How the method contributes
Correlation compares signals picked up at different points to help estimate where a leak-related sound may originate. Reliable information about the route, pipe material and length is important to interpreting the result. It is a potential tool for suitable supplies, not a replacement for understanding the network or checking the findings.
Where it can be useful
- Suitable incoming supply pipework
- Longer accessible supply runs
- Supporting a buried leak investigation
Its practical limitations
Part of an investigation, not a guess
The engineer chooses the methods that can usefully test a possibility. Results are compared with the property layout and symptoms before access is proposed. See the full investigation and repair process.
Related service
Mains water leak detection
Investigating unexpected water loss on a private incoming supply.
When this method may be part of your visit
Tell us the symptoms, previous findings and any restrictions on water isolation. The engineer considers this method alongside the system layout and other available evidence. A test result must be interpreted before choosing an opening or repair.
Read the residential investigation and repair scope, or find your local coverage information.