| Case Number | Case Title | Open Date | Closed Date |
| 01-2466-WW-ACE | MOHAWK UTILITIES, INC | 09/20/2001 | 06/15/2004 |
| 72-0577-WW-ACE | CINNAMON LAKE UTILITY COMPANY | 07/14/1972 | 06/27/1974 |
| 72-0810-WW-ACE | NORTON UTILITIES INCORPORATED TED | 10/10/1972 | 01/20/1976 |
| 72-0871-WW-ACE | LAKE WAYNOKA UTILITIES INC ATED | 11/02/1972 | 07/07/1975 |
| 73-0176-WW-ACE | OHIO SUBURBAN WATER COMPANY | 03/12/1973 | 03/04/1976 |
| 73-0787-WW-ACE | SENECA HILLS SERVICE COMPANY | 11/02/1973 | 03/17/1976 |
| 73-0879-WW-ACE | MONTROSE WATERWORKS INCORPORATED | 12/17/1973 | 04/25/1975 |
| 73-8787-WW-ACE | SENECA HILLS SERVICE COMPANY | 11/02/1973 | 03/17/1976 |
| 74-0326-WW-ACE | MILLBROOK WATER COMPANY | 05/30/1974 | 01/22/1976 |
| 75-0199-WW-ACE | OHIO UTILITIES COMPANY | 03/25/1975 | 02/10/1976 |
| 75-0316-WW-ACE | ROLLING HILLS WATER CO INCORPORATED | 05/01/1975 | 12/07/1977 |
| 75-0509-WW-ACE | LAKE UTILITY COMPANY | 07/09/1975 | 06/28/1977 |
| 76-0641-WW-ACE | OHIO WATER SERVICE COMPANY | 08/13/1976 | 07/07/1977 |
| 77-0123-WW-ACE | APPLEGROVE WATER COMPANY | 01/18/1977 | 12/07/1977 |
| 77-1233-WW-ACE | IMPERIAL WATER COMPANY INCORPORATED | 09/27/1977 | 02/07/1979 |
| 78-0678-WW-ACE | PUBLIC UTILS SERVICE INCORPORATED | 03/31/1978 | 06/06/1979 |
| 79-0178-WW-ACE | INDIANBROOK WATER COMPANY | 03/01/1979 | 06/24/1980 |
| 81-0520-WW-ACE | LOUIS STILE DBA SANDLEWOOD WATER CO | 04/21/1981 | 10/13/1982 |
| 81-1071-WW-ACE | BRIMFIELD WATER COMPANY | 09/10/1981 | 02/10/1982 |
| 82-0219-WW-ACE | CHRISTI WATER SYSTEM INCORPORATED | 02/02/1982 | 06/19/1984 |
| 82-1390-WW-ACE | OHIO WATER SERVICE COMPANY | 11/10/1982 | 10/23/1984 |
| 86-2294-WW-ACE | OHIO WATER SERVICE COMPANY | 12/11/1986 | 10/14/1987 |
| 90-1647-WW-ACE | APPLEGROVE WATER COMPANY | 10/29/1990 | 12/07/1995 |
| 91-0922-WW-ACE | OHIO WATER SERVICE COMPANY | 05/20/1991 | 02/10/1993 |
| 91-1393-WW-ACE | FIRST BENEFITS AGENCY, INC. | 07/30/1991 | 07/20/1995 |
| 93-0190-WW-ACE | OHIO WATER SERVICE COMPANY | 02/02/1993 | 12/09/1993 |
| 95-0843-WW-ACE | SALT FORK UTILITY CO. | 09/14/1995 | 02/01/1996 |
| 95-0844-WW-ACE | SALT FORK UTILITY CO. | 09/14/1995 | 02/01/1996 |