Official State of Iowa Website Here is how you know

Cities and Universities in Iowa Required to Obtain Stormwater Permits
for their MS4s (Municipal Separate Storm Sewer Systems)

Altoona Ames Ankeny Asbury
Bettendorf Bondurant Buffalo Carter Lake
Cedar Falls Cedar Rapids Clive Coralville
Council Bluffs Davenport Des Moines Dubuque
Eldridge Elk Run Heights Ely Evansdale
Grimes Hiawatha Hudson Iowa City
Iowa State University Johnston Le Claire Marion
Marshalltown North Liberty Norwalk Ottumwa
Pleasant Hill Raymond Riverdale Robins
Sergeant Bluff Sioux City Storm Lake University Heights
University of Iowa University of Northern Iowa Urbandale Waterloo
Waukee West Des Moines Windsor Heights  

Download Map: Cities & Universities Required to Obtain Stormwater Permits for MS4s

MS 4 Map of Iowa