You'll find several convenient dump stations for your RV near McClain, Mississippi.Cypress Hill RV Park offers a dumping station that includes black and grey water disposal, fresh water fill-up, a hose for flushing tanks, and a trash bin.Military Park - Lake Walker Family Campground also provides dumping services for black and grey water. Paul B. Johnson State Park has a waste disposal station that is available to both campers and non-campers, but it is recommended to call ahead to ensure availability.Multipurpose Center offers a free dump station for both black and grey water.