Know Your Environment. Protect Your Health.

Perfluorononanesulfonic acid (PFNS)

Charlevoix, City of

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
2018-08-30SWIN1808301300GGAND
2018-08-30SWEF1808301310GGAND
2019-05-02SWIN1905020900GGAND
2019-05-02SWEF1905020905GGAND
2019-05-31SWIN1905311000GGAND
2019-07-03SWIN1907031200GGAND
2019-07-25SWIN1907251220GSCND
2019-09-06SWIN1909060730GSCND
2019-09-30SWIN1909301100GGAND
2021-01-19SWIN2101190800GSCND
2021-03-04SWIN2103040730GSCND
2021-05-25SWIN2105250900GSCND
2021-07-30SWIN2107301230GSCND
2021-09-13SWIN2109131130GSCND