| Date Filed | Summary | Pages |
| 01/05/2007 | Effluent Hardness Avg-139 MG/L Report of December 2006 for Marion District, filed by Ohio American Water Company. | 2 |
| 12/08/2006 | Report filed by Ohio American Water Company (Marion District). | 2 |
| 09/14/2006 | Total hardness report for period of August 2006, filed by Ohio American Water Co., Franklin County Operations, Lake Darby Water Treatment Plant. | 2 |
| 07/31/2006 | Report for June 2006 on behalf of Ohio American Water Co., Lake Darby hardness results. | 2 |
| 06/15/2006 | Water hardness report for the Lake Darby Treatment Plant, (Marion District), filed on behalf of the Ohio American Water Co. | 2 |
| 04/10/2006 | Reporting period on behalf of Ohio American Water Co. Franklin County Operations Lake Darby Water Treatment Plant. | 2 |
| 03/03/2006 | February 2006 Lake Darby Water Treatment Plant report filed by Ohio American Water Co. | 2 |
| 02/10/2006 | Lake Darby Water Treatment Plant reporting period of January 2006 on behalf of Ohio American Water Co. Franklin County Operations. | 2 |
| 01/12/2006 | Hardness water report for the month of December, 2005 of Lake Darby Water Treatment Plan, filed by Ohio American Water Co. | 2 |
| 12/08/2005 | Lake Darby Water Treatment Plant reporting period of November 2005 on behalf of Ohio American Water Co. Franklin County Operations. | 2 |
| 11/07/2005 | Report for October 2005, effluent hardness avg-143 MG/L Marion District for Ohio American Water Company. | 1 |
| 11/07/2005 | Reporting period for October 2005, for Ohio American Water Co. Franklin County Operations Lake Darby Water Treatment Plant. | 1 |
| 10/12/2005 | Lake Darby Water Treatment Plant reporting period of September 2005 on behalf of Ohio American Water Co. Franklin County Operations. | 2 |
| 09/09/2005 | Report of the water treatment plant for Ohio American Water Co. for August 2005. | 2 |
| 08/10/2005 | Hard water report for Franklin County and Marion District filed on behalf of Ohio American Water Co. | 2 |