| Case Number | Case Title | Open Date | Closed Date |
| 08-1125-WW-UNC | IN THE MATTER OF A SETTLEMENT AGREEMENT BETWEEN THE STAFF OF THE PUCO, OCC AND AQUA OHIO INC | 10/03/2008 | 04/24/2012 |
| 09-0644-WW-UNC | COPLEY SQUARE WATER COMPANY | 07/27/2009 | 09/18/2023 |
| 11-4673-WW-UNC | REQUEST BY STAFF TO REMOVE UTILITY OPERATORS CORP FROM THE RULES OF PUCO | 08/09/2011 | 08/25/2011 |
| 16-0182-WW-UNC | CHRISTI WATER SYSTEM INC | 01/25/2016 | 10/03/2023 |
| 16-1771-WW-UNC | CAMPLANDS WATER LLC | 08/22/2016 | 12/01/2017 |
| 18-1843-WW-UNC | AQUA OHIO INC | 12/20/2018 | 10/04/2023 |
| 19-1387-WW-UNC | AQUA OHIO INC | 06/26/2019 | 10/04/2023 |