Pollution and Wastes

What are the sources of oil pollution in the oceans?

Most oil pollution results from minor spillage from tankers and accidental discharges of oil when oil tankers are loaded and unloaded. Other sources of oil pollution include improper disposal of used motor oil, oil leaks from motor vehicles, routine ship maintenance, leaks in pipelines that transport oil, and accidents at storage facilities and refineries.

Source Percent of Total Oil Spillage
Natural seepage 46
Discharges from consumption of oils (operational discharges from ships and discharges from land-based sources) 37
Accidental spills from ships 12
Extraction of oil 3


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