Iowa NPDES regulations & environmental compliance analysis

Iowa NPDES: What you need to know

Governing Law and Regulations

National Pollutant Discharge Elimination System (NPDES) permits: Iowa Administrative Code (IAC) 567-64.1(455B) to 64.18(455B)

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NPDES individual permits: IAC 567-64.3(455B)

NPDES general permits: IAC 567-64.15(455B)

Title transfers: IAC 567-64.14(455B)

Fees: IAC 567-64.16(455B)

Construction permits: IAC 567-64.2(455B)

Sewage sludge: IAC 567-67.1(455B)

Sewage sludge exclusions: IAC 567-67.2(455B)

Regulatory Agencies

Iowa Department of Natural Resources (DNR) Environmental Services Division Water Quality Bureau NPDES Permits Section


Environmental Services Division Water Quality Bureau Wastewater Construction Section

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.

Comparison: State vs. Federal

Rules. Iowa is fully authorized by the U.S. Environmental Protection Agency (EPA) to administer the National Pollutant Discharge Elimination System (NPDES) permit program for wastewater discharges. The state NPDES program generally follows the federal requirements, with some additional stringent state effluent limitations and water quality standards.

The state has also issued general permits for stormwater discharges and discharges from animal feeding operations (AFOs). See the state section AG WASTE for more information about AFO permits in Iowa and the state section STORMWATER DISCHARGE PERMITS for information concerning individual and general stormwater permits.

Iowa requires construction and operation permits for municipal and industrial treatment facilities that discharge treated wastewater to a river or stream. Iowa Department of Natural Resources (DNR) reviews and ...

Read more about NPDES