We have been camping for 10 years, I know that does not automatically make me an expert, but here is my opinion. One, if you use your tank for drinking water, you need to sanatise it correctly, failing to do so may expouse you to serious illness or wourse. We allways travel with bottled water for drinking, no problems with taste or other problems! Two you need at least some water in your tank for flushing and washing. We always carry at least 10 gallons as we travel. We usually do not dry camp, so getting water at the destination is not a problem. If you dry camp check first about getting fresh water first before you go! Internet, phone ect. If not available at the destination, somewhere close is an option. 50 gallons of water weighs 750 lbs. that is a lot of weight to be hauling around. Save the gas millage, or consider 750 lbs. of other stuff to haul with you instead of water?
