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PFAS in drinking water: Massachusetts

EPA UCMR 5 results for 263 public water systems. 144 had at least one PFAS detected; 106 had a highest single PFOA or PFOS result above 4.0 ppt.

UCMR 5 is a one-time EPA monitoring program, not a compliance determination. The values shown are the highest single sample result at any of the system's sampling points; one result above 4.0 ppt does not mean the system violates the PFAS rule, which is judged on running annual averages under separate compliance monitoring. Results describe the public water system, not an individual home.

Water system	Serves	PFOA max (ppt)	PFOS max (ppt)	PFAS detected
Abington/Rockland Joint WTR. Works MA4001000	Abington	12	7	8
Acton Water Supply District MA2002000	Acton	13.4	4.9	8
Acushnet Water Department MA4003000	Acushnet	ND	ND	0
Adams Fire District MA1004000	Adams	ND	ND	0
Agawam Water Department MA1005000	Agawam	ND	ND	0
Amesbury DPW Water Div. MA3007000	Amesbury	ND	ND	0
Amherst DPW Water Division MA1008000	Amherst	ND	ND	0
Andover Water Dept MA3009000	Andover	ND	ND	1
Aquarion Water Company Oxford MA2226000	Oxford	ND	ND	1
Aquarion Water Company, Millbury MA2186000	Millbury	15.8	6.2	7
Arlington Water Dept. (MWRA) MA3010000	Arlington	ND	ND	0
Ash/Win Joint Water Authority MA2011004	Ashburnham	ND	ND	0
Ashburnham Water Department MA2011000	Ashburnham	ND	ND	0
Ashland Water & Sewer Dept. MA3014000	Ashland	ND	ND	1
Athol DPW Water Division MA1015000	Athol	ND	ND	0
Attleboro Water Dept MA4016000	Attleboro	6.6	12	5
Auburn Water District, MA MA2017000	Auburn	5.7	4.7	4
Ayer DPW Water Division MA2019000	Ayer	ND	ND	3
Barnstable Fire District MA4020000	Barnstable	4.4	7.1	6
Barre Water Department MA2021000	Barre	ND	ND	0
Bedford Water Dept. MA3023000	Bedford	ND	ND	0
Belchertown Water District MA1024000	Belchertown	ND	ND	0
Bellingham DPW Water Sewer Div. MA2025000	Bellingham	4.3	5	3
Belmont Water Dept. (MWRA) MA3026000	Belmont	ND	ND	0
Beverly Water Dept MA3030000	Beverly	ND	ND	2
Billerica Water Works MA3031000	Billerica	5.5	ND	5
Blackstone Water Department MA2032000	Blackstone	5.7	ND	1
Boston Water and Sewer Commission (MWRA) MA3035000	Boston	ND	ND	0
Bourne Water District MA4036000	Bourne	ND	4.8	3
Boylston Water District MA2039000	Boylston	6	ND	2
Braintree Water and Sewer Dept. MA4040000	Braintree	5.3	8.5	5
Brewster Water Department MA4041000	Brewster	ND	ND	0
Bridgewater Water Department MA4042000	Bridgewater	9	7	7
Brockton Water Department MA4044000	Brockton	ND	ND	0
Brookline Water and Sewer Division MA3046000	Brookline	ND	ND	0
Burlington Water Dept MA3048000	Burlington	ND	ND	1
Buzzards Bay Water District MA4036001	Bourne	ND	ND	0
Cambridge Water Department MA3049000	Cambridge	4.8	ND	3
Canton Water Dept MA4050000	Canton	5	ND	4
Centerville Osterville Marstons Mills WD MA4020002	Barnstable	4.9	ND	5
Chatham Water Department MA4055000	Chatham	ND	ND	0
Chelmsford Water District MA3056000	Chelmsford	8.9	7.2	5
Chelsea Water Dept. (MWRA) MA3057000	Chelsea	ND	ND	0
Cherry Valley/ Rochdale Water District MA2151001	Leicester	ND	ND	2
Chicopee Water Dept (MWRA) MA1061000	Chicopee	ND	ND	0
