When filling with water, most of it dumps out the side.

I have one garden hose for "clean water" use and one for "dirty" use. The dirty use is for rinsing out the cleanout, etc. The clean use is for the dog's water, filling the fresh water tank and drinking out of.

That's as far as I take it. Oh, I do have a short white hose at the end of the "clean water" hose so the yard guys know the difference.