Water Mains Leak Detection

💧 Hydrogen-Nitrogen Tracer Gas

We inject a safe hydrogen-nitrogen mix into your pipework to trace escaping gas and identify the precise leak point.

The use of tracer gas is an ingenious, yet deceptively simple approach to finding a water leak in your home. In simple terms, we’ll replace the water in your pipework with a safe gas and use a sensitive above-ground detector to find anywhere that it escapes.

The pressurised gas is harmless and travels effortlessly through common building materials making it the perfect way to discover the source of your leak.

💧 Acoustic Ground Microphones

We listen for escaping water beneath the surface to identify the leak’s exact position. We utilise sound waves to identify and locate leaks in your water pipes.

This method often employs listening devices and amplifiers to detect the noise produced by water escaping the pipe and making contact with the surrounding materials. Both passive and active acoustic sensors can be used for this purpose.

Why homeowners choose us

Your underground water supply pipe is the main artery feeding your property. When it leaks, it wastes water, damages your home, raises your bill — and the water company won’t fix it.

You’re here because something isn’t right:

• Your bill shot up
• The ground is wet or sunken
• Your meter is spinning constantly
• Your pressure has dropped
• You’ve had a leak letter from your water company
• Your neighbours are affected (shared supply)

With us, you’re in safe hands:

• ✔ Same-day leak detection
• ✔ NO FIND, NO FEE
• ✔ Water mains supply pipe repair and full replacement
• ✔ Moling for minimal disruption
• ✔ Full photographic documentation
• ✔ Itemised VAT invoice
• ✔ End-to-end service: Detection → Repair/Replacement → Reinstatement

Speak to an engineer now: 0800 037 7078

Who is responsible for the leak?

Your Water Company is responsible for:

• Public water mains in the road
• The external boundary stop tap

You (the homeowner) are responsible for:

• Your private mains supply pipe from the boundary to your home
• Leaks under your garden, driveway, paths or foundations
• Pipework feeding your home internally
• Shared supply pipe sections after the split point

If the leak is on your side of the boundary stop valve, it’s almost always your responsibility to fix it.

We can confirm responsibility quickly: 0800 037 7078

30-Second DIY leak test

1. Turn off your internal stopcock (usually under the kitchen sink).
2. Make sure no water is being used anywhere in the property.
3. Check your external water meter.

If the dial or “+” symbol is still moving, you have a leak on your supply pipe.

We’ll confirm and locate it properly: 0800 037 7078

Advanced water mains leak detection

If we can’t locate your leak, you don’t pay for detection.

We use industry-leading, non-destructive leak detection equipment, including:

• Acoustic ground microphones
• Tracer gas leak detection systems
• Thermal imaging cameras
• Digital pipe tracing equipment
• Moisture mapping tools
• Endoscopic inspection cameras
• Digital leak correlation equipment

• ✔ No random digging
• ✔ Minimal disruption
• ✔ Fast and highly accurate leak location

No find, no fee leak detection: 0800 037 7078

We find it. We access it. We fix it. We reinstate.

You don’t need multiple companies. We handle everything from start to finish.

Step one: Leak Detection

We pinpoint the exact position of the leak on your mains supply pipe using advanced equipment.

Step two: Excavation

• HSG47-safe digging
• Underground utility scanning and avoidance
• Controlled excavation to expose the leaking pipe
• Clean, tidy and safe work areas

Step three: Localised Pipe Repair

If the pipe is otherwise in good condition, we carry out a localised repair on the damaged section using industry-approved fittings.

After any excavation or localised repair, we reinstate the ground back to its original condition wherever possible — including:

• Block paving
• Tarmac
• Concrete
• Soil
• Gravel
• Turf

End-to-end leak repair and reinstatement: 0800 037 7078

Can we replace your water mains supply pipe?

YES — we provide full water mains supply pipe replacement across the UK.

