Know Your Environment. Protect Your Health.

4:2 Fluorotelomer sulfonate (4:2 FTS)

Whitworth Water District 2

4:2 Fluorotelomer sulfonate (4:2 FTS) is a member of a class of chemicals called per- and polyfluoroalkyl substances or PFAS. These chemicals were used in the production of non-stick, stain repellent and chemically inert coatings. Click here to read more about perfluorinated chemicals.

 

13

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
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023ND130ND

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 4:2 fluorotelomer sulfonate (4:2 FTS) was defined by EWG 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
2023-10-164538490ND
2023-10-164538492ND
2023-10-164538491ND
2023-10-174540082ND
2023-10-174540099ND
2023-10-174540090ND
2023-10-184540071ND
2023-10-184540076ND
2023-10-234539354ND
2023-10-234539355ND
2023-10-234539605ND
2023-10-244538611ND
2023-10-244538610ND