Know Your Environment. Protect Your Health.

4:2 Fluorotelomer sulfonate (4:2 FTS)

City of Coeur D Alene

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.

 

17

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
2023ND170ND

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
2023-11-21PFASMDL004003ND
2023-11-21PFASMDL004011ND
2023-11-21PFASMDL004010ND
2023-11-21PFASMDL004009ND
2023-11-21PFASMDL004008ND
2023-11-21PFASMDL004007ND
2023-11-21PFASMDL004006ND
2023-11-21PFASMDL004005ND
2023-11-21PFASMDL004004ND
2023-11-21PFASMDL004002ND
2023-11-21PFASMDL004001ND
2023-12-20PFASMDL077801ND
2023-12-20PFASMDL077806ND
2023-12-20PFASMDL077805ND
2023-12-20PFASMDL077804ND
2023-12-20PFASMDL077803ND
2023-12-20PFASMDL077802ND