| Case Number | Case Title | Open Date | Closed Date |
| 07-1112-WS-AIR | OHIO AMERICAN WATER COMPANY | 10/12/2007 | 10/29/2015 |
| 08-0227-WS-AIR | WATER AND SEWER LLC | 03/06/2008 | 03/15/2011 |
| 09-0391-WS-AIR | OHIO AMERICAN WATER COMPANY | 05/07/2009 | 12/01/2017 |
| 11-4161-WS-AIR | OHIO AMERICAN WATER COMPANY | 07/01/2011 | 12/01/2017 |
| 18-1528-WS-AIR | Columbia MHC East LLC d/b/a Columbia Park Water and Sewer System | 10/09/2018 | 10/04/2023 |
| 22-0489-WS-AIR | Copley Business Center LLC | 05/09/2022 | 10/03/2023 |