[pjay23x]

It sounds like the toilet is running from the basement but it is not. I turned off the water line from the house and the sound stopped, also I noticed the basement concrete floor have two very warm spots that is getting hotter under the washing machine

[hkstroud]

That indicates that there is a hot water line underneath the basement floor and that it is leaking. This piping is probably from the water heater to the washer.

[ballengerb1]

I agree but it is unlikely that a water heater in the basement would be piped under the slab going to a washer in the basement. Can yiou trace the hot water line to and from the washer, it would normally go up the wall and be piped overhead.

[hkstroud]

I agree with Bob that it would be unusual for hot water pipe to go under basement slab. But you did say it was warm. Also after giving it a little thought, I don't think you would hear the hissing sound of a leak if it were under the slab. Could a hot water pipe be leaking in the wall and the water being soak up by the concrete?

You could verify that it is a hot water leak by leaving the main valve on and closing the cold water stop valve to the water heater.

[speedball1]

Open up your water meter and check the below pointer. If it's moving day. Shut the cold water supply off to the heater. You have a leak in the hot water pipe in the slab. The problem is that you don't know what that pipe feeds so you can't simply And off and run a new one. I see no other way than to open up the slab and repair the leak. Good luck, Tom