When you're in Pateros, Washington, you have a few options for RV dumping.SunBasin RV Park offers a convenient dump station to safely dispose of your black and gray water tanks. They also provide fresh water for flushing tanks.Another option is the dump station at Grant County Fairgrounds, which provides easy access for emptying your tanks and disposing of RV trash.If you're near the Suncrest RV Park, they have a dump station available for your convenience.Potholes State Park also offers a dump station where you can take care of your RV waste disposal needs.Some locations listed in this article are the nearest of their kind to the starting point, and the actual drivable distance could exceed 200 miles.