This is a dump station inside the Capitol Reef National Park.  We did not stay in the campground but needed to dump and fill water.  The campground is very easy to access and is about a mile from the park’s visitor center.  Follow the signs off Hwy 24 and you cannot miss it.  You want to pull-in at Loop A&B and the dump station is immediately to your left.  It is $5 to dump and the potable water is free.  The potable water is clearly marked and is at the dump station as well.  There are two spigots for potable water so if you are just filling jugs, you can fill, and any RVs can fill with the other water hose or dump at the same time.  There are also dumpsters.  The $5 is paid as an honor envelope system and you can drop off your envelope at the station right by the turn to the dump so make sure you have change.  The area was nice and wide and easy to get in and out.  We could not find any other places to dump nearby so we stopped twice (once on the way in and again on the way out).