| Naval Station Washington - Washington Navy Yard | .36 µg/L (on 2/26/2019) | DC |
|---|---|---|
| Conway Co. Regional Water District | .17 µg/L (on 1/6/2020) | AR |
| Ambler Boro Water Dept. | .15 µg/L (on 1/7/2020) | PA |
| City of Pearl | .13 µg/L (on 2/11/2019) | MS |
| Geneva | .059 µg/L (on 9/18/2018) | IL |
| Suburban Waters - San Jose | .053 µg/L (on 11/15/2019) | CA |
| Fair Oaks Water District | .044 µg/L (on 12/27/2018) | CA |
| Kalaheo-Koloa | .03 µg/L (on 3/5/2019) | HI |