Meter moving overnight at a house with a garage
The property
A 1970s detached house with an integral garage. The supply comes in through the garage, under its concrete floor, to a stop tap in the utility room.
The problem
The couple living there, both out at work all day, saw the bill jump. Readings at bedtime and in the morning showed water passing all night.
How we found it
With the utility stop tap shut the meter still turned, which put the leak between the meter and that tap. The ground microphone found a hiss on the garage floor near the wall, and tracer gas surfaced at the same place.
The outcome
The spot on the garage floor was marked and photographed. The owners agreed the quoted repair, and a small patch was broken out for it while we were there.