| Andrew Minton | 3M Company | — | Sep-Dec21 |
| Evelyn Kennedy | 3M Company | — | Sep-Dec21 |
| Greg Bennett | 3M Company | — | Sep-Dec21 |
| Stephen Nielson | 3M Company | — | Sep-Dec21 |
| William L Byers, IV | 3M Company | — | Sep-Dec21 |
| Shawn Nelson | American Chemistry Council | — | Sep-Dec21 |
| Claire Bennett | Association of Ohio Drinking Water Agencies | — | Sep-Dec21 |
| David Rees Alexander | Association of Ohio Drinking Water Agencies | — | Sep-Dec21 |
| Nathanael Jonhenry | Association of Ohio Drinking Water Agencies | — | Sep-Dec21 |
| Claire Bennett | Association of Ohio Metropolitan Wastewater Agencies | — | Sep-Dec21 |
| David Rees Alexander | Association of Ohio Metropolitan Wastewater Agencies | — | Sep-Dec21 |
| Nathanael Jonhenry | Association of Ohio Metropolitan Wastewater Agencies | — | Sep-Dec21 |
| Timothy J Cosgrove | Association of Ohio Metropolitan Wastewater Agencies | — | Sep-Dec21 |
| Andrew W Herf | City of Toledo | — | Sep-Dec21 |
| Andrew Huffman | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Brooke A Cheney | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Kelsey Woolard | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Matthew S Whitehead | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Victor F Hipsley | Coalition of Ohio Regional Districts | — | Sep-Dec21 |
| Erik Mikkelson | Covestro LLC | — | Sep-Dec21 |
| Nathanael Jonhenry | Cuyahoga County Mayors and City Managers Association | — | Sep-Dec21 |
| Timothy J Cosgrove | Cuyahoga County Mayors and City Managers Association | — | Sep-Dec21 |
| Andrew Minton | Ductile Iron Pipe Research Association | — | Sep-Dec21 |
| Greg Bennett | Ductile Iron Pipe Research Association | — | Sep-Dec21 |
| William L Byers, IV | Ductile Iron Pipe Research Association | — | Sep-Dec21 |
| Aaron Crooks | Governor's Office | — | Sep-Dec22 |
| Bradley Bales | Governor's Office | — | Sep-Dec21 |
| Nathanael Jonhenry | Lake Erie Foundation | — | Sep-Dec21 |
| Timothy J Cosgrove | Lake Erie Foundation | — | Sep-Dec21 |
| Andrew Huffman | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Brooke A Cheney | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Kelsey Woolard | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Matthew S Whitehead | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Victor F Hipsley | Northeast Ohio Regional Sewer District | — | Sep-Dec21 |
| Julia Wynn | Ohio Association of Regional Councils | — | Sep-Dec21 |
| Kevin L Futryk | Ohio Association of Regional Councils | — | Sep-Dec21 |
| Andrew Swaim | Ohio Chemistry Technology Council | — | Sep-Dec21 |
| Jennifer Klein | Ohio Chemistry Technology Council | — | Sep-Dec21 |
| Shawn Nelson | Ohio Chemistry Technology Council | — | Sep-Dec21 |
| Gretchen Craycraft | Ohio Environmental Protection Agency | — | Sep-Dec21 |
| Jessica Langdon | Ohio Environmental Protection Agency | — | Sep-Dec21 |
| Laura H. Factor | Ohio Environmental Protection Agency | — | Sep-Dec21 |
| Laurie Stevenson | Ohio Environmental Protection Agency | — | Sep-Dec21 |
| Mark S. Johnson Jr. | Ohio Environmental Protection Agency | — | Sep-Dec22 |
| Christopher N Slagle | Ohio Manufacturers' Association | — | Sep-Dec21 |
| Andrew Huffman | Ohio Rural Water Association | — | Sep-Dec21 |
| Brooke A Cheney | Ohio Rural Water Association | — | Sep-Dec21 |
| Kelsey Woolard | Ohio Rural Water Association | — | Sep-Dec21 |
| Matthew S Whitehead | Ohio Rural Water Association | — | Sep-Dec21 |
| Victor F Hipsley | Ohio Rural Water Association | — | Sep-Dec21 |
| Adam Ward | The Ohio State University | — | Sep-Dec21 |
| Tim Brown | Toledo Metropolitan Council of Governments | — | Sep-Dec21 |