| Shawn Nelson | American Chemistry Council | — | Sep-Dec17 |
| Luther L Liggett, Jr. | American Concrete Pipe Association | — | Sep-Dec17 |
| Kevin L Futryk | American Council of Engineering Companies of Ohio | — | Sep-Dec17 |
| Christian B. Zeigler | American Petroleum Institute - API Ohio | — | Sep-Dec17 |
| Christina Polesovsky | American Petroleum Institute - API Ohio | — | Sep-Dec17 |
| Claire Linkhart | American Petroleum Institute - API Ohio | — | Sep-Dec17 |
| Denise M Larr | Aqua Ohio, Inc | — | Sep-Dec17 |
| William Fitzgibbon | Aqua Ohio, Inc | — | Sep-Dec17 |
| Madison Whalen | City of Akron, OH | — | Sep-Dec17 |
| Melissa R Hoeffel | City of Akron, OH | — | Sep-Dec17 |
| George T Glover | City of Cincinnati | — | Sep-Dec17 |
| James W. Ritter | City of Cincinnati | — | Sep-Dec17 |
| Nancy Cahall | City of Cincinnati | — | Sep-Dec17 |
| Andrew Huffman | Coalition of Ohio Regional Districts | — | Sep-Dec17 |
| Brooke A Cheney | Coalition of Ohio Regional Districts | — | Sep-Dec17 |
| Kelly C O'Reilly | Coalition of Ohio Regional Districts | — | Sep-Dec17 |
| Matthew S Whitehead | Coalition of Ohio Regional Districts | — | Sep-Dec17 |
| Victor F Hipsley | Coalition of Ohio Regional Districts | — | Sep-Dec17 |
| Bradford L Cole | County Commissioners' Association of Ohio | — | Sep-Dec17 |
| Cheryl L Subler | County Commissioners' Association of Ohio | — | Sep-Dec17 |
| Erica Vincent | Department of Commerce | — | Sep-Dec18 |
| Rachael Carl | Department of Commerce | — | Sep-Dec17 |
| Andrew Minton | Ductile Iron Pipe Research Association | — | Sep-Dec17 |
| Greg Bennett | Ductile Iron Pipe Research Association | — | Sep-Dec17 |
| Jason Mauk | Ductile Iron Pipe Research Association | — | Sep-Dec18 |
| William L Byers, IV | Ductile Iron Pipe Research Association | — | Sep-Dec17 |
| Courtney Saunders | Exxon Mobil Corporation | — | Sep-Dec17 |
| Daniel P Leite | Exxon Mobil Corporation | — | Sep-Dec17 |
| Kurt L Leib | Exxon Mobil Corporation | — | Sep-Dec17 |
| Robert N Eshenbaugh, Jr | Exxon Mobil Corporation | — | Sep-Dec17 |
| Belinda M Jones | Franklin Soil and Water Conservation District | — | Sep-Dec17 |
| Beth Hansen | Governor's Office | — | Sep-Dec17 |
| Dawn Larzelere | Governor's Office | — | Sep-Dec17 |
| Sarah Huffman | Governor's Office | — | Sep-Dec17 |
| Tim Biggam | Governor's Office | — | Sep-Dec17 |
| Wayne Struble | Governor's Office | — | Sep-Dec17 |
| Anne Sesler | Hamilton County Administration | — | Sep-Dec17 |
| Charles H Gerhardt, III | Hamilton County Administration | — | Sep-Dec17 |
| James T Benedict | Hamilton County Administration | — | Sep-Dec17 |
| James M Suver | Inter-University Council of Ohio (IUC) | — | Sep-Dec17 |
| Brady Oxender | Kent State University | — | Sep-Dec17 |
| Nick Gattozzi | Kent State University | — | Sep-Dec17 |
| Robert J Lapp | Manufacturing Policy Alliance | — | Sep-Dec17 |
| Denise M Larr | Metallus Inc | — | Sep-Dec17 |
| William Fitzgibbon | Metallus Inc | — | Sep-Dec17 |
| Denise M Larr | National Association of Water Companies, Ohio Chapter | — | Sep-Dec17 |
| William Fitzgibbon | National Association of Water Companies, Ohio Chapter | — | Sep-Dec17 |
| Andrew Huffman | Northeast Ohio Regional Sewer District | — | Sep-Dec18 |
| Brooke A Cheney | Northeast Ohio Regional Sewer District | — | Sep-Dec18 |
| Darnella Robertson | Northeast Ohio Regional Sewer District | — | Sep-Dec17 |
| Karen A Cincione | Northeast Ohio Regional Sewer District | — | Sep-Dec17 |
| Kelly C O'Reilly | Northeast Ohio Regional Sewer District | — | Sep-Dec18 |
| Matthew S Whitehead | Northeast Ohio Regional Sewer District | — | Sep-Dec18 |
| Thomas Niehaus | Northeast Ohio Regional Sewer District | — | Sep-Dec17 |
| Victor F Hipsley | Northeast Ohio Regional Sewer District | — | Sep-Dec18 |
| Denise M Larr | Nucor Steel Marion, Inc | — | Sep-Dec17 |
| William Fitzgibbon | Nucor Steel Marion, Inc | — | Sep-Dec17 |
| Kevin L Futryk | Ohio Association of Regional Councils | — | Sep-Dec17 |
| Zachary Frymier | Ohio Chamber of Commerce | — | Sep-Dec17 |
| Bryan Bennett | Ohio Chemistry Technology Council | — | Sep-Dec17 |
| Jennifer Klein | Ohio Chemistry Technology Council | — | Sep-Dec17 |
| Kevin R Schmidt | Ohio Chemistry Technology Council | — | Sep-Dec17 |
| Shawn Nelson | Ohio Chemistry Technology Council | — | Sep-Dec18 |
| Meghan Wadsworth | Ohio Department of Transportation | — | Sep-Dec17 |
| Patrick Smith | Ohio Department of Transportation | — | Sep-Dec17 |
| Danielle Giannantonio | Ohio Environmental Protection Agency | — | Sep-Dec17 |
| Laura H. Factor | Ohio Environmental Protection Agency | — | Sep-Dec17 |
| Kristen Sours | Ohio Home Builders Association, Inc | — | Sep-Dec17 |
| Vincent J Squillace | Ohio Home Builders Association, Inc | — | Sep-Dec17 |
| Andrew Huffman | Ohio Rural Water Association | — | Sep-Dec17 |
| Brooke A Cheney | Ohio Rural Water Association | — | Sep-Dec17 |
| Kelly C O'Reilly | Ohio Rural Water Association | — | Sep-Dec17 |
| Matthew S Whitehead | Ohio Rural Water Association | — | Sep-Dec17 |
| Victor F Hipsley | Ohio Rural Water Association | — | Sep-Dec17 |
| Holly Flanigan | Ohio Society of Professional Engineers | — | Sep-Dec17 |
| Denise M Larr | Ohio Steel Council | — | Sep-Dec17 |
| Belinda M Jones | Signet Jewelers Ltd. | — | Sep-Dec17 |
| Belinda M Jones | Solid Waste Authority of Central Ohio | — | Sep-Dec17 |
| Dan Jones | Solid Waste Authority of Central Ohio | — | Sep-Dec17 |
| Denise M Larr | Timken Company | — | Sep-Dec17 |
| William Fitzgibbon | Timken Company | — | Sep-Dec17 |