Reference earlier post about r-dome.  

Two Aqua-Tainer 7 gallon jugs.

One 260 gph transfer pump w/switch

25 foot hose cut into two lengths 

Various 12v power extensions from battery bank SAE connector used for solar or aux.

Water transfers very fast. Extensions long enough so I really don't have to remove jugs from TV. Two trips to water source = 28 gal. Jugs slide perfectly under dinette table while traveling.

 

If you really require a pump, then how about the small DC types. I have one running on my raised garden for watering. Just 3.6w to run and 240L/hr capacity.

These bags have heavy duty grommets so they look like they are meant to be hung.  I'm thinking of thowing some line over the roof and tying it to the steps on the other side so I don't have to hold them up the whole time.

Not towing with the water.  Driving to site empty, then filling it there (with a hose attach if available, or by water bandit).

While in E KY last month, I was unable to get to a potable water faucet, for several days.  I went to a store and bought 1 gallon jugs of water and poured them into the fresh tank.  The tall square jugs work well, those shaped like milk jugs spill the last few ounces.  They were 78 cents each.  Cheap to get coffee and a shower after a while. 

Since my Coleman jugs were such a failure pouring into the fresh tank, I bought 2 blue kerosene jugs and an old style gasoline can spout.  After a washing, that worked well, but you can't get around 5 gallons of water weighing 42 pounds.  

Mount it to a board and attach some tubing and a couple of 12v battery clips....and carry a motorcycle battery....

Or just transfer the 5 gallons once per day instead of all at once. 

And as OG mentioned, you don't want TWO full water tanks on an r-pod anyway. 

+1

We go 10 days at a time boondocking before having to think about getting additional water but also carry a couple of 5 gallon Coleman jugs.  We have had them for 8 years now and have never had a problem with them leaking or having any issues with them, except for the fact that indeed they are heavy when full.  At the end of 10 days or longer when we get low on FW it is S.O.P. for us just to dump both tanks.  AS OG wisely states, you don't want to be carrying 2 or 3 30 gallon tanks around that are full, it could prove to be a potentially disastrous situation.

However, this thing is HEAVY when full of water.  And our tank holds ~30g, so need to fill up about 6 times, which meant just manually holding the thing up over the tank while it drained six times...exhausting.  I was wondering if anyone has figured out a way to hang a water bag on the side of the rpod?  I was even thinking about pulling the car up alongside to sit it on top of that for additional height, but the configuration of this campsite made that impossible.  Like I said, it's heavy, so I wouldn't want to just drill some holes in the side of the rpod for hooks as I'd worry that would tear the side open.  But maybe some kind of counterbalance thing across the roof?

Curious as to what others may have jerry rigged for this purpose.  (Also I looked into using a drill pump...there are NO potable water friendly ones I could find on the market.  There is one sold by the smart bottle people for $400 (!) that all they've said is that the original manufacturer grease was changed out for FDA food grade grease...but they still won't warrant it's for potable use because the original manufacturer won't warrant as such, so not really sure what that gets you, for an expensive price).  Same with a jiggler pump...they're all for gasoline, none for water I could find (and anyway the one we experimented with was far more difficult to use than just holding the water bag up).

I'm happy with the water bags, just not happy serving as Charles Atlas beneath them.  Any thoughts/suggestions on how to rig a hanging setup?