marlborough Dpw Water Div. (Mwra) | MA2170000 | Marlborough | 41,799 | <MRL | <MRL | 0 | No PFAS detected |
| Mattapoisett River Valley W.D. | MA4173001 | Mattapoisett | 29,600 | <MRL | <MRL | 0 | No PFAS detected |
| Mattapoisett Water Department | MA4173000 | Mattapoisett | 7,685 | <MRL | <MRL | 0 | No PFAS detected |
| Mci Norfolk/Cedar Junction/Walpole | MA2208001 | Milford | 2,200 | <MRL | <MRL | 0 | No PFAS detected |
| Medford Water Dept. (Mwra) | MA3176000 | Medford | 61,700 | <MRL | <MRL | 0 | No PFAS detected |
| Melrose Water Division (Mwra) | MA3178000 | Melrose | 29,938 | <MRL | <MRL | 0 | No PFAS detected |
| Milton Water Dept. (Mwra) | MA3189000 | Milton | 28,630 | <MRL | <MRL | 0 | No PFAS detected |
| Monson Water And Sewer Dept | MA1191000 | Monson | 4,222 | <MRL | <MRL | 0 | No PFAS detected |
| Mt Greylock Regional School | MA1341010 | Williamstown | 930 | <MRL | <MRL | 0 | No PFAS detected |
| Nahant Water Dept. (Mwra) | MA3196000 | Nahant | 3,334 | <MRL | <MRL | 0 | No PFAS detected |
| Newton Water Dept. (Mwra) | MA3207000 | Newton | 88,931 | <MRL | <MRL | 0 | No PFAS detected |
| North Andover Water Dept | MA3210000 | North Andover | 30,915 | <MRL | <MRL | 0 | No PFAS detected |
| North Brookfield Water Department | MA2212000 | North Brookfield | 3,863 | <MRL | <MRL | 0 | No PFAS detected |
| North Chelmsford Water Dist | MA3056002 | North Chelmsford | 7,660 | <MRL | <MRL | 0 | No PFAS detected |
| Northampton Water Division | MA1214000 | Northampton | 29,571 | <MRL | <MRL | 0 | No PFAS detected |
| Northborough Water Department (Mwra) | MA2215000 | Northborough | 13,551 | <MRL | <MRL | 0 | No PFAS detected |
| Northbridge Water Division | MA2216006 | Northbridge | 8,127 | <MRL | <MRL | 0 | No PFAS detected |
| Norwood Water Dept. (Mwra) | MA4220000 | Norwood | 29,909 | <MRL | <MRL | 0 | No PFAS detected |
| Orleans Water Department | MA4224000 | Orleans | 17,460 | <MRL | <MRL | 0 | No PFAS detected |
| Otis Air National Guard Base | MA4096001 | Buzzards Bay | 6,000 | <MRL | <MRL | 0 | No PFAS detected |
| Palmer Water District No.1 | MA1227000 | Palmer | 4,789 | <MRL | <MRL | 0 | No PFAS detected |
| Pittsfield Dpu Water Dept | MA1236000 | Pittsfield | 43,927 | <MRL | <MRL | 0 | No PFAS detected |
| Provincetown Water Department | MA4242000 | Provincetown | 22,250 | <MRL | <MRL | 0 | No PFAS detected |
| Quincy Water Dept. (Mwra) | MA3243000 | Quincy | 106,000 | <MRL | <MRL | 0 | No PFAS detected |
| Reading Water Department (Mwra) | MA3246000 | Reading | 26,262 | <MRL | <MRL | 0 | No PFAS detected |
| Rockport Water Dept | MA3252000 | Rockport | 10,000 | <MRL | <MRL | 0 | No PFAS detected |
| Rutland Water Department | MA2257000 | Rutland | 6,025 | <MRL | <MRL | 0 | No PFAS detected |
| Sandwich Water District | MA4261000 | Sandwich | 23,000 | <MRL | <MRL | 0 | No PFAS detected |
| Saugus Water Dept. (Mwra) | MA3262000 | Saugus | 27,844 | <MRL | <MRL | 0 | No PFAS detected |
| Somerset Water Department | MA4273000 | Somerset | 18,303 | <MRL | <MRL | 0 | No PFAS detected |
| Somerville Water Dept. (Mwra) | MA3274000 | Somerville | 81,045 | <MRL | <MRL | 0 | No PFAS detected |
| South Deerfield Water Supply District | MA1074001 | South Deerfield | 3,800 | <MRL | <MRL | 0 | No PFAS detected |
| South Hadley Fd #1 (Mwra) | MA1275000 | South Hadley | 14,800 | <MRL | <MRL | 0 | No PFAS detected |
