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The U.S. Environmental Protection Agency (EPA) is finalizing revised water quality standards (WQS) largely as proposed for certain water quality management zones of the mainstem Delaware River under the Clean Water Act (CWA). Specifically, the EPA is promulgating a designated use of protection and propagation of resident and migratory aquatic life and corresponding dissolved oxygen water quality criteria for the mainstem Delaware River in Zone 3, Zone 4, and the upper portion of Zone 5 (in total, river miles 108.4 to 70.0).
Published
Sep 29, 2025
Effective
Nov 28, 2025
Citation
90 FR 46483
Agencies
1
Full text not available in our database.
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EPA-HQ-OW-2023-0222
FRL 10760-02-OW
2040-AG30
40 CFR 131