When it comes to dumping in Colo, Iowa, you have a few options to choose from.The Ames Water Pollution Control Facility is a popular choice for RVers looking to dispose of their black water, gray water, and freshwater. They provide a hose for flushing tanks and an RV trash bin.Another convenient option is Thomas Mitchell Park, which offers a dump station along with other amenities like camping and hiking trails.Love's Travel Stop is another reliable choice with dump station facilities available for RV waste disposal.Lastly, Walnut Woods State Park provides a dump station for easy waste disposal while enjoying the park's natural beauty.