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CONTAMINANT

N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)

FOUND

Exceeding guidelines

STATES DETECTED

10

serves

1.8 million

utilities detected

144

states detected

2

serves

9,877

utilities detected

2

Overview

N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) is a member of a group of perfluorinated chemicals used in many consumer products. NMeFOSAA and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppt

The EWG Health Guideline of 1 ppt for NMeFOSAA was defined by EWG as based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water.

ppt = parts per trillion

National Standard Exists

Health Concerns:

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N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) from your water?

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N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) around the Country

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State Utilities People Served Utilities People Served
Massachusetts00871,291,065
California009284,432
Wisconsin00470,721
New York001347,464
Alabama19,741631,899
Michigan001828,582
Colorado0038,285
North Carolina0025,851
Illinois0011,595
New Hampshire11361136

Utilities with the highest amounts of NMeFOSAA, 2018-2024

ALL UTILITIES
LARGE UTILITIES
Utility Location Tests Average level People served
Montevallo Water Works & SewerMontevallo, AL2 of 229.55 ppt9,741
Bath Village Water WorksBath, NH1 of 14.80 ppt136
Red Creek North SaWalworth, NY1 of 21.75 ppt36
Red Creek Village*Walworth, NY1 of 21.75 ppt535
Sandridge Mobile Home ParkElbridge, NY1 of 41.63 ppt450
Seekonk Water DistrictSeekonk, MA16 of 211.51 ppt13,627
Ariton Water WorksAriton, AL1 of 61.05 ppt1,263
Altona Correctional FacilityAltona, NY1 of 10.964 ppt800
Hillcrest Village Mobile Home ParkWheat Ridge, CO1 of 30.933 ppt1,505
Zweifels Country ViewDodgeville, WI1 of 10.930 ppt40
Alberta SubdivisionThiensville, WI1 of 20.900 ppt75
Satsuma Water WorksSatsuma, AL1 of 120.825 ppt7,248
SchoolcraftSchoolcraft, MI1 of 40.650 ppt1,525
Morleys Mobile ParkOgdensburg, NY1 of 60.633 ppt150
Yankee Springs MeadowsFarmington Hills, MI1 of 40.625 ppt710
Kent Ridge ApartmentsCedar Springs, MI1 of 40.600 ppt120
Mcti Family HousingPlainwell, MI1 of 40.600 ppt40
Portage TerraceGranger, MI1 of 50.560 ppt202
Great Lakes Adventist AcademyCedar Lake, MI1 of 80.525 ppt360
Chapel Ridge S/dDenver, NC1 of 40.450 ppt798
Pittsboro, Town of*Pittsboro, NC1 of 40.450 ppt5,053
HartfordHartford, MI1 of 120.442 ppt2,688
Leisure VillageSouthfield, MI1 of 70.429 ppt365
BronsonBronson, MI1 of 50.400 ppt2,421
MiddlevilleMiddleville, MI1 of 180.389 ppt3,309
Cornwall-on-hudson*Cornwall-on-hudson, NY2 of 140.328 ppt9,500
Baldwin, Village ofBaldwin, MI2 of 280.304 ppt1,060
Caledonia TownshipCaledonia, MI1 of 100.280 ppt4,573
Dykeer Water CompanyMerrick, NY2 of 80.257 ppt480
Castlewood Domestic Water SystemRoseville, CA1 of 140.243 ppt524
Sfpuc-pleasanton Wells*Burlingame, CA1 of 140.243 ppt1
Shore Estates Owners Association Inc.Mahopac, NY1 of 50.238 ppt60
BangorBangor, MI1 of 180.222 ppt2,000
FremontFremont, MI1 of 260.212 ppt4,516
Crockery Mobile Home ParkBloomfield Hills, MI1 of 180.206 ppt413
Carbondale, Town of*Carbondale, CO1 of 30.190 ppt6,700
Satank WaFort Collins, CO1 of 30.190 ppt80
Cheshire Water DepartmentCheshire, MA1 of 40.185 ppt1,407
Munford Water Authority Inc.Munford, AL1 of 100.180 ppt4,467
Whispering PinesBelmont, MI1 of 190.179 ppt125
Douglas Water DepartmentDouglas, MA2 of 130.177 ppt3,855
Evergreen Mobile Home CommunityNashville, MI1 of 190.168 ppt272
Grove Hill Water WorksGrove Hill, AL1 of 250.156 ppt5,280
Prairie Path Water Company-oakwoodMchenry, IL1 of 160.144 ppt1,595
Pinewood On The Green CondosOxford, MA1 of 70.117 ppt50
Bellflower Home Gardens Water CompanyBellflower, CA1 of 320.103 ppt1,129
Bellflower - Somerset MWC*Bellflower, CA1 of 320.103 ppt46,300
Ardmore Water SystemArdmore, AL1 of 290.103 ppt3,900
Acushnet Water DepartmentAcushnet, MA1 of 90.101 ppt7,911
New Bedford Department of Public Infrastructure*New Bedford, MA1 of 90.101 ppt95,072

