Leak detection methods

A division of Anyleak.ca and Leak.ca

50+ Water Leak Detection Methods & Technologies

The most comprehensive collection of water leak detection methods in British Columbia. Every technique we use, explained in detail with applications, advantages, limitations, and equipment.

Acoustic Detection Methods

Acoustic Listening Survey

Using ground microphones and listening discs to detect the sound of water escaping from pressurized pipes through soil, concrete, and building materials.

Leak Noise Correlation

Mathematical calculation of leak position using two sensors placed at known access points along a pipe, measuring sound arrival time differential.

Sonar Hydrophone Detection

Underwater acoustic sensors inserted directly into the water column through hydrants or taps to detect leaks in large-diameter and deep-buried pipes.

Ultrasonic Leak Detection

Detection of high-frequency sound waves generated by gas or liquid escaping under pressure through small orifices — inaudible to human hearing.

Correlating Noise Loggers

Permanently installed acoustic sensors on hydrants and valves that listen during quiet nighttime hours and transmit data for correlation analysis.

Permanent Acoustic Monitoring Systems

Always-on acoustic sensors installed permanently on plumbing systems, providing 24/7 leak detection with automated alerts.

Hydrophone Array Monitoring for Water Mains

Multiple hydrophones deployed along a water main section for continuous acoustic monitoring and precise leak location.

Acoustic Data Logging for Long-Term Monitoring

Deployment of acoustic data loggers that record sound pressure levels over extended periods to identify developing leak patterns.

Thermal & Imaging Detection Methods

Infrared Thermography

Non-contact thermal imaging that detects temperature differences caused by moisture accumulation behind walls, ceilings, and floors.

Video Pipe Inspection (CCTV)

Push-camera and crawler-cam inspection of sewer, drain, and pipe interiors to visually identify leaks, blockages, cracks, and root intrusion.

Borescope (Inspection Camera) for Concealed Spaces

Flexible or rigid borescope cameras that inspect concealed spaces inside walls, ceilings, and pipe chases through small access holes, minimizing damage.

Core Sampling and Analysis

Physical extraction of small material samples from building assemblies for laboratory analysis of moisture content, mould, and contamination.

Infrared Roof Moisture Scanning

Aerial or walk-on infrared scanning of roof surfaces to identify trapped moisture beneath the membrane or within roof insulation layers.

Thermal Radiant Loop Mapping

Infrared mapping of in-floor radiant heating systems to identify loop circuits and locate leaks through temperature distribution analysis.

Radar & Subsurface Detection Methods

Ground-Penetrating Radar (GPR)

Radar pulses that image subsurface conditions to map buried pipes, identify voids, and detect soil saturation zones indicating underground leaks.

Side-Scan Sonar for Submerged Leak Detection

Underwater sonar imaging for locating leaks in submerged pipes, reservoirs, tanks, and marine structures.

Satellite Leak Detection (Remote Sensing)

Satellite-based radar and thermal imaging that detects underground leaks across large geographic areas — ideal for municipal pipeline networks.

Tracer & Chemical Detection Methods

Tracer Gas Testing

A 95:5 nitrogen-hydrogen gas mixture is injected into an isolated pipe section. The gas escapes through leaks and rises to the surface for detection by a sensitive gas sniffer.

Fluorescent Dye Testing

Non-toxic fluorescent dye is introduced into the water system. The dye appears at leak points under UV light, clearly identifying the leak source.

Conductivity / Resistivity Testing

Measurement of electrical conductivity of water to trace migration paths and identify ground water sources in below-grade structures.

Gas Sniffer Detection for Tracer Gas

Electronic gas detection instruments used to locate tracer gas escaping from leaks, providing sensitive detection of hydrogen-nitrogen mixtures.

Gas Tracer Injection Systems

Specialized equipment for injecting hydrogen-nitrogen tracer gas into isolated pipe sections for leak detection.

Pressure & Flow Detection Methods

Hydrostatic Pressure Testing

Isolating a pipe section and pressurizing it to verify integrity. Pressure drop over time confirms a leak, and the rate of drop indicates leak severity.

Pressure Decay Testing for Slab Leaks

Monitoring pressure drop in isolated slab-embedded pipes to confirm leaks and estimate flow rate before committing to slab cutting.

Flood Testing of Waterproofing Assemblies

Controlled flooding of isolated deck, balcony, and roof sections to identify membrane breach locations under realistic water exposure conditions.

Standpipe and Fire Riser Leak Testing

Pressure testing of standpipe systems and fire risers to verify integrity and identify leaks in fire protection systems.

Electrical & Electronic Detection Methods

Electronic Leak Detection (ELD)

Low-voltage current applied across waterproofing membranes to detect breaches. Electrical resistance paths reveal pinholes and defects in flat roofs and waterproofing.

Psychrometric Analysis for Moisture Investigations

Analysis of temperature, humidity, and dew point relationships to understand moisture behaviour in buildings and identify condensation risks.

Air Leakage Testing (Blower Door)

Building pressurization testing to identify air leakage paths that also allow water intrusion in BC's wind-driven rain climate.

Stormwater System Inspection (CCTV + Flow)

Specialized inspection of stormwater management systems including catch basins, storm drains, and retention systems for leaks and blockages.

Vapour Barrier Integrity Testing

Testing the continuity and effectiveness of vapour barriers in building assemblies to prevent moisture migration and condensation.

Sub-Slab Depressurization Testing

Testing the effectiveness of sub-slab depressurization systems for radon mitigation and identifying slab leaks through pressure field analysis.

Conductive Mesh Testing for Geomembranes

Electrical method for testing the integrity of geomembrane liners in ponds, reservoirs, and green roof systems using conductive grid arrays.

Electrical Capacitance Testing for Moisture in Materials

Measurement of the dielectric properties of building materials to assess moisture content without physical contact.

Need Leak Detection? We Use All 50+ Methods

LeakInspections.ca — a division of Anyleak.ca and Leak.ca. Call 604-239-9934.

Request an Inspection Call 604-239-9934 Email Us