DES MOINES, IOWA (May 2, 2025) — On April 23, The Iowa Environmental Council (IEC) commented on the solicitation for stakeholder feedback on “WOTUS Notice: The Final Response to SCOTUS; Establishment of a Public Docket” from the Environmental Protection Agency (EPA). The new rulemaking would narrow the scope of WOTUS to comply with the Sackett decision by the US Supreme Court. 

The Sackett ruling — a case brought by Idaho farmers in 2023 — questioned whether the Clean Water Act’s definition of “navigable waters” applied to wetlands and resulted in reduced protections for wetlands and adjacent tributaries. The WOTUS definition the EPA adheres to determines the scope of water quality, water supply, and ecosystem protections.

IEC’s comments request that the EPA adopt a definition that protects the maximum extent of waters as allowed by Sackett

IEC argues that a rule narrowly interpreting the Waters of the United States would worsen environmental health and recreation assets in Iowa, with most significant impact on wetlands and ditches. Based on a recent analysis by the Natural Resources Defense Council, Iowa stands to lose protection for between 41 percent and 98 percent of the few remaining wetlands in the state. This could have devastating impacts on agricultural health in flood-prone areas, urban run-off and stormwater management, habitat for threatened wildlife, and reduced ecosystem services, such as natural water-quality purification. 

Often, especially in recent years under severe drought, Iowa’s fields and urban communities are vulnerable to runoff from flash flooding. IEC comments: “Each acre of wetland in Iowa provides $745 in flood-protection value annually.

“Cumulatively, this amounts to $477 million per year in reduced flood costs for the state. In the last six years, we have had 71 percent of our counties declared disaster areas due to flooding, and forty percent of counties were declared disaster areas due to flooding more than once.” Limiting or constraining federal protections on WOTUS would undermine state efforts to address future flooding events. 

IEC General Counsel Michael Schmidt provided comments orally to the EPA at a stakeholder session on May 1. Read IEC’s submitted written comments here.

The Iowa Environmental Council is the state's largest and most comprehensive environmental alliance, comprised of diverse organizations and individuals working together to protect Iowa's natural environment. Through education, advocacy, and coalition-building, the Council raises awareness, generates action, and creates large-scale change. We work on federal, state, and local public policy issues to ensure a just, healthy environment and sustainable future for all Iowans.

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