Oil and Grease includes a variety of substances including fuels, motor oil, lubricating oil, hydraulic oil, cooking oil, and animal-derived fats. The source of these substances are typically human derived. Oil and grease pollution can create chemical oxygen demand and reduce aquatic organisms’ ability to reproduce and survive. Though toxicity varies among different types of oils, refined oils are generally more toxic than crude oils.
Various hydrocarbons found in fuels can pose a wide range of human health problems, from affecting the liver, kidneys and blood to increasing the risk of cancer.