If you boondock at all, you may want to keep it. I replaced my original tank, that was leaking, about 2 years ago with a new tank. I take the old tank with us, empty, in case we need to fill up on water. I put it on some blocks in the bed of the truck and it gravity feeds water into the Airstream water tank. This way I don't need to move the Airstream to refill the water tank.