I, at one time carried about 10, 5 gallon jugs and used air pressure to get the water into the trailer. I then went to a 45 gallon hard, plastic barrel that I got from an orange juice company here in the city. Then I went to a 50 gallon hard container like DutchmanSport shows above but still used an air compressor to move the water. I just drilled out the vent in the cap and installed a tire valve. Used that for quite a long time. Now I have two collapsible containers. One is 50 gallons and the other is 60 gallons. Now I have an 8 foot box and do haul a 5er. The 60 gallon one goes just in front of the 5th wheel and behind the aux. fuel tank. The other one goes in the space near the Tgate. I use a regular trailer water pump and adapted it to plug into the rear 7 pin plug. The 45 gallon one came from Camping World and the other one looks like a large AWOL bag as shown on this site, http://discrv.tripod.com/waterboy.html.It took a while to get to me and the pump that came with it was broken. Everything fits into a container when folded up and that goes in the basement storage area. It's all a lot easier on my back.
