A dump station is a place where raw sewage may be entered into a sanitary sewer system in a safe and responsible way. Dump stations are often used by owners of motorhomes, campervans, recreational vehicles or boats that are equipped with toilet facilities and a sewage holding tank, also known as a blackwater holding tank. The holding tank can be safely emptied at a dump station. Greywater holding tanks can also be emptied at a dump station.