| Case Number | Case Title | Open Date | Closed Date |
| 20-1585-ST-AIR | In the Matter of the Application of Carroll Township Treatment Services, Inc. for an Increase In Rates and Charges | 10/13/2020 | 10/04/2023 |
| 21-0596-ST-AIR | Aqua Ohio Wastewater, Inc. - Application to increase rates and charges for wastewater service | 05/21/2021 | 10/03/2023 |
| 80-0048-ST-AIR | PUBLIC SERVICE CORPORATION | 01/14/1980 | 05/19/1981 |