Know Your Environment. Protect Your Health.

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

San Gabriel Valley Water Company-Montebello

NOTE: San Gabriel Valley Water Company-Montebello purchases water from San Gabriel Valley Water Company- El Monte which is required to test for 4:2 fluorotelomer sulfonic acid (4:2 ftsa). Sample information shown below was taken by San Gabriel Valley Water Company- El Monte.

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.

 

39

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
2023ND390ND
2024ND20ND

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

NOTE: San Gabriel Valley Water Company-Montebello purchases water from San Gabriel Valley Water Company- El Monte which is required to test for 4:2 fluorotelomer sulfonic acid (4:2 ftsa). Sample information shown below was taken by San Gabriel Valley Water Company- El Monte.

Date Lab ID Result
2023-02-22CA1910039_155_155-202302221035ND
2023-02-22CA1910039_097_097-202302220815ND
2023-02-23CA1910039_109_109-202302230820ND
2023-02-23CA1910039_052_052-202302231110ND
2023-02-23CA1910039_053_053-202302230950ND
2023-02-23CA1910039_064_064-202302230835ND
2023-02-23CA1910039_054_054-202302231145ND
2023-05-24CA1910039_097_097-202305240823ND
2023-05-24CA1910039_155_155-202305240905ND
2023-05-25CA1910039_053_053-202305251300ND
2023-05-25CA1910039_054_054-202305251403ND
2023-05-25CA1910039_052_052-202305251240ND
2023-05-25CA1910039_109_109-202305251020ND
2023-06-22CA1910039_001_001-202306221205ND
2023-08-02CA1910039_052_052-202308021040ND
2023-08-24CA1910039_001_001-202308241510ND
2023-08-24CA1910039_054_054-202308241005ND
2023-08-24CA1910039_053_053-202308241353ND
2023-08-24CA1910039_064_064-202308241219ND
2023-08-24CA1910039_052_052-202308241448ND
2023-08-31CA1910039_064_064-202308311050ND
2023-09-14CA1910039_054_054-202309140908ND
2023-09-28CA1910039_064_064-202309281202ND
2023-09-28CA1910039_118_118-202309281155ND
2023-10-10CA1910039_064_064-202310100905ND
2023-10-10CA1910039_118_118-202310100900ND
2023-11-07CA1910039_064_064-202311070944ND
2023-11-07CA1910039_118_118-202311070938ND
2023-11-15CA1910039_155_155-202311151131ND
2023-11-15CA1910039_116_116-202311151125ND
2023-11-16CA1910039_001_001-20231116NULND
2023-11-16CA1910039_001_001-202311161255ND
2023-11-16CA1910039_109_109-202311160819ND
2023-11-16CA1910039_054_054-202311161403ND
2023-11-16CA1910039_053_053-202311161304ND
2023-11-16CA1910039_064_064-202311160928ND
2023-11-16CA1910039_052_052-202311161220ND
2023-12-12CA1910039_118_118-202312120844ND
2023-12-12CA1910039_064_064-202312120850ND