EPA Finalizes Biden-era Delaware River Water Quality Standards

Sept. 22, 2025, 9:29 PM UTC

The EPA finalized a water quality rule for the Delaware River Monday that was first proposed during the Biden administration.

The Environmental Protection Agency’s rule, proposed in 2023, will help protect two species of sturgeon by revising water quality standards for a 38-mile stretch of the river between Philadelphia and Wilmington, Del.

“EPA’s final rule will help protect this vital water resource while supporting fish populations and strengthening economic opportunity for Americans living and working in the mid-Atlantic,” EPA Administrator Lee Zeldin said in a statement.

The rule will ensure that the oxygen-sensitive fish will have sufficient water quality ...

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