Know Your Environment. Protect Your Health.

N-ethyl perfluorooctane sulfonamido acetic acid (N-EtFOSAA)

California Water Service Company Oak Hills

N-ethyl perfluorooctane sulfonamido acetic acid (N-EtFOSAA) is a member of a group of perfluorinated chemicals used in many consumer products. N-EtFOSAA 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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND30ND
2021N/A00N/A
2022N/A00N/A
2023ND70ND
2024N/A00N/A

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppt

The EWG Health Guideline of 1 ppt for N-EtFOSAA was defined by EWG as based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water.

ppt = parts per trillion

All test results

Date Lab ID Result
2020-05-04CA2710019_008_008-202005041030ND
2020-05-07CA2710019_001_001-202005071005ND
2020-08-06CA2710019_003_003-202008061210ND
2023-05-22103699PND
2023-05-22103700PND
2023-11-07CA2710019_008_008-202311071403ND
2023-11-07CA2710019_003_003-202311071424ND
2023-11-21CA2710019_001_001-202311211309ND
2023-12-18110231PND
2023-12-18110232PND