Case Study
Mains Water Leak Detection in Kingston
Water Rushing Noise With No Services In Use
Tracer Gas, Moisture Mapping and Pressure Testing were used to investigate the symptoms and confirm the cause: hole found in lead water supply pipe.
Google Reviews ★★★★★ 5.0 Rating 70+ Reviews Read Reviews- ✓ Leak Located
- ✓ Mains Water Investigation
- ✓ Lead Supply Pipe
- ✓ Repair Completed
The Challenge
Water Rushing Noise With No Services In Use
The client could hear water rushing through pipework inside the property even though no water services were being used. That symptom suggested water was still moving somewhere on the supply pipework and needed a controlled mains water leak investigation.
- ✓ Water could be heard moving when no services were in use
- ✓ There were no visible signs of a leak at the property
- ✓ A mains water leak was suspected
- ✓ The source needed to be confirmed before targeted repair
Investigation
Investigation Evidence
Selected photos and videos from the investigation sequence showing the evidence-led approach used on site.
Investigation
Testing The Water Supply Route
The investigation used pressure testing, tracer gas and moisture mapping because the symptom pointed to water movement on a concealed supply pipe. Pressure testing helped confirm the pipework was losing water, tracer gas helped narrow the escape point without opening broad areas, and moisture mapping helped interpret where escaped water was travelling through the surrounding ground.
Tracer Gas
Tracer gas testing helped confirm or narrow concealed leak locations.
MethodMoisture Mapping
Moisture mapping helped assess water movement and affected areas around the suspected leak.
MethodPressure Testing
Controlled pressure testing helped confirm whether pipework or fittings were losing water.
Findings
Hole Found In Lead Water Supply Pipe
The investigation found that the lead water supply pipe had developed a hole. This explained the rushing-water noise: water was still moving through the supply pipe even when no taps or appliances were being used. Because the escaping water was soaking into the earth, specialist testing was needed to locate the fault without relying on visible leak signs.
- The defect was found on the lead water supply pipe
- Escaping water was tracking into the earth
- No surface leak signs were visible before investigation
- The findings explained the rushing water noise heard by the client
Outcome
Leak Located And Repaired
- ✓ Leak Located
- ✓ Mains Water Investigation
- ✓ Lead Supply Pipe
- ✓ Repair Completed
The leak source was located and repaired in one visit. Confirming the defect meant the repair could be targeted to the failed section of supply pipe rather than opening unnecessary areas.
Investigation Insights
What This Investigation Shows
- ✓A rushing water noise can indicate active water movement even when no services are being used.
- ✓A mains supply leak may escape into the earth without leaving obvious surface staining or pooling.
- ✓Pressure testing, tracer gas and moisture mapping can be combined to narrow a concealed supply pipe fault before access is made.
- ✓Confirming the failed pipe section allows repair work to be targeted rather than exploratory.
Local Coverage
Leak Detection In Kingston
This investigation was completed in Kingston, London.
We regularly carry out leak detection investigations across Kingston and surrounding areas.
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