The following cities and universities in Iowa are required to obtain stormwater permits for their MS4s (Municipal Separate Storm Sewer Systems)
| Cities A-C | Cities D-I | Cities J-R | Cities S-W |
|---|---|---|---|
| Altoona | Davenport | Johnston | Sergeant Bluff |
| Ames | Des Moines | Le Claire | Sioux City |
| Ankeny | Dubuque | Marion | Storm Lake |
| Bettendorf | Eldridge | Marshalltown | University Heights |
| Bondurant | Elk Run Heights | North Liberty | University of Iowa |
| Buffalo | Ely | Norwalk | University of Northern Iowa |
| Carter Lake | Evansdale | Ottumwa | Urbandale |
| Cedar Falls | Grimes | Pleasant Hill | Waterloo |
| Cedar Rapids | Hiawatha | Raymond | Waukee |
| Clive | Hudson | Riverdale | West Des Moines |
| Coralville | Iowa City | Robins | Windsor Heights |
| Council Bluffs | Iowa State University |
Map: Cities & Universities Required to Obtain Stormwater Permits for MS4s
