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Pollution prevention systems
This document discusses marine pollution and sewage treatment regulations. It defines marine pollution as the introduction of substances into the marine environment that harm marine life. Approximately 80% of marine pollution comes from land-based sources like agricultural and industrial runoff. The MARPOL convention prohibits sewage discharge within 3 nautical miles of land unless the sewage has been treated by an approved system. For untreated sewage, discharge is banned within 12 nautical miles.
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