Pinch Pond Family Campground & RV Park is one of the popular options for dumping black and gray water in Sand Hill, Pennsylvania. The station also offers fresh water and a hose for flushing tanks. Gretna Oaks Campground is a great option if you're looking for another dump station nearby. It has a waste disposal facility along with a trash bin. Hershey Conewago Campground is another place to dispose of your RV's waste. The dump station is easily accessible and has all the necessary facilities. Hickory Run Family Campground is also an excellent choice for RVers who need to dump their black and gray water. The location has a clean and well-maintained dump station that's easy to use.