City of New Bedford Dpi MA4201000	New Bedford	ND	ND	1
Clinton Water Dept MA2064000	Clinton	ND	ND	0
Cohasset Water Dept MA4065000	Cohasset	6.7	4.5	5
Concord Water Dept, MA MA3067000	Concord	6	ND	4
Cotuit Fire District Water Department MA4020003	Barnstable	ND	ND	0
Dalton Fire District MA1070000	Dalton	ND	ND	0
Danvers Water Dept. MA3071000	Danvers	ND	5.2	1
Dartmouth Water Division MA4072000	Dartmouth	4.2	50.6	7
Dedham Westwood Water Dist. MA3073000	Dedham	6.5	5.1	4
Dennis Water District MA4075000	Dennis	ND	ND	2
Devens Massdevelopment MA2019001	Ayer	ND	ND	2
Dighton Water District MA4076000	Dighton	5.5	4.1	4
Douglas Water Department MA2077000	Douglas	4	ND	4
Dracut Water Supply District MA3079000	Dracut	6.1	ND	3
Dudley Water Department MA2080000	Dudley	ND	ND	0
Duxbury Water Department MA4082000	Duxbury	7.5	35	10
East Bridgewater Water Dept. MA4083000	East Bridgewater	5.1	ND	3
East Longmeadow DPW Water Dept MA1085000	East Longmeadow	ND	ND	0
Easthampton Water Dept MA1087000	Easthampton	ND	ND	0
Easton Water Div MA4088000	Easton	9.9	16.3	6
Edgartown Water Department MA4089000	Edgartown	ND	ND	0
Everett Water Dept. (MWRA) MA3093000	Everett	ND	ND	0
Fairhaven Water Dept MA4094000	Fairhaven	ND	ND	0
Fall River Water Department MA4095000	Fall River	ND	ND	0
Falmouth Water Dept MA4096000	Falmouth	ND	ND	0
Fitchburg DPW, Div. of Water Supply MA2097000	Fitchburg	4.9	ND	3
Foxboro Water Department MA4099000	Foxborough	6.3	6.7	5
Framingham Water Dept. (MWRA) MA3100000	Framingham	ND	ND	0
Franklin Water Department, MA MA2101000	Franklin	4.7	5.6	5
Gardner Water Department MA2103000	Gardner	ND	ND	0
Georgetown Water Department MA3105000	Georgetown	ND	ND	0
Gloucester Public Utility Division MA3107000	Gloucester	ND	ND	0
Grafton Water District MA2110000	Grafton	6.9	6.9	5
Great Barrington Fire Dist MA1113000	Great Barrington	ND	ND	0
Greenfield Water Department MA1114000	Greenfield	ND	ND	0
Groton Water Department MA2115000	Groton	ND	ND	1
Groveland Water Department MA3116000	Groveland	6.3	ND	4
Hadley DPW Water Division MA1117002	Hadley	ND	ND	0
Halifax Water Department MA4118000	Halifax	7.7	4.8	6
Hamilton Water Dept MA3119000	Hamilton	11.1	11.2	5
Hanover Water Dept, MA MA4122000	Hanover	8.9	11.4	7
Hanscom AFB MA3023002	Bedford	ND	ND	0
Hanson Water Department MA4123000	Hanson	5.6	4	2
Harwich Water Department MA4126000	Harwich	ND	ND	0
Hatfield Water Dept MA1127000	Hatfield	ND	ND	4
Haverhill Water Dept MA3128000	Haverhill	ND	ND	0
Haystack Estates MA3330019	Westford	5.6	ND	4
Holbrook Public Works Dept MA4133000	Holbrook	7	11.9	7
Holden Water Division, DPW MA2134000	Holden	4.9	ND	5
Holliston Water Department MA2136000	Holliston	5.3	6.5	5
Holyoke Water Works MA1137000	Holyoke	ND	ND	0
Hopedale Water Department MA2138000	Hopedale	6.8	4.3	4
Hopkinton Water Department MA2139000	Hopkinton	7.2	ND	5
Hudson Water Supply MA2141000	Hudson	ND	ND	1
Hyannis Water System, Town of Barnstable MA4020004	Barnstable	ND	ND	3
Inima USA / Aquaria LLC MA4076004	Dighton	ND	ND	0
Ipswich Dpu Water Dept MA3144000	Ipswich	7.3	ND	6
Kenwood Water District MA3079001	Dracut	6.3	ND	4
