| SFPUC City Distribution Division | 1.5 µg/L (on 9/19/2018) | CA |
|---|---|---|
| Des Moines Waterworks | .51 µg/L (on 5/26/2020) | IA |
| Naval Station Washington - Washington Navy Yard | .37 µg/L (on 2/26/2019) | DC |
| Urbandale Water Utility | .3 µg/L (on 11/13/2019) | IA |
| City of Loveland | .24 µg/L (on 11/14/2018) | CO |
| Johnston Municipal Water Supply | .19 µg/L (on 5/27/2020) | IA |
| Needham Water Dept. | .18 µg/L (on 1/27/2020) | MA |
| North City Water District | .15 µg/L (on 9/25/2019) | WA |
| UNH - Durham Water | .125 µg/L (on 1/22/2019) | NH |
| City of Pearl | .096 µg/L (on 2/11/2019) | MS |