Storm Water Department

The City of Grimes Storm Water Department takes great pride in the quality of storm water management that is provided by the City. The City currently manages 266 miles of storm sewer in our system with 580 manholes. The Storm water Utility was created to ensure that appropriate resources are available to manage the storm water 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 storm water 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.

Storm Water Rates

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

Iowa Storm Water Education Partnership

City of Grimes is a member of the Iowa Storm Water Education Partnership. For more information on storm water management practices, please visit their website.

Storm Water Telephone Hotline

For emergencies please call the 24/7 hotline at 515-985-0667.

Storm Water Grant Program

The City of Grimes may help you pay for your yard project! Introducing the Storm Water Grant Program, which reimburses residents for soil quality restoration projects (SQR) and rain barrels. The City will reimburse 50% (up to $1500) per property for soil quality restoration projects and $75 per rain barrel per property.

Funding for this program is limited and is awarded on a first-come, first-served basis. Available grant funding renews each year. Grant applications will be accepted starting July 1, 2023. Learn more and apply here.