4:2 Fluorotelomer Sulfonic Acid (4:2 FTSA)
Status: No national drinking water standard exists
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.
2017-2019:
1
states detected
1
utilities detected
3,612
people served
0
states over health guideline
0
utilities over health guideline
0
people served over health guideline
Health concerns for 4:2 fluorotelomer sulfonic acid (4:2 FTSA)
Cancer
Harm to the immune system
Hormone disruption
Harm to fetal growth and child development
Harm to the liver
State and national drinking water standards and health guidelines
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. This health guideline protects against applies to the entire class of PFAS detected in water.
ppt = parts per trillion
States reporting 4:2 fluorotelomer sulfonic acid (4:2 FTSA) in drinking water
| UTILITIES WITH CONTAMINATION | |||
|---|---|---|---|
| State | Utilities | People Served | |
| New Hampshire | 1 | 3,612 | |
Filtering technologies that reduce 4:2 fluorotelomer sulfonic acid (4:2 FTSA)
Activated Carbon
Reverse Osmosis
Utilities with the highest amounts of 4:2 fluorotelomer sulfonic acid (4:2 FTSA), 2017-2019
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Jaffrey Water Works | Jaffrey, NH | 1 of 5 | 3.72 ppt | 3,612 |
| Utility | Location | Tests | Average level | People served |
|---|