Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Minnetonka

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021ND100ND
20220.108 ppt91ND - 0.970 ppt
2023ND50ND
2024ND70ND

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
2021-06-2421F1556-02ND
2021-06-2421F1556-03ND
2021-06-2421F1556-04ND
2021-06-2421F1556-05ND
2021-06-2421F1556-06ND
2021-06-2421F1556-07ND
2021-06-2421F1556-08ND
2021-06-2421F1556-09ND
2021-06-2421F1556-10ND
2021-06-2421F1556-01ND
2022-06-0222F0212-07ND
2022-06-0222F0212-09ND
2022-06-0222F0212-08ND
2022-06-0222F0212-06ND
2022-06-0222F0212-04ND
2022-06-0222F0212-03ND
2022-06-0222F0212-01ND
2022-06-0222F0212-05ND
2022-09-0822I0503-010.970 ppt
2023-08-0132302633-7ND
2023-08-0132302633-9ND
2023-08-0132302633-5ND
2023-08-0132302633-3ND
2023-08-0132302633-1ND
2024-02-1432400433001ND
2024-02-1432400433007ND
2024-02-1432400433009ND
2024-02-1432400433011ND
2024-02-1432400433003ND
2024-02-1432400433005ND
2024-02-1432400433013ND