Know Your Environment. Protect Your Health.

4:2 Fluorotelomer sulfonate (4:2 FTS)

Marysville Utilities

NOTE: Marysville Utilities purchases water from City of Everett Public Works Department which is required to test for 4:2 fluorotelomer sulfonate (4:2 fts). Sample information shown below was taken by City of Everett Public Works Department.

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.

 

8

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
2022ND70ND
2023ND80ND

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

NOTE: Marysville Utilities purchases water from City of Everett Public Works Department which is required to test for 4:2 fluorotelomer sulfonate (4:2 fts). Sample information shown below was taken by City of Everett Public Works Department.

Date Lab ID Result
2023-02-234569021ND
2023-02-234569020ND
2023-05-164569022ND
2023-05-164569019ND
2023-08-154569023ND
2023-08-154569017ND
2023-11-074569024ND
2023-11-074569018ND