| David Scott | American Water Works Association | Opposing | GA87 |
| MIke Delaney | Citizens For A Healthy Iowa | Opposing | GA87 |
| Gary Grant | City of Cedar Rapids | Undecided | GA87 |
| Larry Murphy | City of Cedar Rapids | Undecided | GA87 |
| Meghan Malloy | City of Cedar Rapids | Undecided | GA87 |
| Doug Struyk | City of Des Moines | Supporting | GA87 |
| Jen Schulte | City of Des Moines | Supporting | GA87 |
| Jim Carney | City of Des Moines | Supporting | GA87 |
| Shannon Henson | City of Des Moines | Supporting | GA87 |
| Brice Oakley | City of West Des Moines | Undecided | GA87 |
| Don Avenson | City of West Des Moines | Undecided | GA87 |
| Tom Cope | City of West Des Moines | Undecided | GA87 |
| Connor Slack | Des Moines Water Works | Opposing | GA87 |
| Dane Schumann | Des Moines Water Works | Opposing | GA87 |
| Emily Hockins | Des Moines Water Works | Opposing | GA87 |
| John Lande | Des Moines Water Works | Opposing | GA87 |
| Laura Wasson | Des Moines Water Works | Opposing | GA87 |
| Richard Malm | Des Moines Water Works | Opposing | GA87 |
| Threase Harms | Des Moines Water Works | Opposing | GA87 |
| Josh Mandelbaum | Environmental Law and Policy Center | Opposing | GA87 |
| Steve Falck | Environmental Law and Policy Center | Opposing | GA87 |
| Kellie Paschke | Heartland Car Wash Association | Undecided | GA87 |
| Troy Skinner | Heartland Car Wash Association | Undecided | GA87 |
| Bob Ward | Iowa Annual Conference of United Methodist Church | Opposing | GA87 |
| Brian Carter | Iowa Annual Conference of United Methodist Church | Opposing | GA87 |
| Gary Nims | Iowa Annual Conference of United Methodist Church | Opposing | GA87 |
| Kathleen McQuillen | Iowa Annual Conference of United Methodist Church | Opposing | GA87 |
| Rita Carter | Iowa Annual Conference of United Methodist Church | Opposing | GA87 |
| Sheila Corsbie | Iowa Annual Conference of United Methodist Church | Opposing | GA87 |
| Walden Paige | Iowa Annual Conference of United Methodist Church | Opposing | GA87 |
| William Steward | Iowa Annual Conference of United Methodist Church | Opposing | GA87 |
| Julie Smith | Iowa Association of Municipal Utilities | Opposing | GA87 |
| Timothy Whipple | Iowa Association of Municipal Utilities | Undecided | GA87 |
| Linda Kinman | Iowa Association of Water Agencies | Undecided | GA87 |
| Linda Kinman | Iowa Association of Water Agencies | Opposing | GA87 |
| Eric Tabor | Iowa Attorney General Dept. of Justice | Undecided | GA87 |
| Jess Mazour | Iowa Citizens for Community Improvement Action Fund | Opposing | GA87 |
| Kerri Johannsen | Iowa Environmental Council | Opposing | GA87 |
| Ralph Rosenberg | Iowa Environmental Council | Opposing | GA87 |
| Alan Kemp | Iowa League of Cities | Undecided | GA87 |
| Lindsey McCune | Iowa League of Cities | Undecided | GA87 |
| Robert Palmer | Iowa League of Cities | Undecided | GA87 |
| Emily Piper | Iowa Rural Water Association | Undecided | GA87 |
| Carol Balvanz | Iowa Soybean Association | Undecided | GA87 |
| Jill Altringer | Iowa Soybean Association | Undecided | GA87 |
| William Heckroth | Iowa State Association of County Supervisors | Undecided | GA87 |
| Brad Epperly | Iowa Water Well Association | Undecided | GA87 |
| Dustin Miller | Iowa Water Well Association | Undecided | GA87 |
| Paige Thorson | Iowa Water Well Association | Undecided | GA87 |
| Paula Dierenfeld | Iowa Water Well Association | Undecided | GA87 |
| MIke Delaney | Izaak Walton League - Iowa Division | Opposing | GA87 |
| Gary Grant | Linn County Board of Supervisors | Undecided | GA87 |
| Larry Murphy | Linn County Board of Supervisors | Undecided | GA87 |
| Meghan Malloy | Linn County Board of Supervisors | Undecided | GA87 |
| Lyle Krewson | Lutheran Services in IA, Inc. | Undecided | GA87 |
| Brian Johnson | Polk County - Board of Supervisors | Undecided | GA87 |
| MIke Delaney | Raccoon River Watershed Association | Opposing | GA87 |
| Steven Schoenebaum | Smithfield Foods, Inc. | Undecided | GA87 |
| Gary Grant | Urban County Coalition | Undecided | GA87 |
| Larry Murphy | Urban County Coalition | Undecided | GA87 |
| Meghan Malloy | Urban County Coalition | Undecided | GA87 |
| Larry Blixt | Urbandale Water Utility | Opposing | GA87 |