| American Municipal Power | — | Jan-Apr18 |
| Charles Willoughby | American Municipal Power | — | Jan-Apr18 |
| Jolene M Thompson | American Municipal Power | — | Jan-Apr18 |
| Michael A Beirne | American Municipal Power | — | Jan-Apr18 |
| Association of Ohio Metropolitan Wastewater Agencies | — | May-Aug18 |
| Andrew Etter | Association of Ohio Metropolitan Wastewater Agencies | — | May-Aug18 |
| Nathanael Jonhenry | Association of Ohio Metropolitan Wastewater Agencies | — | May-Aug18 |
| Timothy J Cosgrove | Association of Ohio Metropolitan Wastewater Agencies | — | May-Aug18 |
| Andrew Huffman | Automotive Service Association of Ohio, Inc | — | May-Aug18 |
| City of Akron, OH | — | May-Aug18 |
| Madison Whalen | City of Akron, OH | — | May-Aug18 |
| Melissa R Hoeffel | City of Akron, OH | — | May-Aug18 |
| City of Cincinnati | — | Jan-Apr18 |
| George T Glover | City of Cincinnati | — | Jan-Apr18 |
| James W. Ritter | City of Cincinnati | — | Jan-Apr18 |
| Madison Whalen | City of Cincinnati | — | May-Aug18 |
| Melissa R Hoeffel | City of Cincinnati | — | May-Aug18 |
| City of Columbus | — | May-Aug18 |
| Andrew Minton | City of Columbus | — | Sep-Dec18 |
| Stephen Sayre | City of Columbus | — | May-Aug18 |
| William L Byers, IV | City of Columbus | — | Sep-Dec18 |
| City of Dayton | — | Sep-Dec18 |
| City of Grove City | — | May-Aug18 |
| Deborah Hackathorn | City of Grove City | — | May-Aug18 |
| Joseph Ewig | City of Grove City | — | May-Aug18 |
| City of Upper Arlington | — | May-Aug18 |
| Chad Hawley | City of Upper Arlington | — | May-Aug18 |
| Coalition of Ohio Regional Districts | — | Jan-Apr18 |
| Andrew Huffman | Coalition of Ohio Regional Districts | — | Jan-Apr18 |
| Brooke A Cheney | Coalition of Ohio Regional Districts | — | Jan-Apr18 |
| Kelly C O'Reilly | Coalition of Ohio Regional Districts | — | Jan-Apr18 |
| Matthew S Whitehead | Coalition of Ohio Regional Districts | — | Jan-Apr18 |
| Victor F Hipsley | Coalition of Ohio Regional Districts | — | Jan-Apr18 |
| County Commissioners' Association of Ohio | — | Jan-Apr18 |
| Adam Schwiebert | County Commissioners' Association of Ohio | — | May-Aug18 |
| Cheryl L Subler | County Commissioners' Association of Ohio | — | Jan-Apr18 |
| Delhi Township, Ohio | — | Sep-Dec18 |
| George T Glover | Delhi Township, Ohio | — | Sep-Dec18 |
| Ductile Iron Pipe Research Association | — | Jan-Apr18 |
| Andrew Minton | Ductile Iron Pipe Research Association | — | Jan-Apr18 |
| Greg Bennett | Ductile Iron Pipe Research Association | — | Jan-Apr18 |
| Jason Mauk | Ductile Iron Pipe Research Association | — | Jan-Apr18 |
| William L Byers, IV | Ductile Iron Pipe Research Association | — | Jan-Apr18 |
| Belinda M Jones | Franklin Soil and Water Conservation District | — | Jan-Apr18 |
| Governor's Office | — | Jan-Apr18 |
| Beth Hansen | Governor's Office | — | Jan-Apr18 |
| Dawn Larzelere | Governor's Office | — | Jan-Apr18 |
| Michael Fraizer | Governor's Office | — | May-Aug18 |
| Sarah Huffman | Governor's Office | — | Jan-Apr18 |
| Tim Biggam | Governor's Office | — | Jan-Apr18 |
| Green Township, Ohio | — | Sep-Dec18 |
| George T Glover | Green Township, Ohio | — | Sep-Dec18 |
| Hamilton County Administration | — | May-Aug18 |
| Anne Sesler | Hamilton County Administration | — | May-Aug18 |
| Charles H Gerhardt, III | Hamilton County Administration | — | May-Aug18 |
| James T Benedict | Hamilton County Administration | — | May-Aug18 |
| Kurtz Brothers Central OH LLC | — | Jan-Apr18 |
| Belinda M Jones | Kurtz Brothers Central OH LLC | — | Jan-Apr18 |
| Dan Jones | Kurtz Brothers Central OH LLC | — | Jan-Apr18 |
| Andrew Minton | Nationwide Children's Hospital, Inc | — | Jan-Apr18 |
| Northeast Ohio Regional Sewer District | — | Jan-Apr18 |
