Free Water Analysis

N-ethyl perfluorooctane sulfonamido acetic acid (N-EtFOSAA)

EWG Health Guideline
1 ppb
National Average
0.002 ppb
Detected In
50 utilities

Health Risks

The EWG Health Guideline of 1 ppt for N-EtFOSAA 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
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
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
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
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
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
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
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
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
Ion Exchange
no
Reverse Osmosis
yes

Utilities That Detected This Contaminant

Utility Name State Level Detected Status
Montevallo Water Works & Sewer AL 6.37 ppt Exceeds Guideline View
Wausau Waterworks WI 4.31 ppt Exceeds Guideline View
Satsuma Water Works AL 1.83 ppt Detected View
United Water Camden NJ 1.39 ppt Detected View
Ariton Water Works AL 1.18 ppt Detected View
Dade City Water Department FL 0.986 ppt Detected View
Rochester Water Department NH 0.713 ppt Detected View
Yankee Springs Meadows MI 0.7 ppt Detected View
North Brunswick W Department NJ 0.633 ppt Detected View
Mashpee Water District MA 0.401 ppt Detected View
City of Brighton CO 0.26 ppt Detected View
Concord Water Department NH 0.231 ppt Detected View
Munford Water Authority Inc. AL 0.21 ppt Detected View
Grove Hill Water Works AL 0.144 ppt Detected View
Dartmouth Water Division MA 0.126 ppt Detected View
New Bedford Department of Public Infrastructure MA 0.126 ppt Detected View
Brockton Water Commission MA 0.116 ppt Detected View
Milford Water Company MA 0.116 ppt Detected View
Whitman Water System MA 0.116 ppt Detected View
Bellflower - Somerset MWC CA 0.109 ppt Detected View
Abington/rockland Joint Water Works MA 0.107 ppt Detected View
Wilsonville Water Works AL 0.1 ppt Detected View
City of Loma Linda CA 0.1 ppt Detected View
Montebello Land & Water Company CA 0.095 ppt Detected View
Grafton Water District MA 0.09 ppt Detected View
Westborough Water Department MA 0.089 ppt Detected View
Seekonk Water District MA 0.085 ppt Detected View
Ardmore Water System AL 0.083 ppt Detected View
Billerica Water Works MA 0.078 ppt Detected View
East Bridgewater Water Department MA 0.064 ppt Detected View
Grand Haven MI 0.063 ppt Detected View
Norwalk Water Department CA 0.062 ppt Detected View
Pico WD CA 0.062 ppt Detected View
Dedham Westwood Water District MA 0.06 ppt Detected View
Haverhill Water Department MA 0.06 ppt Detected View
Springdale Farms (colonial) MA 0.059 ppt Detected View
Greenfield Water Department MA 0.054 ppt Detected View
Dighton Water District MA 0.052 ppt Detected View
Taunton Water Division MA 0.052 ppt Detected View
Danvers Water Department MA 0.051 ppt Detected View
Uxbridge DPW Water Division MA 0.05 ppt Detected View
Ipswich DPU Water Department MA 0.047 ppt Detected View
Middleborough Water Supply MA 0.043 ppt Detected View
Sudbury Water District MA 0.038 ppt Detected View
Shrewsbury Water Department MA 0.037 ppt Detected View
Brewster Water Department MA 0.034 ppt Detected View
Gloucester DPW Water Department MA 0.034 ppt Detected View
Northampton Water Department MA 0.034 ppt Detected View
Easton Water Div MA 0.033 ppt Detected View
Natick Water Department MA 0.033 ppt Detected View