| Associated Builders and Contractors of Ohio | — | Jan-Apr19 |
| Bryan Williams | Associated Builders and Contractors of Ohio | — | Jan-Apr19 |
| Association of Ohio Metropolitan Wastewater Agencies | — | Jan-Apr19 |
| Nathanael Jonhenry | Association of Ohio Metropolitan Wastewater Agencies | — | Jan-Apr19 |
| Attorney General's Office | — | May-Aug20 |
| Coalition of Ohio Regional Districts | — | Jan-Apr19 |
| Andrew Huffman | Coalition of Ohio Regional Districts | — | Jan-Apr19 |
| Brooke A Cheney | Coalition of Ohio Regional Districts | — | Jan-Apr19 |
| Kelly C O'Reilly | Coalition of Ohio Regional Districts | — | Jan-Apr19 |
| Matthew S Whitehead | Coalition of Ohio Regional Districts | — | Jan-Apr19 |
| Victor F Hipsley | Coalition of Ohio Regional Districts | — | Jan-Apr19 |
| County Commissioners' Association of Ohio | — | Jan-Apr19 |
| Cheryl L Subler | County Commissioners' Association of Ohio | — | Jan-Apr19 |
| County Engineers Association of Ohio | — | Sep-Dec19 |
| Dean Ringle | County Engineers Association of Ohio | — | Sep-Dec19 |
| Michael T Evans | County Engineers Association of Ohio | — | Sep-Dec19 |
| Northeast Ohio Regional Sewer District | — | Jan-Apr19 |
| Andrew Huffman | Northeast Ohio Regional Sewer District | — | Jan-Apr19 |
| Brooke A Cheney | Northeast Ohio Regional Sewer District | — | Jan-Apr19 |
| Kelly C O'Reilly | Northeast Ohio Regional Sewer District | — | Jan-Apr19 |
| Matthew S Whitehead | Northeast Ohio Regional Sewer District | — | Jan-Apr19 |
| Victor F Hipsley | Northeast Ohio Regional Sewer District | — | Jan-Apr19 |
| Northwest Ohio Regional Economic Development Association | — | Jan-Apr19 |
| Brock Miskimen | Northwest Ohio Regional Economic Development Association | — | Jan-Apr19 |
| Christopher N Slagle | Northwest Ohio Regional Economic Development Association | — | Jan-Apr19 |
| Gregory J Lestini | Northwest Ohio Regional Economic Development Association | — | Jan-Apr19 |
| Matt Koppitch | Northwest Ohio Regional Economic Development Association | — | Jan-Apr19 |
| Ohio Association of Professional Fire Fighters | — | Jan-Apr19 |
| James P Carney | Ohio Association of Professional Fire Fighters | — | Jan-Apr19 |
| Michael Taylor | Ohio Association of Professional Fire Fighters | — | Jan-Apr19 |
| Thomas A Rave | Ohio Association of Professional Fire Fighters | — | Jan-Apr19 |
| Ohio Economic Development Association | — | Jan-Apr19 |
| Brock Miskimen | Ohio Economic Development Association | — | May-Aug19 |
| Christopher N Slagle | Ohio Economic Development Association | — | Jan-Apr19 |
| Gregory J Lestini | Ohio Economic Development Association | — | Jan-Apr19 |
| Jennifer Price | Ohio Economic Development Association | — | May-Aug19 |
| Matt Koppitch | Ohio Economic Development Association | — | Jan-Apr19 |
| Ohio Environmental Protection Agency | — | Jan-Apr19 |
| Gretchen Craycraft | Ohio Environmental Protection Agency | — | Jan-Apr19 |
| Laurie Stevenson | Ohio Environmental Protection Agency | — | Jan-Apr19 |
| Michael Guastella | Ohio Environmental Protection Agency | — | Jan-Apr19 |
| Ohio Municipal League | — | Jan-Apr19 |
| Edward L Albright | Ohio Municipal League | — | Jan-Apr19 |
| Ohio Rural Development Alliance | — | Jan-Apr19 |
| Brock Miskimen | Ohio Rural Development Alliance | — | Jan-Apr19 |
| Christopher N Slagle | Ohio Rural Development Alliance | — | Jan-Apr19 |
| Gregory J Lestini | Ohio Rural Development Alliance | — | Jan-Apr19 |
| Matt Koppitch | Ohio Rural Development Alliance | — | Jan-Apr19 |
| Rachael Guastella | Ohio Rural Development Alliance | — | Sep-Dec19 |
| Ohio Rural Water Association | — | Jan-Apr19 |
| Andrew Huffman | Ohio Rural Water Association | — | Jan-Apr19 |
| Brooke A Cheney | Ohio Rural Water Association | — | Jan-Apr19 |
| Kelly C O'Reilly | Ohio Rural Water Association | — | Jan-Apr19 |
| Matthew S Whitehead | Ohio Rural Water Association | — | Jan-Apr19 |
| Victor F Hipsley | Ohio Rural Water Association | — | Jan-Apr19 |
| Wright State University | — | May-Aug20 |