Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Blue Waters Leisure Park

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
20220.273 ppt42ND - 0.590 ppt
20230.628 ppt440.500 ppt - 0.790 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
2022-01-1922A0780-01ND
2022-01-1922A0780-02ND
2022-11-0322K0278-010.590 ppt
2022-11-0322K0278-020.500 ppt
2023-03-1623C0818-010.500 ppt
2023-06-1423F1329-010.790 ppt
2023-08-0223H0294-010.550 ppt
2023-10-2323J1140-010.670 ppt