| Ossining Water Department | .83 µg/L (on 10/26/2020) | NY |
|---|---|---|
| El Sauz WSC | .39 µg/L (on 6/22/2020) | TX |
| Taylorville | .371 µg/L (on 10/6/2020) | IL |
| City of Lafayette | .363 µg/L (on 8/7/2018) | CO |
| City of Wilsonville | .34 µg/L (on 5/16/2018) | OR |
| Madison Co. Utilities District | .33 µg/L (on 6/6/2018) | KY |
| Whatcom County Water District #2 | .32 µg/L (on 3/12/2018) | WA |