Ship sewage will no longer be allowed to foul the Baltic Sea.

The International Maritime Organization (IMO) on Friday agreed to ban the discharge of sewage from passenger ships and ferries in the Baltic Sea.

The decision comes after a three year WWF campaign to stop the dumping of waste water in the Baltic Sea.

WWF has since 2007 worked hard to convince governments and the shipping industry to ban the discharge of waste water straight into the Baltic Sea. The organization had already succeeded in receiving voluntary commitments from many passenger ferry lines and cruise companies that traffic the Baltic Sea.