NPDES Vessel Discharge Exclusion (Ocean and Contiguous Zone)
Current understanding
To be populated as evidence accumulates.
Evidence log
- 2026-09-04 — Updates to the National Pollutant Discharge Elimination System Definitions and Exclusions: EPA proposed rule (2025) would amend NPDES definitions/exclusions so that ships and other floating craft not fixed to the seabed no longer require an NPDES permit to discharge pollutants in the contiguous zone or the ocean, narrowing Clean Water Act permitting reach over unmoored vessel discharges. (novelty: 3)
Open questions
Related
Contributing findings
Updates to the National Pollutant Discharge Elimination System Definitions and Exclusions
04-sep-2026
novelty 3
per-area 3
introduces