9-chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
EWG Health Guideline
1 ppb
National Average
0.001 ppb
Detected In
9 utilities
Health Risks
The EWG Health Guideline of 1 ppt for 9Cl-PF3ONS was defined by EWG as 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.
Filtration Methods
Activated Carbon
yes
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
yes
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
yes
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
yes
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
yes
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
yes
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
yes
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
yes
Reverse Osmosis
yes
Ion Exchange
no
Activated Carbon
yes
Reverse Osmosis
yes
Ion Exchange
no
Utilities That Detected This Contaminant
| Utility Name | State | Level Detected | Status | |
|---|---|---|---|---|
| Lincoln, City of | AL | 11.7 ppt | Exceeds Guideline | View |
| Ponca City Mun Water | OK | 1.13 ppt | Detected | View |
| Salem Water System | LA | 0.925 ppt | Detected | View |
| Ariton Water Works | AL | 0.667 ppt | Detected | View |
| Satsuma Water Works | AL | 0.358 ppt | Detected | View |
| Grove Hill Water Works | AL | 0.108 ppt | Detected | View |
| Ardmore Water System | AL | 0.093 ppt | Detected | View |
| Greater Plattsburgh Water District | NY | 0.085 ppt | Detected | View |
| Westborough Water Department | MA | 0.018 ppt | Detected | View |