Re-filling fresh water tank while I dry camping

We also take a yearly trip to Cades Cove. I am good on conserving batteries, but terrible on water. My solution is to carry 4 of the 6 gallon jugs. I mounted a water pump on a board and wired a 12v plug in the storage compartment, close to the fresh water fill port. I cut a couple of hoses to the length needed. I insert one hose into the jug and the other into the fill port. It only takes a few minutes to empty all of the jugs into the tank.