Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Swan Lake Resort

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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND80ND
2020ND80ND
2021ND20ND
2022ND60ND
2023ND80ND

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
2019-01-234183445ND
2019-01-234183443ND
2019-05-094298558ND
2019-05-094298560ND
2019-08-2035492692001ND
2019-08-2035492689001ND
2019-11-1935514606001ND
2019-11-1935514602001ND
2020-01-2910507046001ND
2020-01-2910507037001ND
2020-05-2110519679001ND
2020-05-2110519671001ND
2020-09-1010532334001ND
2020-09-1010532333001ND
2020-11-1210540025001ND
2020-11-1210540005001ND
2021-02-0110547152001ND
2021-02-0110547129001ND
2022-01-2010595130001ND
2022-01-2010595132001ND
2022-08-09810-33487-1ND
2022-08-09810-33475-1ND
2022-10-04810-40336-1ND
2022-10-11810-41109-1ND
2023-01-04810-49397-1ND
2023-01-17810-50599-1ND
2023-04-06810-58911-1ND
2023-04-06810-58911-3ND
2023-07-12810-69390-1ND
2023-07-12810-69390-3ND
2023-10-05810-80553-1ND
2023-10-05810-80553-3ND