| South Hadley Fire District #2 Water Dept | MA1275001 | South Hadley | 6,200 | <MRL | <MRL | 0 | No PFAS detected |
| Southampton Water Dept | MA1276000 | Southampton | 4,853 | <MRL | <MRL | 0 | No PFAS detected |
| Southborough Dpw Water Division (Mwra) | MA2277000 | Southborough | 10,638 | <MRL | <MRL | 0 | No PFAS detected |
| Southbridge Tool And Manufacturing | MA2080006 | Dudley | 58 | <MRL | <MRL | 0 | No PFAS detected |
| Southwick Water Dept | MA1279000 | Southwick | 7,669 | <MRL | <MRL | 0 | No PFAS detected |
| Spencer Water Department | MA2280000 | Spencer | 7,037 | <MRL | <MRL | 0 | No PFAS detected |
| Springfield Water And Sewer Commission | MA1281000 | Springfield | 169,170 | <MRL | <MRL | 0 | No PFAS detected |
| Stoneham Water Dept (Mwra Supply) | MA3284000 | Stoneham | 23,244 | <MRL | <MRL | 0 | No PFAS detected |
| Sturbridge Water Department | MA2287000 | Sturbridge | 4,746 | <MRL | <MRL | 0 | No PFAS detected |
| Swampscott Water Dept. (Mwra) | MA3291000 | Swampscott | 15,300 | <MRL | <MRL | 0 | No PFAS detected |
| Taunton Water Division | MA4293000 | Taunton | 62,165 | <MRL | <MRL | 0 | No PFAS detected |
| Tisbury Water Works | MA4296000 | Tisbury | 6,082 | <MRL | <MRL | 0 | No PFAS detected |
| Town Of Eastham | MA4086095 | Eastham | 6,199 | <MRL | <MRL | 0 | No PFAS detected |
| Turners Falls Water Dept | MA1192000 | Turners Falls | 8,080 | <MRL | <MRL | 0 | No PFAS detected |
| Upper Cape Regional Water Cooperative | MA4261024 | Sandwich | 56,250 | <MRL | <MRL | 0 | No PFAS detected |
| Upton Dpw Water/Wastewater Division | MA2303000 | Upton | 4,420 | <MRL | <MRL | 0 | No PFAS detected |
| Waltham Water Department | MA3308000 | Waltham | 65,218 | <MRL | <MRL | 0 | No PFAS detected |
| Wannacomet Water Company | MA4197000 | Nantucket | 27,703 | <MRL | <MRL | 0 | No PFAS detected |
| Wareham Fire District | MA4310000 | Parkwood Beach | 20,102 | <MRL | <MRL | 0 | No PFAS detected |
| Watertown Department Of Public Works | MA3314000 | Watertown | 35,985 | <MRL | <MRL | 0 | No PFAS detected |
| West Newbury Water Department | MA3324000 | West Newbury | 4,704 | <MRL | <MRL | 0 | No PFAS detected |
| West Springfield Dpw Water Division | MA1325000 | West Springfield | 28,835 | <MRL | <MRL | 0 | No PFAS detected |
| Westminster Department Of Public Works | MA2332000 | Westminster | 3,889 | <MRL | <MRL | 0 | No PFAS detected |
| Weston Water Dept. | MA3333000 | Weston | 11,391 | <MRL | <MRL | 0 | No PFAS detected |
| Whately Water Department | MA1337010 | South Deerfield | 900 | <MRL | <MRL | 0 | No PFAS detected |
| Whitinsville Water Company | MA2216000 | Whitinsville | 7,899 | <MRL | <MRL | 0 | No PFAS detected |
| Wilbraham Water Dept (Mwra) | MA1339000 | Wilbraham | 8,533 | <MRL | <MRL | 0 | No PFAS detected |
| Williamstown Water Dept | MA1341000 | Williamstown | 7,326 | <MRL | <MRL | 0 | No PFAS detected |
| Winchendon Water Department | MA2343000 | Winchendon | 5,706 | <MRL | <MRL | 0 | No PFAS detected |
| Winchester Water Dept | MA3344000 | Winchester | 22,970 | <MRL | <MRL | 0 | No PFAS detected |
| Winthrop Water Division, (Mwra) | MA3346000 | Winthrop | 19,316 | <MRL | <MRL | 0 | No PFAS detected |
Highest single result for each system; PFOA and PFOS in ppt (ng/L). Entry-point samples, not tap water; screening comparisons, not compliance determinations.