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There are two: Point Source (Easily identifiable sources) and Non-point Source (Larger, dispersed, and often difficult to identify)

Point Source Examples: Smokestack of a coal burning power or industrial plant, drain pipe of a factory or an exhaust of a car.

Non-point Source Examples: Pesticides, Runoff of Fertilizers and pesticides from farmlands, gold courses, and suburban lawns and gardens.

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14y ago

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