Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Bridgman

Perfluorooctane sulfonate (PFOS) is a member of a group of perfluorinated chemicals used in many consumer products. PFOS 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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.667 ppt31ND - 2.00 ppt
20190.154 ppt131ND - 2.00 ppt
2020N/A00N/A
20211.000 ppt136ND - 3.00 ppt
2022ND20ND
20232.00 ppt112.00 ppt

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.3 ppt

The EWG Health Guideline of 0.3 ppt for PFOS was defined by EPA's final toxicity value from the Office of Water’s Final Human Health Toxicity Assessment. This health guideline protects againat cardiovascular harm and harm to fetal growth.

EPA Maximum Contaminant
Level (MCL): 4 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2018-07-19SWIN1807191030GGA2.00 ppt
2018-07-19SWEF1807191020GGAND
2018-07-19SWEF1807191020GGAND
2019-04-24SWEF1904241115KERND
2019-04-24SWEF1904241115KERND
2019-04-24SWIN1904241110KERND
2019-05-28SWIN1905291110KERND
2019-05-29SWEF1905291115KERND
2019-06-26SWIN1906261110KERND
2019-06-26SWEF1906261120KER2.00 ppt
2019-07-22SWIN1907221250GSCND
2019-07-22SWEF1907221255GSCND
2019-08-28SWIN1908281400GGAND
2019-08-28SWEF1908281405GGAND
2019-09-26SWEF1909261400KMEND
2019-09-26SWIN1909261355KMEND
2021-01-19SWIN2101191025RGND
2021-01-20LLJ421642.00 ppt
2021-01-20LJ421643.00 ppt
2021-03-11SWIN2103111135RGND
2021-05-20SWIN2105201020GSCND
2021-06-16LLJ619762.00 ppt
2021-06-162.00 ppt
2021-07-19SWIN2107191030GGAND
2021-09-07SWIN2109070950GSCND
2021-09-14LJ784942.00 ppt
2021-09-142.00 ppt
2021-11-17ND
2021-11-17LJ89244ND
2022-02-10LJ99593ND
2022-02-10ND
2023-06-222.00 ppt