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Updates to the National Pollutant Discharge Elimination System Definitions and Exclusions

RIN
2040-AG56
Last modified
Oct 26, 2026
Comment window
closes in 13d
Animal Welfare Institute filings
1

Activity

Animal Welfare Institute filed 1 comment on this docket between Oct 23, 2026 and Oct 23, 2026. 13 other organizations filed here. The comment window closes in 13d.

What Animal Welfare Institute filed (1)

Abstract

The proposal would revise the regulatory definition of “discharge of a pollutant” to align with the Clean Water Act’s (CWA) definition of “discharge of a pollutant” or “discharge.” The regulatory definition would be updated to reflect the statutory exclusion of vessels and other floating craft that add pollutants in the contiguous zone or the ocean from NPDES program requirements. The proposed rule would also make conforming and clarifying changes to the NPDES regulatory exclusion for vessels and other floating craft. The result of the proposed rule, if finalized, would be that the addition of pollutants by a vessel or other floating craft in the contiguous zone or the ocean that is not secured to the seabed would not be a discharge and would not require NPDES permit authorization.

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Co-filers (13)

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