Wallingford - I 91

At a motorway-style rest area, there's a facility for emptying waste tanks and filling up with water. It's unclear whether the water is potable. Be aware that there's a sign indicating specific dates (see photos). There's a large parking area, but it's unclear if overnight stays are permitted. In any case, dump stations are rare in this area. We were happy to finally be able to empty and fill up our tanks.