Stormwater Department

The City of Grimes Stormwater Department takes great pride in the quality of stormwater management that is provided by the City. The City currently manages 180 miles of storm sewer in our system with 580 manholes. The Stormwater Utility was created to ensure that appropriate resources are available to manage the stormwater within Grimes and to provide a stable funding source to maintain compliance with the MS4 permit required by the Iowa Department of Natural Resources (DNR).

The Clean Water Act, enforced by the U.S. Environmental Protection Agency’s (EPA) National Pollutant Discharge Elimination System (NPDES) permit program, was designed to control water pollution throughout the U.S. by regulating point and non-point sources of pollution to our country’s waterways. The Iowa DNR is tasked on the state level to enforce the U.S. EPA NPDES stormwater regulations through a permitting process. Under the program, the City of Grimes is required to hold and maintain a Municipal Separate Storm Sewer System (MS4) NPDES Phase II Permit.

Stormwater Rates

For more information on stormwater utility rates, please visit the Utilities page.

Iowa Stormwater

City of Grimes is a member of the Iowa Stormwater Education Partnership. For more information on stormwater management practices, please visit their website.