Know Your Environment. Protect Your Health.

4:2 Fluorotelomer Sulfonic Acid (4:2 FTSA)

Pratt, City of

4:2 Fluorotelomer Sulfonic Acid (4:2 FTSA) 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.

 

19

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
2023ND190ND

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 sulfonic acid (4:2 FTSA) 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
2023-03-06102088PND
2023-03-06102089PND
2023-03-06102090PND
2023-03-06102091PND
2023-03-06102092PND
2023-03-07102097PND
2023-03-07102096PND
2023-03-07102095PND
2023-03-07102094PND
2023-03-07102093PND
2023-09-18107741PND
2023-09-18107745PND
2023-09-18107744PND
2023-09-18107743PND
2023-09-18107742PND
2023-09-19107746PND
2023-09-19107747PND
2023-09-19107748PND
2023-09-19107750PND