When you're in Alderton, Washington, you'll find several convenient options for RV dumping.The Elks Lodge offers a dump station where you can dispose of your black water and gray water.The Sumner Wastewater Treatment Plant is another nearby option that provides dumping facilities for your RV.If you're attending an event at the Western Washington Fairgrounds or The Puyallup Fairgrounds, they have dump stations available for use.Additionally, the SeaTac Rest Area has a dump station where you can empty your tanks and refill them with fresh water. Remember to bring a hose for flushing tanks and dispose of any other RV trash in the designated waste disposal bins.