Know Your Environment. Protect Your Health.

Perfluorooctanoic acid (PFOA)

West Sound Utility District #1

Perfluorooctanoic acid (PFOA) is a member of a group of perfluorinated chemicals used in many consumer products. PFOA 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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
20230.300 ppt202ND - 3.30 ppt
20240.713 ppt81ND - 5.70 ppt

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.09 ppt

The EWG Health Guideline of 0.09 ppt for PFOA was 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
2023-07-054480111ND
2023-07-054480109ND
2023-07-054480109ND
2023-07-0544801153.30 ppt
2023-07-054480104ND
2023-07-054480110ND
2023-07-054480113ND
2023-07-054480113ND
2023-07-054480113ND
2023-07-054480106ND
2023-07-054480106ND
2023-07-054480108ND
2023-11-1545488042.70 ppt
2023-12-20380-76081-2ND
2023-12-20380-76089-1ND
2023-12-20380-76089-3ND
2023-12-20380-76087-1ND
2023-12-20380-76089-2ND
2023-12-20380-76087-2ND
2023-12-20380-76081-1ND
2024-06-25380-101456-1ND
2024-06-25380-101456-5ND
2024-06-25380-101466-1ND
2024-06-25380-101456-4ND
2024-06-25380-101456-3ND
2024-06-25380-101456-25.70 ppt
2024-07-29380-106285-1ND
2024-07-29380-106289-1ND