Watermains in London: Revolutionising Utility Installations

Watermains Replacement

If you’ve noticed low water pressure, unexpectedly high water bills, discoloured water or strange tastes, it could be a sign of a leak or failing supply pipes and mean it’s time for water supply pipe replacement – especially if your system still uses lead or other outdated materials. These problems are common for both domestic homeowners and small businesses across London. If you’re dealing with these issues, you’re likely searching online for terms like “water line repair” or exploring lead pipe replacement as a long-term solution.

Watermains replacement in London has undergone big changes in recent years, thanks to modern moling and drilling machines. In a city where space is limited and streets are constantly in use, traditional excavation is no longer the most practical solution. Replacing or installing water mains in such a densely populated and historic city calls for smart, low-disruption methods. EPS Trenchless Installations uses modern trenchless “no-dig” solutions. This shift allows for faster, cleaner, and more efficient utility installations, especially in built-up areas

As a water company approved contractor, EPS Trenchless Installations is trusted across London and surrounding areas for domestic and business water infrastructure repair and replacement. Whether you’re dealing with aging pipes or planning a new connection, we provide reliable solutions backed by years of expertise in moling and horizontal directional drilling.

What is Impact Moling?

Impact moling, sometimes referred to as pipe moling or pneumatic moling, is a cutting-edge trenchless technology for installing underground utilities, including water pipes, electric cables, and fibre optic lines. It involves using a device called an impact mole. Occasionally referred as a water mole or pipe mole machine, an impact mole is a pneumatic burrowing device that creates horizontal boreholes through repetitive percussive action. Impact moling is faster and cheaper with the impact moling cost per meter being significantly lower than traditional open cut methods. 

The technique is particularly effective in urban settings, where minimising disruption to roads, footpaths, landscapes, and other infrastructure is important. In more rural areas, moling with its minimal environmental impact preserves the local ecosystems, countryside, and wildlife.

Impact moling is a precise and efficient method that creates a guided tunnel through the soil for laying utilities. It is extremely useful when accessing limited spaces, as the moling equipment typically consists of a compressed air-driven pneumatic cylinder with relatively small entry and exit pits. For those considering impact mole hire, it is better to use experienced professionals who understand the intricacies of this technology.

Benefits of Impact Moling for Water Mains Replacement

Installing or replacing water mains across London’s urban, suburban, and rural areas using traditional trenching methods has always been a difficult task. Impact moling, as part of comprehensive moling services, offers several key advantages: 

Minimal Surface Disruption

The trenchless nature of impact moling preserves surface infrastructure, particularly crucial in London's historic districts and modern urban areas, maintaining the integrity of roads, pavements, and gardens. This makes it an ideal method for domestic water main replacement and pipe replacement projects, ensuring the minimum disruption of homeowners and businesses.

Cost-Effective

Impact moling is a game-changer for water pipe repairs and replacing water supply pipes, slashing costs compared to traditional methods. With less labour and minimal reinstatement work needed, it's a faster, more budget-friendly solution that keeps disruption to a minimum. Moling contractors near me can provide competitive pricing for these services, with favourable installation rates compared to traditional methods.

Time Efficiency

The trenchless installation method of impact moling means quicker installation compared to traditional methods, reducing job timelines and inconvenience to homeowners, residents and businesses. It's especially great for quickly and efficiently replacing water main-to-house connections, with many installations, depending on the pipe length and diameter, being completed within a day

Environmental Preservation

By avoiding extensive excavation, impact moling helps protect London's local ecosystem and reduces the environmental impact of utility installations. Moling is the environmentally friendly solution among no-dig techniques for underground pipe installations, minimizing soil displacement and greatly reducing the carbon footprint of projects.

Moling: How Does it Work?

Impact moling can be used for various underground utility installation projects, including water pipe installation, electrical cable installation, and fibre optic installation. The process begins with excavating small entry and exit pits at the start and end points of the desired pipe route. The moling equipment is then inserted into the entry pit and guided through the soil using horizontal digging techniques for borehole creation.

This method is particularly useful for residential water pipe installations, typically ranging from 750mm to 1350mm below ground level. The pipe diameter that can be installed using moling techniques varies, but it’s generally suitable for smaller to medium-sized pipes. Most domestic water mains will have an 25mm or 32mm MDPE pipe installed. We can install larger pipes – please contact us for details.

