Know Your Environment. Protect Your Health.

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

Ardmore Water System

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.

 

29

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND60ND
2021N/A00N/A
20220.480 ppt51ND - 2.40 ppt
2023ND120ND
2024ND60ND

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
2020-02-2820144380002_PFASND
2020-02-2820144380003_PFASND
2020-02-2820144380001_PFASND
2020-08-1320167216001_PFASND
2020-08-1320167216002_PFASND
2020-08-1320167216003_PFASND
2022-09-0235744081001_PFASND
2022-09-0235744081002_PFASND
2022-11-2835762245001_PFASND
2022-11-2835762245003_PFASND
2022-12-1335766151001_PFAS2.40 ppt
2023-02-2735782139001_PFASND
2023-02-2735782139003_PFASND
2023-02-2735782139005_PFASND
2023-05-0435797065001_PFASND
2023-05-0435797071001_PFASND
2023-05-0435797065003_PFASND
2023-08-1835821817001_PFASND
2023-08-1835821817003_PFASND
2023-08-1835821819001_PFASND
2023-10-2035836012004_PFASND
2023-10-2035836012005_PFASND
2023-11-0735839705001_PFASND
2024-03-05114098PND
2024-03-05114099PND
2024-03-05114100PND
2024-09-10120544PND
2024-09-10120545PND
2024-09-10120546PND