Thread: Newbie question
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Old 04-01-2013, 11:40 AM   #3
Marin
Scraping Paint
 
City: -
Join Date: Oct 2007
Posts: 13,745
On most boats today graywater-- sinks, showers, etc.--- go directly overboard. Gray water holding tanks are extremely rare. Blackwater can be discharged directly overboard in certain waters, not in others. The designation is generally defined by distances from shore.

Black water pumped out by shoreside facilities is sent via the community's sewage system to whatever sewage treatment plant(s) the community has.
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