Welcome to the forums, tough start with a water leak.
TBRich offer a interesting technique using your own water system to look for a leak, I have an alternative suggestion.
Do an Air test for leaks.
Similar to how you would blow out the water system for winter storage, but with a twist. Make your own pressure test tool. A trip to home center or hardware store req'd. Using a plumbing T with one end connecting to your water inlet connection, the side gets the pressure gage and then a tire stem to connect to an air hose. Then using a small compressor with a regulated air output set at say 35-40 PSI you then pressurize your system just like inflating a tire. As soon as it shows 35 PSI, stop inflating. As you are filling via a tire stem removing the air supply the system will hold air then watch the gage pressure. Pressure holds, good news, pressure drops, bad news. Time to listen for leaks. Good news using air doesn't make a potential mess. This test is very similar to what a plumber does to test water pipes on new construction.
This same tool can help winterize.
2005 Dodge Ram 2500 5.9L 6 Speed
16" Michelins, Hi Spec Wheels, Max Brake, Carslile Actuator, Equal-i-zer, Dill TPMS. Campfire cook.