You'll find several RV dump stations in and around Dumont, Iowa that offer waste disposal services. The R Campground has a dump station that allows you to dispose of black and gray water, refill your fresh water tanks, and use a hose for flushing tanks.The Rest Area I-35 NB/SB Northwood provides an accessible dumping facility for RVers travelling along the interstate highway. They also have trash bins available for your convenience. The City Sewage Plant in Dumont provides a dump station for motorhomes. Call ahead or check their website for operating hours.The Ames Water Pollution Control Facility offers a free dump station, with potable water and trash disposal facilities available as well.