| American Municipal Power | — | Jan-Apr19 |
| Brian Hickman | American Municipal Power | — | May-Aug20 |
| Charles Willoughby | American Municipal Power | — | Jan-Apr19 |
| Jolene M Thompson | American Municipal Power | — | Jan-Apr19 |
| Michael A Beirne | American Municipal Power | — | Jan-Apr19 |
| Aqua Ohio, Inc | — | Jan-Apr19 |
| Denise M Larr | Aqua Ohio, Inc | — | Jan-Apr19 |
| William Fitzgibbon | Aqua Ohio, Inc | — | Jan-Apr19 |
| Association of Ohio Metropolitan Wastewater Agencies | — | Jan-Apr19 |
| Andrew Etter | Association of Ohio Metropolitan Wastewater Agencies | — | Jan-Apr19 |
| Nathanael Jonhenry | Association of Ohio Metropolitan Wastewater Agencies | — | Jan-Apr19 |
| Timothy J Cosgrove | Association of Ohio Metropolitan Wastewater Agencies | — | Jan-Apr19 |
| Attorney General's Office | — | May-Aug20 |
| City of Akron, OH | — | Jan-Apr19 |
| Daniel G Hilson | City of Akron, OH | — | Jan-Apr20 |
| Madison Whalen | City of Akron, OH | — | Jan-Apr19 |
| Melissa R Hoeffel | City of Akron, OH | — | Jan-Apr19 |
| City of Cincinnati | — | Jan-Apr19 |
| Daniel G Hilson | City of Cincinnati | — | Jan-Apr20 |
| Katie McKinley | City of Cincinnati | — | Sep-Dec20 |
| Madison Whalen | City of Cincinnati | — | Jan-Apr19 |
| Melissa R Hoeffel | City of Cincinnati | — | Jan-Apr19 |
| Sherri Warner | City of Cincinnati | — | May-Aug20 |
| Thomas Book | City of Cincinnati | — | Jan-Apr20 |
| City of Cleveland | — | May-Aug19 |
| Valarie McCall | City of Cleveland | — | May-Aug19 |
| City of Columbus | — | Jan-Apr19 |
| Andrew Minton | City of Columbus | — | Jan-Apr19 |
| Evelyn Kennedy | City of Columbus | — | Sep-Dec19 |
| Greg Bennett | City of Columbus | — | May-Aug19 |
| Stephen Nielson | City of Columbus | — | Sep-Dec19 |
| Stephen Sayre | City of Columbus | — | Jan-Apr19 |
| William L Byers, IV | City of Columbus | — | Jan-Apr19 |
| City of Dayton | — | Jan-Apr20 |
| Kevin DeWine | City of Dayton | — | Jan-Apr19 |
| City of Dublin | — | Jan-Apr19 |
| Abraham Jacob | City of Dublin | — | Jan-Apr19 |
| Matthew G Kallner | City of Dublin | — | Jan-Apr19 |
| City of Elyria | — | May-Aug20 |
| Shannon Strachan | City of Elyria | — | May-Aug20 |
| City of Fairlawn | — | May-Aug20 |
| Thomas Book | City of Fairlawn | — | Jan-Apr20 |
| City of Grove City | — | Jan-Apr19 |
| Deborah Hackathorn | City of Grove City | — | Jan-Apr19 |
| Joseph Ewig | City of Grove City | — | Jan-Apr19 |
| City of New Albany | — | May-Aug19 |
| Dwayne Siekman | City of New Albany | — | May-Aug19 |
| Pamela Siekman | City of New Albany | — | May-Aug19 |
| City of Toledo | — | May-Aug19 |
| Andrew W Herf | City of Toledo | — | May-Aug19 |
| City of Upper Arlington | — | Jan-Apr19 |
| Chad Hawley | City of Upper Arlington | — | Jan-Apr19 |
| Troy Judy | City of Upper Arlington | — | Sep-Dec19 |
| City of Youngstown, OH | — | May-Aug20 |
| Thomas Book | City of Youngstown, OH | — | Jan-Apr20 |
| Cleveland City Council | — | Jan-Apr19 |
| Chad Hawley | Cleveland City Council | — | Jan-Apr19 |
| Troy Judy | Cleveland City Council | — | Sep-Dec19 |
| 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 |
| Columbus Chamber of Commerce | — | Jan-Apr19 |
| Holly Gross | Columbus Chamber of Commerce | — | 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 |
| Cuyahoga County Mayors and City Managers Association | — | Jan-Apr19 |
| Nathanael Jonhenry | Cuyahoga County Mayors and City Managers Association | — | Jan-Apr19 |
| Timothy J Cosgrove | Cuyahoga County Mayors and City Managers Association | — | Jan-Apr19 |
| Delhi Township, Ohio | — | May-Aug19 |
| George T Glover | Delhi Township, Ohio | — | May-Aug19 |
| Department of Taxation | — | Jan-Apr19 |
| Ernest Massie | Department of Taxation | — | Jan-Apr19 |
| Gregory Siegfried | Department of Taxation | — | Jan-Apr19 |
| Ian Dollenmayer | Department of Taxation | — | Jan-Apr19 |
| Jeffrey McClain | Department of Taxation | — | Jan-Apr19 |
| Kenneth Frey | Department of Taxation | — | May-Aug19 |
| Matthew Chafin | Department of Taxation | — | Jan-Apr19 |
| Michael O'Leary | Department of Taxation | — | Jan-Apr19 |
| Sarah O'Leary | Department of Taxation | — | Jan-Apr19 |
| Timothy Lynch | Department of Taxation | — | Jan-Apr19 |
| Ductile Iron Pipe Research Association | — | Jan-Apr19 |
| Andrew Minton | Ductile Iron Pipe Research Association | — | Jan-Apr19 |
| Greg Bennett | Ductile Iron Pipe Research Association | — | Jan-Apr19 |
| William L Byers, IV | Ductile Iron Pipe Research Association | — | Jan-Apr19 |
| Bradley Bales | Governor's Office | — | Jan-Apr20 |
