Badlands National Park has a Dump station at the campground for $1.00.

Yea! The north end of Wall just west of Main Street is an RV Park, $10.00 fill and dump. They are very nice as well.

Cedar Pass Campground is 18 miles down the road inside the National Park. It has a dump station, garbage bin, and potable water. The sign says $1 but they told me at the entrance it is free and I used it with no problems.

The town of Wall is eight miles away

There is a dump station at Cabela's in Rapid City if you're headed that way. 3231 E Mall Dr, Rapid City, SD 57701 605-388-5600

We went to Frontier Cabins, travel North on 240 (towards Wall, SD). It was a few miles from Nomad View Dispersed. On the side of the check in building is a water spigot. We asked if we could fill our water bladder and they said it wasn’t a problem at all. Always talk to them first but they were very nice about it.

Not sure but Wall should have someplace. Sorry not much help.

There are two campgrounds in Wall. Might check with them.‘