I carry a 5 gallon water jug, and a 12 volt pony pump with hose attached to inlet and outlet. I installed a 12 volt plug by my water inlet of trailer. I just fill my water jug, put it on the ground near the water fill location and put one hose end into the jug and the other end into the filler and then plug in the pump and watch the water transfer. No more holding the water jug up and having someone hold a funnel so the water can be poured in.
TV: 2007 GMC 1500 Crew Cab 5.3L
Brake Controller: Tekonsha P3
Hitch: Equal-i-zer 4 point wd/sway control
Trailer: 2015 Cherokee 274RK
2011 Grey Wolf 26RL, 2009 Cikira 19 EXP hybrid, 2008 Clipper 108st (pop-up)