Howdy and welcome to airforums.com, jbbaldwin! You can find many answers to all of your questions right here.
If the leak is inside the cabin of your trailer, it is possible that the tank has sprung a leak. Other than that, there could be a dripping shutoff valve, if the previous owner installed a bypass. Did you get the Owner's Manual with it? That should show you where the entry point is inside the trailer.
Hope that the leak is a valve, a leaking tank means it's time to shop for a new water heater.
However, if the leak is outside, in the area behind the hatch, there are a few different possibilities, all of them less dramatic.
Where was the water leaking from?