EPA Administrator Announces Update to Iowa’s Impaired Waterways List Amid Lawsuit

Cedar Rapids Waterloo Iowa City & Dubuque, IA, October 12, 2026 — U.S. Environmental Protection Agency Administrator Lee Zeldin announced on Tuesday that the agency is updating Iowa’s list of impaired waterways. The announcement was made during Zeldin’s visit to the state.

This development occurs while a lawsuit remains active, challenging the EPA’s prior decision to remove seven specific waterways from the state’s impaired list. The waterways in question had been flagged for nitrate impairment.

The specific details regarding the nature of the update to Iowa’s list of impaired waterways were not immediately available. The EPA Administrator’s visit and subsequent announcement highlight ongoing efforts to address water quality concerns within the state.

The ongoing lawsuit focuses on the EPA’s earlier determination to delist seven waterways. The legal challenge was initiated following the agency’s decision to remove these bodies of water from the list, which identifies waterways that do not meet water quality standards and require restoration efforts. The primary reason for their previous listing was identified as nitrate impairment.

Further information regarding the scope of the updated list, the specific waterways included or removed in this latest revision, and the EPA’s rationale behind these changes has not been publicly disclosed by Administrator Zeldin or the agency at this time.

The situation underscores the complex and often contentious process of managing and regulating water quality at the federal and state levels, particularly concerning agricultural runoff and its impact on water bodies.

Story summarized from the original created by Robin Opsahl on www.kcrg.com, see more information here.

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