The type of recreational vehicle dump stations you will find on this app is private, public, RV park, non-park, municipal, truck stop, rest stop, campground, camping, resort, commercial, pay, donation, and free. The RV dump station, dump point you choose to empty your gray and black water holding tanks is up to you; we're hoping that you will choose a green, environmentally friendly method and location. It has approximate 12,800 dump stations listed in United States of America.