If you need to dump black and gray water, you'll find a few options near Iberia, Missouri. Lake Binder Park is one option for dumping, and it also provides fresh water and a hose for flushing tanks. Trash bins are available on-site as well. U.S. Rents It is another location where you can easily dispose of your RV waste in Iberia.Pheasant Acres RV Park offers a dumping station for its guests, but non-guests can use it for a fee. Gander RV of Columbia has an RV dump station that's open to the public for a small fee.