Pumpout station. A facility that pumps or receives sewage from a type III marine 
sanitation device (holding tank) installed on board vessels.

Suggested:

Pumpout facility means the structures, equipment, and operation that provide services to boaters to remove and dispose of recreational boater septic waste. A pumpout facility includes stationary and mobile structures and equipment, land-based and on the water. Examples of a pumpout facility are land-based stationary pumpouts, land-based mobile pumpouts, pumpout boats, dump stations, and floating restrooms.