[JRTJH]

I've got the same "43 gallon fresh water capacity" in my Cougar. That's 36 gallons in the FW tank, 6 gallons in the water heater and 1 gallon in the plumbing runs. Total: 36+6+1=43. Usable water, about 35 gallons. We always carry 2 WalMart blue 6 gallon jugs (12 gallons extra) that we can fill on a run to town if there's no water available at the campground. With the 27 gallon blue tote, we are "good to stay" until the black tank is full. That's usually 8 days if we use the bathroom "judiciously" (DW has toilet privileges/I use the outside bushes except for "constitutionals")..... We don't use the blue tote to empty the black tank.