Know Your Environment. Protect Your Health.

Perfluorooctanoic acid (PFOA)

Lake County Public Water District

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND30ND
20210.820 ppt52ND - 2.10 ppt
20222.45 ppt222.40 ppt - 2.50 ppt
2023N/A00N/A

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
2020-11-094771346ND
2020-12-154797442ND
2020-12-154797444ND
2021-01-194816765ND
2021-10-05810-4275-12.00 ppt
2021-10-05810-4275-2ND
2021-10-05810-4275-32.10 ppt
2021-10-05810-4275-4ND
2022-02-07810-14325-12.40 ppt
2022-02-28810-16254-12.50 ppt