Know Your Environment. Protect Your Health.

Perfluorononanesulfonic acid (PFNS)

Grosse Pointe Farms

Perfluorononanesulfonic acid (PFNS) is a member of a class of chemicals called per- and polyfluoroalkyl substances or PFAS. These chemicals were used in the production of non-stick, stain repellent and chemically inert coatings. Click here to read more about perfluorinated chemicals.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND70ND
2020N/A00N/A
2021ND50ND
2022N/A00N/A
2023N/A00N/A

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppt

The EWG Health Guideline of 1 ppt for perfluorononanesulfonic acid (PFNS) was defined by EWG 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

All test results

Date Lab ID Result
2018-07-17SWIN1807171015GSCND
2018-07-17SWEF1807171020GSCND
2019-04-30SWIN1904301400GSCND
2019-04-30SWEF1904301405GSCND
2019-05-30SWIN1905300850MKND
2019-06-28SWIN1906280740GSCND
2019-07-30SWIN1907300815MKND
2019-08-27SWIN1908271155GSCND
2019-09-24SWIN1909241200GSCND
2021-01-21SWIN2101211300RGND
2021-03-08SWIN2103081415SKND
2021-05-12SWIN2105121125GSCND
2021-07-13SWIN2107131400GGAND
2021-09-14SWIN2109141330GGAND