Case Study

Mains Water Leak Detection in South Woodford

High Water Consumption And Supplier Enforcement Risk

Thermal Imaging, Moisture Meter, Acoustic Detection, Tracer Gas and Tracer Gas Sniffer were used to investigate the symptoms and confirm the cause: damaged plastic supply pipe identified.

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  • Leak Located
  • Non-Destructive Investigation
  • Minimal Disruption
  • Repair Completed

The Challenge

High Water Consumption And Supplier Enforcement Risk

The property owner had been contacted by the water supplier regarding unusually high water consumption and faced possible enforcement action under Section 75 of the Water Industry Act due to waste of water.

  • Water supplier reported unusually high consumption
  • Potential Section 75 enforcement action was raised
  • The leak source was not visible
  • A rapid mains water leak investigation was required

Investigation

Investigation Evidence

Selected photos and videos from the investigation sequence showing the evidence-led approach used on site.

Mains water leak detection in South Woodford project image 1
Initial mains water leak investigation area
Mains water leak detection in South Woodford project image 2
External supply route checked during the survey
Mains water leak detection in South Woodford project image 3
Thermal imaging used to support the investigation
Mains water leak detection in South Woodford project image 4
Moisture readings taken around the suspected route
Mains water leak detection in South Woodford project image 5
Acoustic detection used on the supply pipe route
Mains water leak detection in South Woodford project image 6
Tracer gas equipment prepared for mains water testing
Mains water leak detection in South Woodford project image 7
Tracer gas sniffer used during the external leak investigation
Mains water leak detection in South Woodford project image 8
Water supply pipe area assessed
Mains water leak detection in South Woodford project image 9
Investigation evidence recorded for the water supplier issue

Findings

Damaged Plastic Supply Pipe Identified

The leak was traced to a plastic water supply pipe that had been damaged by rodents. Gradual damage had caused significant water loss over time.

  • External supply pipe route was investigated
  • Rodent damage was identified on the plastic supply pipe
  • The damaged pipe had caused significant water loss
  • The findings explained the unusually high water consumption

Outcome

Leak Repaired Within A Single Day

  • Leak Located
  • Non-Destructive Investigation
  • Minimal Disruption
  • Repair Completed

The leak was located and repaired within a single day. Water usage returned to normal and enforcement action was avoided.

Investigation Insights

What This Investigation Shows

  • Supplier consumption warnings can indicate significant hidden water loss before the damage is obvious inside.
  • The investigation had to identify the failed supply pipe rather than just confirm that water was being wasted.
  • Finding rodent damage to the plastic supply pipe explained why water usage had increased over time.

Local Coverage

Leak Detection Across London

This investigation was completed in South Woodford, London.

We carry out leak detection investigations across London, including mains water leak detection where symptoms suggest a concealed supply pipe issue.

View Leak Detection in London

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