I live in a ground floor flat of a Victorian conversion. Late at night when there are no taps running in my flat and all the lights are out upstairs so I assume there are no taps running there I can hear the sound of constant running water coming from the front door. this also continues in the day time.
I know from when I renovated the flat that the sound is coming from the area when the main supply comes in under our front doors and then splits for the supply upstairs and supply downstairs.
Is this sound likely to be a leak at this junction or is this sound normal?
Is there any way of testing for a leak without ripping up floorboards?
Any advice would be greatly appreciated!