Water leak

Hello again, I posted earlier about a strange noise under my rig, I think that is resolved. Thank you for all the help. I now have another issue. At the corner on my bathroom and bedroom the rug is soaked. I took a panel off the bottom of the shower and it is soaked under there also. I can't see where it is coming from. We are hooked up to city water, I shut that off to see if the pump cycles with everything off. Any ideas where it could be coming from, it hasn't rained all week. I took the shower valve off the wall thinking it might be there.no, Are all the connections buried in the walls and floor? Is there a way to access them without cutting into walls and floors to check for leaks