In Alder, Washington, several convenient RV dump station options exist.- Mill Town Shell is a popular choice, offering dumping facilities for black and gray water, fresh water, and a hose for flushing tanks.- Rainier View RV Park also provides dumping services and an RV trash bin for easy waste disposal.- Mounthaven Resort offers dump stations for black and gray water and access to fresh water.- Military Park - Holiday Park Fam Camp is another option in the area with reliable RV waste disposal facilities.