You're right, Ocean Navigator author is wrong
Unfortunately there are an increasing number of people writing about marine sanitation issues who don't have their facts straight. There's only one place in any US coastal waters in which the discharge of gray water ("galley, bath and shower water") is prohibited: a few small--and clearly marked--areas in The Florida Keys National Marine Sanctuary. And in those areas even bilge water discharge is prohibited. If the article was about ONLY those waters, the writer is correct...but if (s)he means all "no discharge" waters, he's wrong. With the exception of those small areas in the FKNMS, "no discharge" law only applies to sewage, which is defined in the Code of Federal Regulations as "human body wastes and the wastes from toilets and other receptacles intended to receive or retain body wastes." You can read the law at http://www.setonresourcecenter.com/40CFR/Docs/wcd00000/wcd0006d.aspAny chance you could fax or email the article to me?