| Andrew Huffman | Northeast Ohio Regional Sewer District | — | Jan-Apr18 |
| Brooke A Cheney | Northeast Ohio Regional Sewer District | — | Jan-Apr18 |
| Kelly C O'Reilly | Northeast Ohio Regional Sewer District | — | Jan-Apr18 |
| Matthew S Whitehead | Northeast Ohio Regional Sewer District | — | Jan-Apr18 |
| Victor F Hipsley | Northeast Ohio Regional Sewer District | — | Jan-Apr18 |
| Ohio Association of Regional Councils | — | Jan-Apr18 |
| Kevin L Futryk | Ohio Association of Regional Councils | — | Jan-Apr18 |
| Ohio Environmental Protection Agency | — | May-Aug18 |
| Craig Butler | Ohio Environmental Protection Agency | — | May-Aug18 |
| Laura H. Factor | Ohio Environmental Protection Agency | — | May-Aug18 |
| Michael Guastella | Ohio Environmental Protection Agency | — | May-Aug18 |
| Ohio Home Builders Association, Inc | — | Jan-Apr18 |
| Kristen Sours | Ohio Home Builders Association, Inc | — | Jan-Apr18 |
| Vincent J Squillace | Ohio Home Builders Association, Inc | — | Jan-Apr18 |
| Ohio Mayors Alliance | — | May-Aug18 |
| Keary McCarthy | Ohio Mayors Alliance | — | May-Aug18 |
| Ohio Municipal Electric Association | — | Jan-Apr18 |
| Charles Willoughby | Ohio Municipal Electric Association | — | Jan-Apr18 |
| Courtney Saunders | Ohio Municipal Electric Association | — | Jan-Apr18 |
| Daniel P Leite | Ohio Municipal Electric Association | — | Jan-Apr18 |
| Jolene M Thompson | Ohio Municipal Electric Association | — | Jan-Apr18 |
| Kurt L Leib | Ohio Municipal Electric Association | — | Jan-Apr18 |
| Lisa McAlister | Ohio Municipal Electric Association | — | Jan-Apr18 |
| Michael A Beirne | Ohio Municipal Electric Association | — | Jan-Apr18 |
| Robert N Eshenbaugh, Jr | Ohio Municipal Electric Association | — | Jan-Apr18 |
| Scott Owens | Ohio Municipal Electric Association | — | Jan-Apr18 |
| Ohio Municipal League | — | Jan-Apr18 |
| Brad Barger | Ohio Municipal League | — | May-Aug18 |
| Brian P Barger | Ohio Municipal League | — | May-Aug18 |
| Edward L Albright | Ohio Municipal League | — | Jan-Apr18 |
| Kent M Scarrett | Ohio Municipal League | — | Jan-Apr18 |
| Ohio Public Works Commission | — | Jan-Apr18 |
| Michael Miller | Ohio Public Works Commission | — | Jan-Apr18 |
| Ohio Rural Water Association | — | Jan-Apr18 |
| Andrew Huffman | Ohio Rural Water Association | — | Jan-Apr18 |
| Brooke A Cheney | Ohio Rural Water Association | — | Jan-Apr18 |
| Kelly C O'Reilly | Ohio Rural Water Association | — | Jan-Apr18 |
| Matthew S Whitehead | Ohio Rural Water Association | — | Jan-Apr18 |
| Victor F Hipsley | Ohio Rural Water Association | — | Jan-Apr18 |
| Ohio Township Association | — | Jan-Apr18 |
| Andrew Huffman | Ohio Township Association | — | Jan-Apr18 |
| Brooke A Cheney | Ohio Township Association | — | Jan-Apr18 |
| Heidi M Fought | Ohio Township Association | — | Jan-Apr18 |
| Kelly C O'Reilly | Ohio Township Association | — | Jan-Apr18 |
| Matthew DeTemple | Ohio Township Association | — | Jan-Apr18 |
| Matthew S Whitehead | Ohio Township Association | — | Jan-Apr18 |
| Victor F Hipsley | Ohio Township Association | — | Jan-Apr18 |
| Martha J Sweterlitsch | Ohio Water Development Authority | — | Jan-Apr18 |
| Rachel G Winder | Ohio Water Development Authority | — | Jan-Apr18 |
| Pharmaceutical Research and Manufacturers of America(PhRMA) | — | Sep-Dec18 |
| Sycamore Township Board of Trustees | — | Sep-Dec18 |
| George T Glover | Sycamore Township Board of Trustees | — | Sep-Dec18 |
| The Columbus Partnership | — | Jan-Apr18 |
| Jeff Polesovsky | The Columbus Partnership | — | Jan-Apr18 |
| William L Byers, IV | The Columbus Partnership | — | Jan-Apr18 |
| Nathan Aichele | Wholesale Beer and Wine Association of Ohio | — | Jan-Apr18 |