NO DISCHARGE AREAS

Vessels equipped with a Type I or II MSD travelling in a No-Discharge area are prohibited from discharging treated sewage. In fact, the MSD must be secured properly to ensure that sewage discharge will be prevented (ie, close seacock and padlock). Under federal law, completely enclosed freshwater lakes or bodies of water are by definition "No-Discharge" areas. Other EPA approved No-Discharge areas are listed on this EPA web site:

http://www.epa.gov/owow/oceans/regulatory/vessel_sewage/vsdnozone.html#table1