Water Main Repair Specialists in London

Greater London Water provides professional and dependable water main repair services across all London boroughs. Whether you’re dealing with an underground leak, a sudden burst, or deteriorating infrastructure, our team delivers high-quality solutions using industry-leading techniques and equipment.

With years of experience handling complex water main problems in both residential and commercial settings, we offer a range of services designed to restore your water system quickly and efficiently. Our expertise includes:

 

• Emergency water main repairs
   

• Water main leak detection
   

• Water main replacement

We have the resources and experience to manage projects of all sizes — from minor leaks to large-scale system failures.

 

Common Causes of Water Main Leaks
 

If your property is affected by a leaking or burst water main, identifying the root cause is essential to prevent future failures. Our engineers will assess the issue and recommend a lasting solution.

Some of the most common causes of burst water mains include:
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​Pipe Age & Material
 

Many older water mains in London are made from cast iron or other outdated materials. Over time, these pipes can corrode and become brittle, increasing the risk of cracks and leakage — especially during seasonal ground movement.

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Water Pressure Surges
 

Sudden increases in pressure can put intense stress on your water main. If the system is already weakened, these pressure changes can cause it to crack, split, or rupture entirely.

 

Accidental Excavation Damage
 

Building work, roadworks, or landscaping can unintentionally damage underground water mains. Even light contact with digging equipment can result in significant leaks or bursts.


Ground Movement from Temperature Fluctuations
 

Cold weather can freeze the ground, causing it to expand and place pressure on buried pipes. In summer, soil shrinkage can cause ground shifts, increasing stress on rigid water mains. These seasonal changes are a common cause of fractures in older systems.


Surface Pressure from Heavy Vehicles
 

Water mains located beneath roads, car parks, or driveways can be damaged by the constant weight and vibration of heavy traffic. Over time, this can lead to cracks or misalignment, especially if the pipe is shallow or aged.

 

Water Main Repair Services in London

Greater London Water has extensive experience dealing with water main emergencies across both residential and commercial sites. When a water main breaks, fast and expert action is critical.
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Our engineers use advanced leak detection tools and trenchless repair techniques to fix the problem with minimal disruption. Where repair is not viable, we offer complete water main replacement using modern, durable materials.

Every repair or replacement is carried out in compliance with UK Water Regulations, ensuring your system is fully certified and fit for long-term use.


24/7 Emergency Water Main Repair

Water main failures don’t wait for a convenient time. Whether it's a slow leak affecting pressure or a sudden burst causing visible flooding, we understand the urgency. You may be notified by Thames Water of a suspected leak, or you might notice water appearing on your driveway, garden, or pavement.

Our rapid-response engineers are available 24 hours a day, ready to diagnose and resolve the issue using non-invasive techniques and state-of-the-art equipment. We act fast to minimise damage, restore service, and keep your property protected.


Contact Greater London Water

When your water main fails, you need experienced specialists who can respond quickly and provide effective, long-lasting solutions. Greater London Water is here to help.

To request a free consultation or receive a quotation for your water main repair, or water main renewal contact the team at Greater London Water. We’ll assess your needs and recommend the best course of action to restore your water supply safely and efficiently. Call us on 0207 1234 996 or email hello@greaterlondonwater.co.uk to schedule a free consultation and learn how we can help with your water main needs.

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