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CONTAMINANT

Perfluoroheptane sulfonic acid (PFHpS)

FOUND

Exceeding guidelines

STATES DETECTED

11

serves

1.3 million

utilities detected

70

states detected

11

serves

1.3 million

utilities detected

70

Overview

Perfluoroheptane sulfonic acid (PFHpS) is a member of a group of perfluorinated chemicals used in many consumer products. PFHpS 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: 0.001 ppt

The EWG Health Guideline of 0.001 ppt for PFHpS was defined by EPA's recommended application of the PFHxS toxicity value published in the Integrated Risk Information System's toxicological review. This health guideline protects against harm to the developing immune system.

ppt = parts per trillion

National Standard Exists

Health Concerns:

  • Cancer

  • Harm to the immune system

  • Hormone disruption

  • Harm to fetal growth and child development

  • Harm to the liver

Want to remove
Perfluoroheptane sulfonic acid (PFHpS) from your water?

Try these filter technologies:

Activated Carbon, 

Reverse Osmosis, 

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Perfluoroheptane sulfonic acid (PFHpS) around the Country

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State Utilities People Served Utilities People Served
California8481,5008481,500
Wisconsin11283,55711283,557
New York28261,29428261,294
Minnesota8117,0458117,045
New Jersey161,700161,700
North Carolina448,090448,090
Utah314,800314,800
Texas113,701113,701
New Hampshire23,73523,735
Rhode Island24292429
Washington21962196

Utilities with the highest amounts of PFHpS, 2018-2024

ALL UTILITIES
LARGE UTILITIES
Utility Location Tests Average level People served
Whispering Pines Homeowners CoopCoupeville, WA1 of 12.67 ppt116
Ladd Center Water System*North Kingstown, RI1 of 22.37 ppt129
Exeter Job Corps CenterExeter, RI12 of 152.21 ppt300
Inwood Beach ClubPort Orchard, WA2 of 41.98 ppt80
NellistonNelliston, NY8 of 181.35 ppt726
Fort Plain*Fort Plain, NY8 of 181.35 ppt2,976
City of Goldsboro*Goldsboro, NC1 of 11.30 ppt34,959
Seymour Johnson Air Force BaseSeymour Johnson, NC1 of 11.30 ppt6,875
East Cedar Creek FWSD BrookshireMabank, TX1 of 41.23 ppt13,701
OakdaleOakdale, MN3 of 191.03 ppt28,303
Bells Pond Mobile Park NorthHudson, NY1 of 20.950 ppt150
City of Corona*Corona, CA24 of 1640.662 ppt168,751
Home Gardens County Water DistrictCorona, CA24 of 1640.662 ppt3,095
Weston Municipal UtilitiesWeston, WI2 of 20.634 ppt15,045
Selma, Town ofSelma, NC1 of 30.467 ppt6,190
Adams Waterworks*Adams, WI1 of 20.459 ppt1,847
Friendship WaterworksFriendship, WI1 of 20.459 ppt781
Middle Grove Mobile ParkClifton Park, NY1 of 10.400 ppt90
Jaffrey Water WorksJaffrey, NH2 of 130.373 ppt3,612
Marshfield UtilitiesMarshfield, WI3 of 140.356 ppt18,708
College View Mobile Home ParkWilmington, NC2 of 40.356 ppt66
Hoosick FallsHoosick Falls, NY11 of 690.287 ppt4,925
Saukville WaterworksSaukville, WI1 of 20.282 ppt4,465
Taconic Mobile Home Park LLCThomaston, NY1 of 70.243 ppt40
Taconic ShoresCopake, NY1 of 40.232 ppt950
PeasePease, MN9 of 290.210 ppt242
Prolyn Townhouse ApartmentsPlainview, NH1 of 20.200 ppt123
Sandridge Mobile Home ParkElbridge, NY1 of 20.190 ppt450
Waite ParkWaite Park, MN19 of 540.174 ppt8,341
Alpine EstatesRock City Falls, NY2 of 60.152 ppt40
City of LathropLathrop, CA1 of 130.146 ppt35,080
Jennie Clarkson HomeDobbs Ferry, NY5 of 250.136 ppt96
Sands PointPort Washington, NY5 of 300.132 ppt2,800
Albertson WDRoslyn Heights, NY2 of 130.128 ppt13,500
East Troy WaterworksEast Troy, WI1 of 50.126 ppt4,414
AlexandriaAlexandria, MN12 of 820.109 ppt13,554
East WillistonEast Williston, NY2 of 120.0940 ppt2,556
Williston Park*Williston Park, NY2 of 120.0940 ppt10,072
City of PleasantonPleasanton, CA1 of 210.0900 ppt79,871
City of LivermoreLivermore, CA1 of 210.0900 ppt35,672
California Water Service - LivermoreSan Jose, CA1 of 210.0900 ppt60,215
Zone 7 Water Agency*Livermore, CA1 of 210.0900 ppt40
Dublin San Ramon Services DistrictDublin, CA1 of 210.0900 ppt98,776
Ridgewood WaterRidgewood, NJ1 of 360.0830 ppt61,700
SwanvilleSwanville, MN2 of 90.0820 ppt351
Carle Place Water DistrictCarle Place, NY2 of 260.0500 ppt9,005
StillwaterStillwater, MN4 of 400.0420 ppt19,389
FarmingdaleFarmingdale, NY2 of 210.0350 ppt8,744
Port Washington WDPort Washington, NY9 of 1730.0340 ppt34,000
Locust Valley Water DistrictLocust Valley, NY2 of 320.0270 ppt7,500

