As I prepare for our first year with our second trailer (21bhe), I re-visit my contention that the chance of contaminating my freshwater hose from my own black tank when hooking it to the black tank flush is nearly zero. As they say, $hit rolls down hill and the flush is uphill of everything. I never used it at the dump station on my old trailer because it was opposite the side from which you dump. Now that it is same side, I may actually use it at the dump. But then I realize the hose is now down hill of any fecal matter that may be left on the hose bib and spout at the dump. Anyone mod the quick connect hose in the utility cabinet to be able to pull from the fresh tank, while at the dump and flush using your leftover fresh tank and TT pump?