I finally got out and camped for a couple of nights. I was departing really early the following morning so the night before I got an early start on breaking camp. Then came the time to dump the tanks. I had full hookups so that part was pretty easy. I started pulling the handle for the black tank and blue water was started gushing out. I quickly pushed the handle in and inspected the hookup. The hose was not completely connected in place. Thank goodness I was only dealing with treated water and not the other stuff. I fixed the problem and afterward hosed the area off pretty well. And I'm glad I was close enough to the handle but far enough away from the tank hook up.