Kingston Water Department MA4145000	Kingston	ND	ND	0
Lancaster Water Department MA2147000	Lancaster	ND	ND	0
Lawrence Water Works MA3149000	Lawrence	ND	ND	2
Lee Water Dept MA1150000	Lee	ND	ND	0
Lenox DPW Water Division MA1152000	Lenox	ND	ND	0
Leominster Water Division MA2153000	Leominster	4.3	ND	1
Lexington Water Dept. (MWRA) MA3155000	Lexington	ND	ND	0
Lincoln Water Dept MA3157000	Lincoln	6.4	5.4	3
Littleton Water Department MA2158000	Littleton	ND	ND	0
Longmeadow Water Dept MA1159000	Longmeadow	ND	ND	0
Lowell Regional Water Utility MA3160000	Lowell	4.6	ND	3
Lunenburg Water District MA2162000	Lunenburg	5.1	ND	3
Lynn Water and Sewer Comm MA3163000	Lynn	4.7	ND	5
Lynnfield Center Water District MA3164000	Lynnfield	6.1	ND	4
Lynnfield Water Dist. (MWRA) MA3164001	Lynnfield	ND	ND	0
MCI Norfolk/Cedar Junction/Walpole MA2208001	Norfolk	ND	ND	0
MCI Shirley MA2270001	Shirley	ND	ND	1
Malden Water Division (MWRA) MA3165000	Malden	ND	ND	0
Manchester By the Sea DPW MA3166000	Manchester	12	4.8	6
Mansfield Water Division MA4167000	Mansfield	4.3	6.2	4
Marblehead Water Dept. (MWRA) MA3168000	Marblehead	ND	ND	0
Marion Water Division MA4169000	Marion	ND	ND	0
Marlborough DPW Water Div. (MWRA) MA2170000	Marlborough	ND	ND	0
Marshfield Water Department MA4171000	Marshfield	7	4.6	7
Mashpee Water District MA4172039	Mashpee	ND	ND	1
Mattapoisett River Valley W.D. MA4173001	Mattapoisett	ND	ND	0
Mattapoisett Water Department MA4173000	Mattapoisett	ND	ND	0
Maynard DPW, Water Division MA2174000	Maynard	7.1	4.2	5
Medfield Water Dept. MA2175000	Medfield	7	6.7	5
Medford Water Dept. (MWRA) MA3176000	Medford	ND	ND	0
Medway Water Department MA2177000	Medway	7.2	ND	4
Melrose Water Division (MWRA) MA3178000	Melrose	ND	ND	0
Merrimac Water Department MA3180000	Merrimac	6.9	ND	1
Methuen Water Dept MA3181000	Methuen	4	ND	3
Middleborough Water Supply MA4182000	Middleborough	11	5	8
Middleton Water Dept. MA3184000	Middleton	4.5	ND	5
Milford Water Company MA2185000	Milford	7.1	6.6	5
Millis Water Dept MA2187000	Millis	6.9	7.3	5
Milton Water Dept. (MWRA) MA3189000	Milton	ND	ND	0
Monson Water and Sewer Dept MA1191000	Monson	ND	ND	0
Mt Greylock Regional School MA1341010	Williamstown	ND	ND	0
Nahant Water Dept. (MWRA) MA3196000	Nahant	ND	ND	0
Natick Water Department MA3198000	Natick	14.3	37.3	6
Needham Water Dept MA3199000	Needham	4.6	5	2
Newburyport Water Department MA3206000	Newburyport	ND	4.6	2
Newton Water Dept. (MWRA) MA3207000	Newton	ND	ND	0
Norfolk Water Division MA2208000	Norfolk	7	4.5	5
North Adams Water Dept MA1209000	North Adams	5.9	ND	1
North Andover Water Dept MA3210000	North Andover	ND	ND	0
North Attleboro Water Dept MA4211000	North Attleborough	9	8	8
North Brookfield Water Department MA2212000	North Brookfield	ND	ND	0
North Chelmsford Water Dist MA3056002	Chelmsford	ND	ND	0
North Raynham Water District MA4245002	Raynham	ND	ND	1
North Reading Water Dept. MA3213000	North Reading	ND	ND	3
North Sagamore Water District MA4036002	Bourne	ND	ND	2
Northampton Water Dept MA1214000	Northampton	ND	ND	0
Northborough Water Department (MWRA) MA2215000	Northborough	ND	ND	0
Northbridge Water Division MA2216006	Northbridge	ND	ND	0
