Just after Christmas, Carrie in #2 told me that she hears water running in her tub, and the floor is hot. I looked at the crawlspace under the tub, couldn't find any leaks, but tried to listen as closely as I could for the source. It sounded to me like it was coming from the wall. I worried that I would have to take apart the drywall to fix a leaky shower pipe, but could find no evidence of water.
That's when I began to worry... another slab leak?
After failing to shut off the water at the base of the tub (old valve, won't turn without a ratchet), I figured it may just be a faulty shower valve. I resolved to fix it after the new year, and just pay a higher water bill.
Well, Carrie from #2 just called and said that, this morning, she felt a wet spot on the carpet and thought her cat threw up. Now, the carpet is soaked and water is definitely coming from somewhere! *sigh*
Cathy's on her way home, and I'm calling a plumber now. We'll see what's next... probably an expensive re-pipe that I don't have the money for.
Update 1: It is hot/warm water, so at least we won't be completely without. However, I am not looking forward to a week of cold showers (while we get it repiped).
Update 2: Cathy found the spot it is coming out of the carpet, so it is a confirmed slab leak. Crud.