| David Scott | American Water Works Association | Opposing | GA88 |
| Karla Fultz McHenry | Delta Dental of Iowa | Opposing | GA88 |
| Lynh Patterson | Delta Dental of Iowa | Opposing | GA88 |
| Dane Schumann | Des Moines University | Undecided | GA88 |
| Maddie Wilcox | Des Moines University | Undecided | GA88 |
| Threase Harms | Des Moines University | Undecided | GA88 |
| Dane Schumann | Des Moines Water Works | Opposing | GA88 |
| Maddie Wilcox | Des Moines Water Works | Opposing | GA88 |
| Threase Harms | Des Moines Water Works | Opposing | GA88 |
| Dane Schumann | EveryStep | Undecided | GA88 |
| Maddie Wilcox | EveryStep | Undecided | GA88 |
| Threase Harms | EveryStep | Undecided | GA88 |
| Brad Hartkopf | Iowa Association of Business and Industry (ABI) | Opposing | GA88 |
| Michael Ralston | Iowa Association of Business and Industry (ABI) | Opposing | GA88 |
| Nicole Crain | Iowa Association of Business and Industry (ABI) | Opposing | GA88 |
| Julie Smith | Iowa Association of Municipal Utilities | Opposing | GA88 |
| Timothy Whipple | Iowa Association of Municipal Utilities | Opposing | GA88 |
| Julie Smith | Iowa Association of Water Agencies | Opposing | GA88 |
| Julie Smith | Iowa Dental Association | Opposing | GA88 |
| Matt McKinney | Iowa Dental Association | Opposing | GA88 |
| RG Schwarm | Iowa Dental Association | Opposing | GA88 |
| Jill Stuecker | Iowa Dental Board | Opposing | GA88 |
| Jon Murphy | Iowa Dental Hygienists Association | Opposing | GA88 |
| Tom Cope | Iowa Dental Hygienists Association | Opposing | GA88 |
| Adam Schnieders | Iowa Dept. of Natural Resources | Undecided | GA88 |
| Jon Tack | Iowa Dept. of Natural Resources | Undecided | GA88 |
| Amy McCoy | Iowa Dept. of Public Health | Undecided | GA88 |
| Dane Schumann | Iowa Environmental Council | Opposing | GA88 |
| Maddie Wilcox | Iowa Environmental Council | Opposing | GA88 |
| Threase Harms | Iowa Environmental Council | Opposing | GA88 |
| Eric Bradley | Iowa Environmental Health Association | Opposing | GA88 |
| Alan Kemp | Iowa League of Cities | Undecided | GA88 |
| Daniel Stalder | Iowa League of Cities | Undecided | GA88 |
| Robert Palmer | Iowa League of Cities | Undecided | GA88 |
| Amy Campbell | Iowa Primary Care Association | Opposing | GA88 |
| Craig Patterson | Iowa Primary Care Association | Opposing | GA88 |
| Jeneane Moody | Iowa Public Health Association | Opposing | GA88 |
| Emily Piper | Iowa Rural Water Association | Opposing | GA88 |
| Jamie Cashman | Iowa State Association of Counties | Opposing | GA88 |
| Kristi Harshbarger | Iowa State Association of Counties | Opposing | GA88 |
| Lucas Beenken | Iowa State Association of Counties | Opposing | GA88 |
| William Peterson | Iowa State Association of Counties | Opposing | GA88 |
| Doug Struyk | Iowa State Bar Association | Undecided | GA88 |
| Jennifer Dorman | Iowa State Bar Association | Undecided | GA88 |
| Jim Carney | Iowa State Bar Association | Undecided | GA88 |
| Emily Piper | Rathbun Regional Water Association | Opposing | GA88 |
| Cyndi Pederson | United Way of Central Iowa | Opposing | GA88 |
| Dave Stone | United Way of Central Iowa | Opposing | GA88 |
| John Pederson | United Way of Central Iowa | Opposing | GA88 |
| Jake Ketzner | Urbandale Water Utility | Opposing | GA88 |
| Larry Blixt | Urbandale Water Utility | Opposing | GA88 |