Norton Water Department MA4218000	Norton	8.8	4	7
Norwell Water Department MA4219000	Norwell	9.9	18.4	7
Norwood Water Dept. (MWRA) MA4220000	Norwood	ND	ND	0
Oak Bluffs Water District MA4221000	Oak Bluffs	ND	ND	2
Onset Fire District MA4310003	Wareham	ND	7.1	1
Orange Water Dept MA1223000	Orange	ND	ND	1
Orleans Water Department MA4224000	Orleans	ND	ND	0
Otis Air National Guard Base MA4096001	Falmouth	ND	ND	0
Palmer Water District No.1 MA1227000	Palmer	ND	ND	0
Paxton Water Department MA2228000	Paxton	ND	ND	3
Peabody Water Dept. MA3229000	Peabody	7	ND	5
Pembroke Water Division DPW MA4231000	Pembroke	ND	ND	2
Pepperell DPW Water Division MA2232000	Pepperell	11.4	10	2
Pinehills Water Company, Inc. MA4239055	Plymouth	ND	ND	1
Pittsfield Dpu Water Dept MA1236000	Pittsfield	ND	ND	0
Plainville Water Department MA4238000	Plainville	4.3	5.9	4
Plymouth Water Department, MA MA4239000	Plymouth	ND	ND	2
Provincetown Water Department MA4242000	Provincetown	ND	ND	0
Quincy Water Dept. (MWRA) MA3243000	Quincy	ND	ND	0
Randolph Water Department MA4244000	Randolph	7.3	13	6
Raynham Center Water District MA4245000	Raynham	92	ND	7
Reading Water Department MA3246000	Reading	ND	ND	0
Revere Water Division (MWRA) MA3248000	Revere	ND	ND	1
Rockport Water Dept MA3252000	Rockport	ND	ND	0
Rowley Water Department MA3254000	Rowley	7.7	5.7	7
Rutland Water Department MA2257000	Rutland	ND	ND	0
Salem Water Department, MA MA3258000	Salem	ND	ND	2
Salisbury Water Department MA3259000	Salisbury	6	ND	3
Sandwich Water District MA4261000	Sandwich	ND	ND	0
Saugus Water Dept. (MWRA) MA3262000	Saugus	ND	ND	0
Scituate Water Division MA4264000	Scituate	5.6	5.7	4
Seekonk Water District MA4265000	Seekonk	ND	5	1
Sharon Water Dept MA4266000	Sharon	8.1	15	6
Shirley Water District MA2270000	Shirley	6.9	ND	5
Shrewsbury Water Department MA2271000	Shrewsbury	5.4	5.6	5
Somerset Water Department MA4273000	Somerset	ND	ND	0
Somerville Water Dept. (MWRA) MA3274000	Somerville	ND	ND	0
South Deerfield Water Supply District MA1074001	Deerfield	ND	ND	0
South Hadley FD #1 (MWRA) MA1275000	South Hadley	ND	ND	0
South Hadley Fire District #2 Water Dept MA1275001	South Hadley	ND	ND	0
Southampton Water Dept MA1276000	Southampton	ND	ND	0
Southborough DPW Water Division (MWRA) MA2277000	Southborough	ND	ND	0
Southbridge Tool and Manufacturing MA2080006	Dudley	ND	ND	0
Southbridge Water Department MA2278000	Southbridge	ND	ND	1
Southwick Water Dept MA1279000	Southwick	ND	ND	0
Spencer Water Department MA2280000	Spencer	ND	ND	0
Springfield Water and Sewer Commission MA1281000	Springfield	ND	ND	0
Sterling Water Department MA2282000	Sterling	ND	5.2	1
Stoneham Water Dept (MWRA Supply) MA3284000	Stoneham	ND	ND	0
Stoughton Water Department MA4285000	Stoughton	7.7	7.1	5
Sturbridge Water Department MA2287000	Sturbridge	ND	ND	0
Sudbury Water District MA3288000	Sudbury	9	ND	6
Swampscott Water Dept. (MWRA) MA3291000	Swampscott	ND	ND	0
Swansea Water District MA4292000	Swansea	5.1	ND	6
Taunton Water Division MA4293000	Taunton	ND	ND	0
Templeton Munic. Light and Water Plant MA2294000	Templeton	5.2	ND	4
Tewksbury Water Department MA3295000	Tewksbury	5	ND	3
