I agree with Larry. If you are able to use city water you would be able to track down your leak at your leasure.
To check the wood floor that you think is damaged.
1 - get an AWL
2 - get a scrap piece of plywood or OSB.
3 - push the awl lightly into the scrap so you get a feel what that feel like.
4 - go to the damaged floor and repeat what you did on the scrap. If the floor is damaged you will be able to feel the diference.
The good thing about that is you don't have to pull up carpet to check the floor.
That's my story and I'm sticken to it