| Case Number | Case Title | Open Date | Closed Date |
| 86-0656-WS-AIR | LAKE ERIE UTILITIES COMPANY | 04/24/1986 | 12/23/1986 |
| 86-0799-WS-AEM | LAKE ERIE UTILITIES | 05/12/1986 | 08/26/1986 |
| 86-0829-WS-CSS | WINGS OF FAITH CH V OH SUB WATER CO | 05/16/1986 | 09/23/1986 |
| 86-0957-WS-AIR | COPLEY SQUARE WATER COMPANY | 06/09/1986 | 04/28/1987 |
| 86-1561-WS-COI | LAKE ERIE UTILITIES CO. | 08/05/1986 | 10/18/1988 |
| 86-2046-WS-COI | INVESTIGATION INTO WATER/WASTEWATER | 10/22/1986 | 11/02/1995 |
| 86-2047-WS-COI | WATER/SEWER - 4901:1-15-12 & 13 OAC | 10/22/1986 | 11/08/1988 |
| 86-2053-WS-UNC | OHIO SUBURBAN WATER COMPANY | 10/22/1986 | 11/12/1986 |
| 86-2301-WS-ARJ | FAIRFIELD UTILITY COMPANY | 12/11/1986 | 01/20/1987 |
| 86-2307-WS-ATA | OHIO SUBURBAN WATER COMPANY | 12/12/1986 | 11/10/1987 |