Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Charlevoix, City of

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.667 ppt31ND - 2.00 ppt
2019ND130ND
2020ND10ND
20210.286 ppt71ND - 2.00 ppt
2022ND40ND
20230.400 ppt51ND - 2.00 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
2018-08-30SWEF1808301310GGAND
2018-08-30SWEF1808301310GGA2.00 ppt
2018-08-30SWIN1808301300GGAND
2019-05-02SWEF1905020905GGAND
2019-05-02SWEF1905020905GGAND
2019-05-02SWIN1905020900GGAND
2019-05-31SWEF1905311005GGAND
2019-05-31SWIN1905311000GGAND
2019-07-03SWEF1907031205GGAND
2019-07-03SWIN1907031200GGAND
2019-07-25SWEF1907251220GSCND
2019-07-25SWIN1907251220GSCND
2019-09-06SWIN1909060730GSCND
2019-09-06SWEF1909060735GSCND
2019-09-30SWIN1909301100GGAND
2019-09-30SWEF1909301105GGAND
2020-10-06LJ27595ND
2021-01-19SWIN2101190800GSCND
2021-03-04SWIN2103040730GSCND
2021-04-21ND
2021-04-21LJ52948ND
2021-05-25SWIN2105250900GSCND
2021-07-30SWIN2107301230GSCND
2021-09-13SWIN2109131130GSC2.00 ppt
2022-07-11ND
2022-07-11LK21403ND
2022-10-12ND
2022-10-12LK39750ND
2023-01-17LK51807ND
2023-01-17ND
2023-04-25ND
2023-07-112.00 ppt
2023-10-17ND