EPA proposes CWA rule to exclude vessel discharges in ocean from NPDES permits

The EPA proposed revising the Clean Water Act definition of 'discharge of a pollutant' to exclude discharges from vessels and floating craft in the contiguous zone and ocean, aligning with statutory exclusions. This would remove certain vessel discharges from NPDES permitting requirements, potentially easing regulatory burdens on shipping. The rule is a proposal, subject to public comment and finalization, and its impact on marine pollution enforcement remains uncertain.