If you’re dealing with old lead pipes and low water pressure, a main water pipe replacement is normally the best the solution. Using a moling machine, we can install new pipes without digging up your entire garden or driveway. This method is perfect for upgrading older smaller, iron and lead pipe sizes to modern, safer materials.

Addressing Water Supply Issues

Impact moling is not only useful for new installations but also for addressing existing water supply problems. It can be used in conjunction with leak detection and pipe tracing technologies to find and fix issues such as poor water pressure or water leakage. In the case of repairing leaking pipes, on longer pipe runs, after the leak has been traced, it is sometimes better to bypass the leak with moling, thus ensuring minimal excavation and disruption to the surrounding area. This approach can lead to significant improvement in water quality and water flow.  

Pipe Materials and Sizes

When it comes to water pipe replacement, various materials have been used in London, including iron, black alkathene plastic and lead pipes. All of this older infrastructure is being phased out due to age of the pipes or health concerns and is being replaced with modern blue MDPE plastic pipes. Blue MDPE pipes offer durability and flexibility, making them ideal for use with impact moling techniques.  

Moling vs Directional Drilling

There are two main types of Trenchless Technology – Impact moling or Directional Drilling. So when it comes to installing or replacing underground pipes without digging up your driveway, garden, or car park – which is best for your property or business premises?

Impact moling is ideal for smaller-scale jobs like domestic mains water pipe replacement, electrical cable and fibre-optic cable installations, especially under lawns, driveways, or pathways and can normally be completed within a day.  For long runs of over 30m Horizontal Directional Drilling is the better option especially for larger-scale projects, commercial sites and more complex installs.

Water Mains Replacement in the City of London’s Financial Hub Case Study:

Located near the heart of the financial district, this commercial property in the City of London had experienced reduced water flow due to an outdated cast iron water main. With limited space for excavation and a busy footpath overhead, impact moling offered the least disruptive solution. The job involved drilling under utility-dense ground and ensuring that adjacent services were not affected. Our team completed the 20-meter installation efficiently, leaving the surrounding pedestrian areas undisturbed. The upgraded water main improved supply to the property’s multiple floors, supporting its high-demand plumbing systems.

Conclusion

Impact moling has revolutionised utility installations in London, delivering exceptional efficiency while keeping the cost competitive. The city’s historical significance and varied soil conditions make moling an ideal choice for infrastructure upgrades. From domestic water main repairs and replacements to electric cable and fibre optic installations, the minimal disruption and reasonable price of impact moling make it the go-to of London’s underground development, preserving the city’s character while facilitating modern infrastructure advancement.  

As a water company approved contractor, EPS’s impact moling technology is increasingly being adopted for new underground pipe installation and common supply work throughout the region. This innovative approach to watermains replacement not only addresses immediate water supply problems but also provides a long-term, cost-effective solution for maintaining and upgrading London’s vital water supply pipe infrastructure.  

For those seeking “moling contractors near me,” it’s important to choose experienced professionals who understand the intricacies of this technology and can ensure proper utility ducting and trenchless installation techniques are employed. With the right expertise, impact moling can significantly improve the efficiency and sustainability of underground utility work in London and beyond. 

London History

The City of London traces its origins back to Roman times, when it was known as Londinium. Strategically located along the River Thames, the city became a vital trading hub and an epicentre for commerce and culture. Over the centuries, London has expanded far beyond its original boundaries, becoming a global powerhouse of finance, technology, and tourism. However, its historical growth has also contributed to an ageing underground infrastructure, much of which dates back to the Victorian era. Today, maintaining and upgrading these utilities is a complex task that requires innovation and expertise. 

Geography

London Clay is known for its relatively soft but stable composition, making it suitable for trenchless methods like moling However, care must be taken when navigating through gravelly soils or areas with mixed compositions, as these can affect the stability of the bore path. This is where EPS Trenchless Installationsexpertise in soil analysis and pre-project assessments becomes invaluable. Their advanced knowledge ensures that the correct equipment and techniques are chosen for each specific project. 

EPS Trenchless Installations

As experts in moling, EPS Trenchless Installations provide comprehensive moling services and is the choice for all your underground installation needs be it water mains replacement, gas pipes, new electrical cable for new power points/EV charging points etc or fibre optic cables for tele-communications or CCTV.