| Jim Obradovich | Association of Regional Water Organizations | Opposing | GA89 |
| Robert Mulqueen | Association of Regional Water Organizations | Opposing | GA89 |
| MaryNelle Trefz | Common Good Iowa | Opposing | GA89 |
| Mike Owen | Common Good Iowa | Opposing | GA89 |
| Sheila Hansen | Common Good Iowa | Opposing | GA89 |
| Nick Laning | Des Moines Water Works | Opposing | GA89 |
| Nick Laning | Des Moines Water Works | Undecided | GA89 |
| Threase Harms | Des Moines Water Works | Opposing | GA89 |
| Threase Harms | Des Moines Water Works | Undecided | GA89 |
| Michael Triplett | Greater Iowa Apartment Association | Supporting | GA89 |
| Hannah McDowell | Grow Clinton County | Undecided | GA89 |
| Nick Laning | Grow Clinton County | Undecided | GA89 |
| Threase Harms | Grow Clinton County | Undecided | GA89 |
| Bob Rafferty | Iowa American Water Co. | Undecided | GA89 |
| Nick Laning | Iowa American Water Co. | Undecided | GA89 |
| Rachel Ong | Iowa American Water Co. | Undecided | GA89 |
| Andrew Lietzow | Iowa Apartment Association (dba IaRPOA) | Supporting | GA89 |
| Brad Epperly | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Dustin Miller | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Kevin Condon | Iowa Association of Electric Cooperatives | Undecided | GA89 |
| Alex Cutchey | Iowa Association of Municipal Utilities | Opposing | GA89 |
| Brad Epperly | Iowa Association of Municipal Utilities | Opposing | GA89 |
| Dustin Miller | Iowa Association of Municipal Utilities | Opposing | GA89 |
| Jennifer Kingland | Iowa Association of Realtors | Undecided | GA89 |
| Julie Smith | Iowa Association of Water Agencies | Opposing | GA89 |
| Kate Walton | Iowa Community Action Association | Opposing | GA89 |
| Matt Eide | Iowa Community Action Association | Opposing | GA89 |
| Jordan Oster | Iowa Environmental Council | Opposing | GA89 |
| Kerri Johannsen | Iowa Environmental Council | Opposing | GA89 |
| Michael Schmidt | Iowa Environmental Council | Opposing | GA89 |
| Andrew Lietzow | Iowa Landlord Association | Supporting | GA89 |
| Tim Coonan | Iowa Manufactured Housing Association | Undecided | GA89 |
| Emily Piper | Iowa Rural Water Association | Opposing | GA89 |
| Kate Walton | Missouri River Energy Services | Undecided | GA89 |
| Kersten Johnson | Missouri River Energy Services | Undecided | GA89 |
| Matt Eide | Missouri River Energy Services | Undecided | GA89 |
| Betty Andrews | NAACP, National Association for the Advancement of Colored People, Iowa-Nebraska | Opposing | GA89 |
| David Walker | NAACP, National Association for the Advancement of Colored People, Iowa-Nebraska | Opposing | GA89 |
| Russell Lovell | NAACP, National Association for the Advancement of Colored People, Iowa-Nebraska | Opposing | GA89 |