| Town of Godwin | 1.7 µg/L (on 2/24/2019) | NC |
|---|---|---|
| Walton Co. Water & Sewer Auth. | 1.5 µg/L (on 1/6/2021) | GA |
| Branson | 1.5 µg/L (on 3/18/2019) | MO |
| Village of Mineola | 1.5 µg/L (on 5/12/2020) | NY |
| Crown Point Waterworks | 1.4 µg/L (on 1/11/2021) | IN |
| Silver Springs Shores | 1.3 µg/L (on 9/18/2018) | FL |
| Iredell Water Corporation | 1.3 µg/L (on 3/17/2020) | NC |
| Seaside Park Water Dept. | 1.3 µg/L (on 3/9/2020) | NJ |
| Oak Lawn | 1.2 µg/L (on 4/7/2020) | IL |
| Slidell Water Supply | 1.2 µg/L (on 8/27/2018) | LA |