Iowa Stormwater-General: What you need to know

Soil Conservation Districts Law, Code of Iowa (IA Code) 161A.1 to 161A.80

National Pollutant Discharge Elimination System (NPDES) permit program: Iowa Administrative Code (IAC) 567-64.13(455B) to 567-64.16(455B)

General permits: IAC 567-64.15(455B)

Iowa Department of Natural Resources (DNR) Environmental Protection Division Water Quality Bureau Stormwater Program

U.S. Environmental Protection Agency (EPA) Region 7

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

• Rules. Iowa has been delegated authority by the U.S. Environmental Protection Agency (EPA) to administer the federal National Pollutant Discharge Elimination System (NPDES) permit program, including authorization to issue permits for stormwater discharges related to industrial facilities, construction activities, and municipal separate storm sewer systems (MS4s). See the national section STORMWATER—GENERAL for more information about federal permitting requirements for these facilities and activities and the state sections STORMWATER—INDUSTRIAL FACILITIES, STORMWATER—CONSTRUCTION ACTIVITIES, and STORMWATER—MUNICIPALITIES for information on the state requirements for these specific types of discharges.

The state has adopted the federal stormwater NPDES permitting requirements under 40 CFR 122.26 by reference.

• Administration and enforcement. The Stormwater Program under DNR's Water Quality Bureau administers the NPDES stormwater permitting requirements in Iowa.