Oh oh, water leak

Atwood water heater tanks are aluminum which are known to leak either through pinhole openings at weld points or because the tank itself has split. A friend of ours had exactly the same experience a couple of years ago while camping so together we pulled his tank ... fortunately in his case the leak was at a weld spot so he was able to later have it successfully aluminum welded and avoided having to buy a new tank. That said, I've personally seen several Atwood water heater tanks at my local dealer that did split wide open - not a pretty sight - with the only practical recourse being to replace the tank. Fortunately Atwood does sell replacement tanks and the kit includes the required gasket set which you will need because you'll destroy the originals in the process of removing the damaged tank. Although a leak could occur at a fitting most Atwood leaks I've seen have been the tank itself, which is often not apparent until you remove the tank from the trailer and inspect it.