Tisbury Water Works MA4296000	Tisbury	ND	ND	0
Topsfield Water Department MA3298000	Topsfield	9	5.4	5
Town of Avon MA4018000	Avon	5.1	6	2
Town of Eastham MA4086095	Eastham	ND	ND	0
Townsend Water Department MA2299000	Townsend	6.5	ND	3
Turners Falls Water Dept MA1192000	Montague	ND	ND	0
Tyngsborough Water District MA3301000	Tyngsborough	4.6	ND	3
Upper Cape Regional Water Cooperative MA4261024	Sandwich	ND	ND	0
Upton DPW Water/Wastewater Division MA2303000	Upton	ND	ND	0
Uxbridge DPW, Water Division MA2304000	Uxbridge	ND	6.7	3
Wakefield Water Dept MA3305000	Wakefield	6.9	ND	3
Walpole Water Dept MA4307000	Walpole	4	4	6
Waltham Water Department MA3308000	Waltham	ND	ND	0
Wannacomet Water Company MA4197000	Nantucket	ND	ND	0
Ware Water Dept MA1309000	Ware	4.9	7.1	4
Wareham Fire District MA4310000	Wareham	ND	ND	0
Watertown Water Dept. (MWRA) MA3314000	Watertown	ND	ND	0
Wayland Water Department MA3315000	Wayland	9	4	6
Webster Water Department MA2316000	Webster	4.4	ND	3
Weir River Water System MA4131000	Hingham	6.4	ND	5
Wellesley Water Division MA3317000	Wellesley	6.3	6.6	6
Wenham Water Dept. MA3320000	Wenham	7.2	6.4	5
West Boylston Water District MA2321000	West Boylston	5.4	ND	3
West Bridgewater Water Dept MA4322000	West Bridgewater	5.5	ND	5
West Newbury Water Department MA3324000	West Newbury	ND	ND	0
West Springfield DPW Water Division MA1325000	West Springfield	ND	ND	0
Westborough Water Department MA2328000	Westborough	5.8	7.5	3
Westfield Water Dept MA1329000	Westfield	ND	ND	1
Westford Water Department MA3330000	Westford	8.6	4.4	5
Westminster Department of Public Works MA2332000	Westminster	ND	ND	0
Weston Water Dept. MA3333000	Weston	ND	ND	0
Weymouth Water Department MA4336000	Weymouth	ND	ND	1
Whately Water Department MA1337010	Whately	ND	ND	0
Whitinsville Water Company MA2216000	Northbridge	ND	ND	0
Whitman Water System MA4338000	Whitman	ND	ND	4
Wilbraham Water Dept (MWRA) MA1339000	Wilbraham	ND	ND	0
Williamstown Water Dept MA1341000	Williamstown	ND	ND	0
Wilmington Water Dept MA3342000	Wilmington	ND	ND	2
Winchendon Water Department MA2343000	Winchendon	ND	ND	0
Winchester Water Dept MA3344000	Winchester	ND	ND	0
Winthrop Water Division, (MWRA) MA3346000	Winthrop	ND	ND	0
Woburn Water Dept. MA3347000	Woburn	8.4	6.9	6
Worcester DPWP, Water Supply Division MA2348000	Worcester	ND	ND	1
Wrentham Water Division MA4350000	Wrentham	5.7	4.4	5
Yarmouth Water Department MA4351000	Yarmouth	ND	ND	5

ND = not detected (below the 4 ppt UCMR 5 reporting level). Values are the highest single sample result, not an annual average.

Source: EPA UCMR 5 final occurrence data (EPA page last updated 2026-08-28; samples collected January 2023 – December 2025) ↗.

PFAS disclaimer: PFAS results are copied from EPA's UCMR 5 dataset and describe samples taken at a public water system's entry points between 2023 and 2025, not water at any specific address. Levels may have changed since sampling (for example, after new treatment). “Not detected” means below EPA's UCMR 5 minimum reporting level, not zero. This is not a compliance determination or a water test. Contact your water utility for current information.