External Water Leak Detection
- Non-invasive commercial leak detection
- UK's no.1 leak detection company
- National coverage
- Award winning service
- Flexible contract options
- Fully insured & qualified







Not sure who is responsible for an external water leak?
Your water supply pipe is the underground connection between the public water main and your property. If a leak occurs within your property boundary, it’s your responsibility to fix it. However, leaks beyond this point are typically the responsibility of the local water supplier.
If you’re unsure where your leak is, we can conduct a full assessment and advise on the best course of action. Our highly trained team use non-invasive leak detection techniques to detect and repair leaks in external water supply pipes and underground water mains across both residential and commercial properties.
What to expect
Detect
We will locate the leak using non-invasive technology, and explain exactly what needs to be done.
Resolve
Our experts will fix the leak with minimal damage to your property. Most of our work will be completed on the same day as detection.
Report
We will provide a comprehensive report within 48 hours. This may also include recommendations for remedial work if necessary.
What our customers say
Signs you have an external water leak
Increased bills
Unexpected increase in water bills without higher usage.
Water meter moving
Water meter continues moving when no water is being used.
Discoloured water
Brown, murky, or discoloured tap water.
Reduced pressure
Reduced water pressure from taps, showers, or appliances.
Cracks appearing
Cracks appearing in driveways, patios, brickwork, or walls.
Muddy or wet patches
Muddy areas, pools of water or unusually lush grass during dry weather.
Spread the Cost of Leak Detection & Repair
We are pleased to offer flexible finance options, making it easier for customers to spread the cost over time.
Through our trusted finance partner, customers can quickly apply online and receive a fast, simple decision. Once approved, payments are made directly to us, allowing work to begin without delay.
Services You Can Trust
Leaks are found on the first visit.
SLAs met nationwide
Jobs completed per year.
Turnaround for board and insurer ready reports.
Worried about an external water leak?
Get in touch with our experts today for a fast response and a no-obligation quote.
Benefits of our expert underfloor heating leak detection
A leak in your external water supply pipe can be difficult to detect, but the consequences can be severe. Left unresolved, leaks can cause significant damage to your property, increase your water bills, and even lead to structural issues.
With our specialist external leak detection service, you can expect:
- Efficient leak identification with minimal disruption
- Early detection to help avoid expensive repairs and further property damage
- Friendly and highly experienced engineers that you can trust to provide clear guidance and honest advice throughout
- Prevention of water damage to protect your home's structure and long-term value
- Reduced risk of damp and mould, safeguarding indoor air quality and wellbeing
- Peace of mind that the leak will be fixed and your home will be protected
Our Comprehensive Leak Detection Toolkit
Our experienced specialists use cutting-edge technology to accurately locate and fix leaks in all types of properties, with minimal damage.
- Tracer gas
- Acoustic ground microphones
- Correlators
- Thermal imaging cameras
- Smoke testing
- Electronic prof testing
- Hand tools and breakers
- Moisture meters
- Endoscopes
- Pressure testing kit
- Pipe tracing detector
- Salts and water testing kits
- Dye sample kits
Why choose us?
- No Call Out Charges and Free Site Surveys
- Multi-Award Winning Company
- No Obligation Quotations
- Competitive Local Pricing
- Flexible Contract Options
- Non-Invasive Repairs & Minimal Disruption
- Fully Qualified with Years of Experience
- All Work Guaranteed
- Fully Insured, riendly and Reliable Staff
- Highly Recommended
The Cost of Delaying Repairs
This flat roof leak repair example shows the difference our specialist approach can make.
Traditional route:
- 51 days
- 9 site visits
- approx. £2,465 in detection and drying (before repairs)
Specialist diagnosis route:
- 8 days
- 2 visits
- approx. £850 (before repairs)
Explore our leak detection services
Contact Your Leak Detection Specialists Today
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Frequently Asked Questions – Leak Detection in Water Supply Pipes in the UK
If you notice an unexplained increase in your water bill, reduced water pressure, discoloured water, or persistent damp patches in your garden or driveway, you may have a leak in your water supply pipe. Checking your water meter for continuous movement when no water is being used can also confirm a hidden leak.
In the UK, the homeowner is typically responsible for repairing leaks within their property boundary, including the underground supply pipe leading to their home. If the leak is beyond this boundary, it is usually the responsibility of the local water company.
Yes, even a small leak can lead to serious issues over time, such as subsidence, foundation damage, damp problems, and increased water bills. Early detection is key to preventing costly repairs.
Leak detection using advanced methods like acoustic listening, tracer gas testing, and thermal imaging can usually be completed within a few hours. The repair time depends on the severity of the leak and access conditions but is often completed within the same day.
Not necessarily. Many leaks can be located and repaired using non-invasive methods that minimise disruption. Our expert team prioritises trenchless repair techniques wherever possible to reduce damage to your property.
Yes, a leak in your supply pipe can cause a noticeable drop in water pressure, especially if the leak is significant. If your taps or shower are running weaker than usual, it could be a sign of an external water supply leak.
If the leak is within your property boundary, you are responsible for fixing it, but it’s still advisable to inform your water supplier. Some companies offer assistance or leak allowances if repairs are carried out promptly.
Leak Detection Guide
Escape of water is now one of the largest drivers of property claims in the UK.
- Around 29% of insurance claims relate to water damage.
- Commercial incidents can disrupt operations for months.
- UK insurers pay out roughly £1.8 million per day on escape-of-water damage.
Most costs are not caused by water. They are caused by delay, guesswork, escalation confusion and poor documentation. This guide helps teams stay in control.