* 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 Perfluoroheptane sulfonic acid (PFHpS), but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
City of Goldsboro*Goldsboro, NC1 of 11.30 ppt34,959
East Cedar Creek FWSD BrookshireMabank, TX1 of 41.23 ppt13,701
OakdaleOakdale, MN3 of 191.03 ppt28,303
City of Corona*Corona, CA24 of 1640.662 ppt168,751
Weston Municipal UtilitiesWeston, WI2 of 20.634 ppt15,045
Marshfield UtilitiesMarshfield, WI3 of 140.356 ppt18,708
City of LathropLathrop, CA1 of 130.146 ppt35,080
Albertson WDRoslyn Heights, NY2 of 130.128 ppt13,500
AlexandriaAlexandria, MN12 of 820.109 ppt13,554
Williston Park*Williston Park, NY2 of 120.0940 ppt10,072
City of PleasantonPleasanton, CA1 of 210.0900 ppt79,871
City of LivermoreLivermore, CA1 of 210.0900 ppt35,672
Dublin San Ramon Services DistrictDublin, CA1 of 210.0900 ppt98,776
California Water Service - LivermoreSan Jose, CA1 of 210.0900 ppt60,215
Ridgewood WaterRidgewood, NJ1 of 360.0830 ppt61,700
StillwaterStillwater, MN4 of 400.0420 ppt19,389
Port Washington WDPort Washington, NY9 of 1730.0340 ppt34,000
Glen Cove CityGlen Cove, NY2 of 600.0240 ppt28,000
Westbury WDWestbury, NY3 of 740.0240 ppt20,500
Bethlehem Water District No. 1*Delmar, NY1 of 280.0180 ppt62,062
MineolaMineola, NY2 of 560.0160 ppt20,600
Brooklyn CenterBrooklyn Center, MN1 of 400.0110 ppt33,782
New Windsor Consolidated WD*New Windsor, NY1 of 370.00900 ppt30,450
Sauk RapidsSauk Rapids, MN1 of 400.00600 ppt13,083
Madison Water Utility*Madison, WI1 of 560.00500 ppt235,000

* 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 Perfluoroheptane sulfonic acid (PFHpS), but it likely has the contaminant in its water supply.

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