| Hamilton County Administration | — | Jan-Apr19 |
| Alana Tucker | Hamilton County Administration | — | Jan-Apr19 |
| Charles H Gerhardt, III | Hamilton County Administration | — | Jan-Apr19 |
| James T Benedict | Hamilton County Administration | — | Jan-Apr19 |
| Mid-Ohio Regional Planning Commission (MORPC) | — | Sep-Dec19 |
| Andy Shifflette | Mid-Ohio Regional Planning Commission (MORPC) | — | Sep-Dec19 |
| Joseph Garrity | Mid-Ohio Regional Planning Commission (MORPC) | — | Sep-Dec19 |
| Mike Culp | Mid-Ohio Regional Planning Commission (MORPC) | — | Jan-Apr20 |
| Thea Walsh | Mid-Ohio Regional Planning Commission (MORPC) | — | Sep-Dec19 |
| William Murdock | Mid-Ohio Regional Planning Commission (MORPC) | — | Sep-Dec19 |
| National Association of Water Companies, Ohio Chapter | — | Jan-Apr19 |
| Denise M Larr | National Association of Water Companies, Ohio Chapter | — | Jan-Apr19 |
| William Fitzgibbon | National Association of Water Companies, Ohio Chapter | — | Jan-Apr19 |
| 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 |
| 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 Association of Regional Councils | — | Jan-Apr19 |
| Julia Wynn | Ohio Association of Regional Councils | — | Jan-Apr19 |
| Kevin L Futryk | Ohio Association of Regional Councils | — | Jan-Apr19 |
| Ohio Environmental Protection Agency | — | Jan-Apr19 |
| Gretchen Craycraft | Ohio Environmental Protection Agency | — | Jan-Apr19 |
| Laura H. Factor | Ohio Environmental Protection Agency | — | Jan-Apr19 |
| Michael Guastella | Ohio Environmental Protection Agency | — | Jan-Apr19 |
| Ohio Home Builders Association, Inc | — | Jan-Apr19 |
| Kristen Sours | Ohio Home Builders Association, Inc | — | Jan-Apr19 |
| Ohio Mayors Alliance | — | Jan-Apr19 |
| Keary McCarthy | Ohio Mayors Alliance | — | Jan-Apr19 |
| Ohio Municipal Electric Association | — | Jan-Apr19 |
| Brian Hickman | Ohio Municipal Electric Association | — | May-Aug20 |
| Charles Willoughby | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Courtney Saunders | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Daniel P Leite | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Denise M Larr | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Jolene M Thompson | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Joseph Price | Ohio Municipal Electric Association | — | Sep-Dec20 |
| Kurt L Leib | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Lisa McAlister | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Michael A Beirne | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Robert N Eshenbaugh, Jr | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Scott Owens | Ohio Municipal Electric Association | — | Jan-Apr19 |
| William Fitzgibbon | Ohio Municipal Electric Association | — | Jan-Apr19 |
| Ohio Municipal League | — | Jan-Apr19 |
| Ashley Ringle | Ohio Municipal League | — | May-Aug19 |
| Brad Barger | Ohio Municipal League | — | May-Aug19 |
| Brian P Barger | Ohio Municipal League | — | May-Aug19 |
| Edward L Albright | Ohio Municipal League | — | Jan-Apr19 |
| Thomas Wetmore | Ohio Municipal League | — | Jan-Apr20 |
| 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 |
| Ohio Township Association | — | Jan-Apr19 |
| Andrew Huffman | Ohio Township Association | — | Jan-Apr19 |
| Brooke A Cheney | Ohio Township Association | — | Jan-Apr19 |
| Heidi M Fought | Ohio Township Association | — | Jan-Apr19 |
| Kelly C O'Reilly | Ohio Township Association | — | Jan-Apr19 |
| Marisa Myers | Ohio Township Association | — | Jan-Apr19 |
| Matthew DeTemple | Ohio Township Association | — | Jan-Apr19 |
| Matthew S Whitehead | Ohio Township Association | — | Jan-Apr19 |
| Victor F Hipsley | Ohio Township Association | — | Jan-Apr19 |
| Ohio Water Development Authority | — | Jan-Apr19 |
| Martha J Sweterlitsch | Ohio Water Development Authority | — | Jan-Apr19 |
| Rachel G Winder | Ohio Water Development Authority | — | Jan-Apr19 |
| Put-in-Bay Township & Put-in-Bay Village | — | May-Aug20 |
| Katie McKinley | Put-in-Bay Township & Put-in-Bay Village | — | May-Aug20 |
| Thomas Book | Put-in-Bay Township & Put-in-Bay Village | — | May-Aug20 |
| Summit County | — | May-Aug20 |
| Sherri Warner | Summit County | — | May-Aug20 |
| Thomas Book | Summit County | — | Jan-Apr20 |
| Sycamore Township Board of Trustees | — | May-Aug19 |
| George T Glover | Sycamore Township Board of Trustees | — | May-Aug19 |
| Toledo Metropolitan Council of Governments | — | May-Aug19 |
| Tim Brown | Toledo Metropolitan Council of Governments | — | May-Aug19 |