You have a few options when it comes to dumping in Malone-Porter, Washington.Rest Area - Elma is a convenient stop with dump facilities available for black water, gray water, and freshwater. They also provide a hose for flushing tanks.Another option is Elma RV Park, which offers a dump station and an RV trash bin for your convenience.Astro Express is another popular choice that provides easy access to dumping facilities.Lastly, the Elks Lodge in Malone-Porter also offers dump stations for RV waste disposal.