Our mains replacement service is ideal if your existing pipe is:

• Old or corroded
• Lead, steel or copper
• Repeatedly leaking
• Undersized and causing low pressure
• On a shared supply
• Too damaged for ongoing repairs

What we provide:

• Full boundary-to-property mains supply pipe replacement
• New blue MDPE pipe installed to British Standards
• WRAS-approved fittings
• Minimal disruption and long-term reliability

Ask about full mains replacement: 0800 037 7078

Water mains replacement methods?

✔ Impact Moling (Preferred Method)

Trenchless installation of a new mains supply pipe with minimal digging — ideal for driveways, patios, paths and lawns.

✔ Open-Cut Trenching

Used only where moling isn’t suitable (for example, heavily obstructed ground or certain concrete structures).

✔ Boundary-to-House Full Replacement

We install a complete new supply pipe from the external stop tap right into your property.

Book your mains replacement: 0800 037 7078

Leak notice letter from your water company?

We regularly help customers who receive leak or high-usage letters from:

• Thames Water
• Affinity Water
• Anglian Water
• SES Water
• South East Water
• United Utilities
• Yorkshire Water

Common letter types include:

• “Continuous Flow” warnings
• “High Usage” alerts
• “Unusual Consumption” notices
• “Leak on Private Pipe” notifications

These letters usually mean:

• Your meter is showing constant water flow
• There is likely a leak on your private supply pipe
• The water company will not repair this for you
• You are expected to arrange leak detection and repair
• They may revisit to re-check your meter

Call us with your letter in front of you: 0800 037 7078

Shared supply pipe leak specialists

If your property is fed by a shared supply pipe, we can help. We specialise in:

• Multi-property pressure and flow testing
• Mapping and finding the shared supply split points
• Locating leaks on shared or individual feeds
• Repairing or fully replacing shared supply pipes (including using moling)
• Assisting with neighbour coordination where required

Shared supply leak specialists: 0800 037 7078

Fixed-priced quotes with no hidden fees

Every job includes:

• NO FIND, NO FEE leak detection
• Free visual external inspection
• Fixed written quotation
• Full photographic documentation report
• Itemised VAT invoice
• No upfront payment
• No hidden extras

Get your fixed quote: 0800 037 7078

Our guarantees

• 12-month workmanship warranty
• WRAS-approved materials on all installations
• MDPE mains pipe installed to British Standards
• Fully insured and vetted engineers
• Clean, tidy reinstatement of all affected areas
• No unnecessary excavation

Speak to a specialist: 0800 037 7078

Responsibility table (Quick reference)

Still unsure who’s responsible? Call 0800 037 7078

What causes water mains leaks?

• Ageing or corroded pipework
• Ground movement or subsidence
• High or fluctuating water pressure
• Weather extremes (freeze/thaw, heat)
• Accidental damage from digging or building work
• Weak or deteriorating shared supply pipework

Find the cause and fix it properly: 0800 037 7078

Fast FAQ

Can you replace my water mains supply pipe?

✔ Yes — including full boundary-to-house replacement and moling.

Do you detect AND repair leaks?

✔ Yes — we handle detection, excavation, repair and reinstatement.

Do you reinstate the ground after you dig?

✔ Yes — we reinstate driveways, paths, patios, gardens, soil, turf and gravel wherever possible.

Do you provide insurance-ready reports?

✔ Yes — you receive full photographic documentation and a VAT invoice.

Is leak detection really NO FIND, NO FEE?

✔ Yes — if we don’t find a leak, you don’t pay for the detection.

Got a question? 0800 037 7078

Call now to fix or replace your water mains supply pipe

You get:

• Same-day service
• No find, no fee leak detection
• Full mains supply pipe replacement available
• Trenchless moling where suitable
• Fixed-price quotations
• Full reinstatement of all surfaces
• Photographic report + VAT invoice
• No upfront payment

Signs of a mains water leak

• Unexplained high water bill
• Water meter spinning when no water is in use
• Wet, boggy or sunken areas in the garden or driveway
• Low pressure at taps and showers
• Hissing or running-water noises when everything is turned off
• Cracks appearing in paving or driveways
• Neighbours also experiencing low pressure (shared supply problems)

If any of these sound familiar, you probably have a mains supply pipe leak.

Book leak detection: 0800 037 7078