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA), but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Seekonk Water DistrictSeekonk, MA16 of 211.51 ppt13,627
Bellflower - Somerset MWC*Bellflower, CA1 of 320.103 ppt46,300
New Bedford Department of Public Infrastructure*New Bedford, MA1 of 90.101 ppt95,072
Dartmouth Water DivisionDartmouth, MA1 of 90.101 ppt24,272
City of Loma LindaLoma Linda, CA1 of 400.0700 ppt24,791
Westborough Water DepartmentWestborough, MA2 of 650.0700 ppt18,272
Wausau WaterworksWausau, WI1 of 60.0680 ppt39,106
Haverhill Water DepartmentHaverhill, MA1 of 190.0680 ppt57,311
Billerica Water WorksBillerica, MA2 of 320.0670 ppt40,243
Abington/rockland Joint Water WorksRockland, MA4 of 890.0590 ppt33,887
Norwalk Water DepartmentNorwalk, CA1 of 470.0530 ppt17,790
Pico WDPico Rivera, CA1 of 500.0500 ppt22,051
Uxbridge DPW Water DivisionUxbridge, MA2 of 600.0400 ppt10,715
Whitman Water SystemWhitman, MA1 of 280.0390 ppt14,574
Brockton Water Commission*Brockton, MA1 of 280.0390 ppt93,810
Danvers Water Department*Middleton, MA1 of 330.0380 ppt26,493
West Bend WaterworksWest Bend, WI1 of 110.0380 ppt31,500
East Bridgewater Water DepartmentEast Bridgewater, MA1 of 200.0340 ppt13,794
Middleborough Water Supply*Middleborough, MA2 of 810.0310 ppt16,470
Ipswich DPU Water DepartmentIpswich, MA3 of 760.0300 ppt13,127
Dedham Westwood Water DistrictDedham, MA3 of 970.0290 ppt42,581
Northampton Water DepartmentNorthampton, MA1 of 310.0290 ppt28,548
Natick Water Department*Natick, MA10 of 4150.0290 ppt36,137
Concord Water DepartmentConcord, MA1 of 670.0270 ppt16,402
Hanover Water DepartmentHanover, MA2 of 680.0270 ppt14,899
Shrewsbury Water DepartmentShrewsbury, MA2 of 820.0250 ppt35,608
Easton Water Div*Easton, MA5 of 1630.0240 ppt23,112
Woburn Water Department (MWRA)Woburn, MA2 of 720.0210 ppt38,120
Bourne Water District*Pocasset, MA2 of 770.0200 ppt22,500
Bridgewater Water DepartmentBridgewater, MA2 of 1450.0200 ppt26,563
Webster Water DepartmentWebster, MA2 of 820.0180 ppt16,767
Sudbury Water DistrictSudbury, MA3 of 1350.0170 ppt18,410
Walpole Water DepartmentWalpole, MA1 of 630.0160 ppt23,989
Mashpee Water District*Mashpee, MA1 of 400.0140 ppt34,681
North Attleboro Water Department*North Attleborough, MA2 of 1440.0130 ppt28,712
Duxbury Water Department*Duxbury, MA1 of 900.0120 ppt16,445
Fort Drum*Fort Drum, NY1 of 760.00900 ppt34,400
Maynard DPW, Water DivisionMaynard, MA1 of 880.00900 ppt10,665
Wellesley Water Division (MWRA)*Wellesley, MA1 of 830.00800 ppt29,100
Acton Water Supply DistrictActon, MA2 of 1990.00700 ppt20,890
City of Corona*Corona, CA1 of 4820.00500 ppt168,751
Yarmouth Water DepartmentWest Yarmouth, MA1 of 1150.00500 ppt39,635
Chatham Water DepartmentChatham, MA1 of 1470.00500 ppt30,000
Franklin Water DepartmentFranklin, MA1 of 1610.00400 ppt32,445
Wayland Water DepartmentWayland, MA1 of 1490.00400 ppt14,430

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA), but it likely has the contaminant in its water supply.

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