Marine Discharge Abatement Act

Marine Discharge Abatement Act - Amends the Federal Water Pollution Control Act to prohibit the issuance or renewal of permits for pollutant discharges into estuaries, estuarine zones, the territorial sea, the waters of the contiguous zone, or the oceans unless: (1) the need for the discharge has been demonstrated by the applicant and the Administrator of the Environmental Protection Agency has determined there is no environmentally sound alternative; (2) the permittee establishes an on-going monitoring program for each discharge; and (3) the applicant agrees to include within the permit a provision to allow the Administrator to modify or terminate such permit if such action is in the public interest and necessary to prevent the degradation of such waters.

Directs the Administrator and the Under Secretary of Commerce for Oceans and Atmosphere to review existing guidelines and to promulgate guidelines necessary to prevent the degradation of such waters.

Prohibits the waiver of such requirements for permit issuances or renewals.