| Paducah Waterworks | .067 µg/L (on 1/22/2018) | KY |
|---|---|---|
| City of Cleburne | .031 µg/L (on 1/29/2019) | TX |
| Parker WSD | .022 µg/L (on 4/16/2019) | CO |
| City of West Point | .022 µg/L (on 10/2/2018) | MS |
| Yorktown Consolidated Water Dist. #1 | .019 µg/L (on 6/13/2018) | NY |
| Rowan Water, Inc. | .0178 µg/L (on 11/7/2018) | KY |
| City of Sunnyvale | .016 µg/L (on 12/18/2018) | CA |
| Borden Tri-County Region | .016 µg/L (on 4/16/2019) | IN |
| Bellevue Waterworks | .016 µg/L (on 4/15/2020) | WI |
| Henry County Water & Sewer Authority | .015 µg/L (on 5/8/2019) | GA |