A bill for an act relating to storm water drainage system services by establishing a maximum rate increase charged by governmental entities and creating exemptions for service charges.

This bill caps annual increases for storm water drainage fees charged by Iowa counties and municipal districts. It limits rate hikes to the lower of 102% of the previous year's fees or the Midwest region's consumer price index (CPI) increase, excluding debt repayment increases before July 2025. Properties with at least 1.5 inches of standing water during a billing cycle or those with approved retention ponds meeting federal standards are exempt from fees. If fees exceed the cap, the governing body must seek voter approval at the next general election, with refunds issued if the vote fails. The bill directly affects homeowners and businesses connected to storm water systems who pay these service charges.