Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Big Flats Water District #2

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

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
2020ND30ND
2021ND60ND
2022ND30ND
2023ND20ND
2024ND60ND

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
2020-10-1420101578-01PFAND
2020-10-1420101578-02PFAND
2020-10-1420101578-03PFAND
2021-03-1721032031-03PFASND
2021-03-1721032031-02PFASND
2021-03-1721032031-01PFASND
2021-03-1721032031-04PFASND
2021-06-0921061475-01PFOND
2021-06-0921061475-01PFAND
2022-08-10S2H0422-01PFOSND
2022-08-10S2H0422-04PFOSND
2022-08-10S2H0422-07PFOSND
2023-05-1723051899-01PFOSND
2023-05-1723051899-03PFOSND
2024-02-12113268PND
2024-02-12113269PND
2024-02-12113270PND
2024-08-14119932PND
2024-08-14119933PND
2024-08-14119934PND