If you need to dump black or grey water, Simpson, North Carolina, has several options for RVers.- The KOA - Smithfield KOA Campground offers waste disposal services, fresh water refilling, and a hose for flushing tanks. - Four Oaks Lodging and RV Resort provide a similar service with a convenient trash bin onsite.- Lanier's Campground also offers dumping services, although it may be less convenient for some travelers due to its location.- EconoLodge is another option in the area that offers a dump station for RVers providing waste disposal services.