| David Scott | American Water Works Assn. | Opposing | GA83 |
| Mona Bond | City of Ankeny | Undecided | GA83 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA83 |
| Linda Kinman | Des Moines Water Works | Opposing | GA83 |
| John Gilliland | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Michael Ralston | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Nicole Crain | IA. Assn. of Business and Industry (ABI) | Undecided | GA83 |
| Don Brazelton | IA. Assn. of County Conservation Boards | Undecided | GA83 |
| Julie Smith | IA. Assn. of Municipal Utilities | Opposing | GA83 |
| Larry Pope | IA. Assn. of Municipal Utilities | Opposing | GA83 |
| Linda Kinman | IA. Assn. of Water Agencies | Opposing | GA83 |
| Lyle Krewson | IA. Chapter of Sierra Club | Undecided | GA83 |
| Sharon Tahtinen | IA. Dept. of Natural Resources | Supporting | GA83 |
| Alan Kemp | IA. League of Cities | Opposing | GA83 |
| Jessica Hyland | IA. League of Cities | Opposing | GA83 |
| Julie Smith | IA. League of Cities | Opposing | GA83 |
| Larry Pope | IA. League of Cities | Opposing | GA83 |
| Megan Peiffer | IA. League of Cities | Opposing | GA83 |
| Laverne Schroeder | IA. Nebraska Farm Equipment Dealers Assn. | Opposing | GA83 |
| Jerry Fitzgerald | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Maggie Smith-Fitzgerald | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Mark Joyce | IA. Pork Producers Assn. (IPP) | Undecided | GA83 |
| Emily Piper | IA. Rural Water Assn. | Opposing | GA83 |
| Brad Epperly | IA. Water Well Assn. | Undecided | GA83 |
| James West | IA. Water Well Assn. | Undecided | GA83 |
| Keith Luchtel | IA. Water Well Assn. | Undecided | GA83 |
| Paula Dierenfeld | IA. Water Well Assn. | Undecided | GA83 |
| Scott Sundstrom | IA. Water Well Assn. | Undecided | GA83 |
| Roy Overton | Izaak Walton League - Iowa Division | Undecided | GA83 |
| John Pederson | Missouri River Energy Services | Opposing | GA83 |
| Matt Eide | Missouri River Energy Services | Opposing | GA83 |
| Brian Johnson | NextEra Energy | Undecided | GA83 |
| Mike Heller | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA83 |
| Paula Feltner | Petroleum Marketers Management Insurance Company (PMMIC) | Undecided | GA83 |
| Amy Campbell | Professional Developers of IA (PDI) | Undecided | GA83 |
| Craig Patterson | Professional Developers of IA (PDI) | Undecided | GA83 |
| Emily Piper | Rathbun Regional Water Assn. | Opposing | GA83 |
| Susan Cameron Daemen | Storm Lake Citizens For Save the Lake | Undecided | GA83 |