I needed to remove a toilet today... Unfortunately the shutoff was
corroded so I shut off the main water supply in the house.
An hour has passed since then, and the toilet has been removed. Now,
the supply line is leaking. Once every minute or so, it gurgles and
releases about 1/8 to 1/4 cup of warm / hot water. This is worrying
me because I assumed the supply line is normally cold water.
What could be causing this? The flow is increasing gradually in both
volume and frequency.