I turned off the water to the house to change the valve on a toilet supply line. All of the faucets and the tub were cut off but water kept coming out of the toilet line when I removed the valve. It just kept coming but not at high pressure. The water was warm and the water heater is nearby. Its a slab foundation but I don't think the house has been replumbed thru the attic, and wouldn't such a gravity drain off go to the tub and faucets also? It's a mystery (to me at least)! Any ideas.
Have Wrench, Not Plumber