Leak on a branch to stables and a field trough
The property
A house with stables at the village edge, where the roadside meter also feeds a long branch to the yard and a water trough in the paddock.
The problem
Affinity Water wrote about a large continuous flow. The trough's float valve was working, the yard looked dry, and nobody was sure which way the branch ran.
How we found it
With the yard valve closed the meter stood still, putting the loss on the branch. We walked it with the ground microphone until the sound peaked in the field gateway, where tracer gas also came up.
The outcome
With a long branch on an unknown route, a full day's price was agreed before booking. We dug one hole in the gateway and repaired the pipe, quoted separately.