Water Mains Replacement Southampton - We Install, Replace & Repair Mains Water Supply Pipes

Specialists in replacing and installing water mains over 25 meters in length

Replacing or repairing old, leaking or water mains pipes in and around your property may feel like a scary thought, you may think it will be a huge time consuming, costly job and not know where to start. Luckily for you ADI Leak Detection offers hassle free, cost effective solutions to these problems. Using a range of state of the art equipment and extensive knowledge we are able to assess every situation and offer solutions that best suit you, your home and your budget.

Water Mains Replacement Techniques

There are 3 water main replacement techniques used today including trenching.

Here at ADI Leak Detection in Southampton, we are specialists in long distance water mains replacement and installation.

We use Horizontal Directional Drilling & Moling. Each of these techniques have their own benefits and disadvantages for pipe replacement or installation.

The method we choose to use depends on different factors and challenges faced at each individual job.

We will take into account the length of pipe that needs to be replaced, the type of soil it is in, the cost of remedial works and the level of access there is to the site.

Horizontal Directional Drilling

Horizontal Directional Drilling or HDD is the latest technique used to install or replace underground water main pipes. Our experienced engineers access the area using ground penetrating radar and plan a path underground avoiding any obstacles then drill a small pilot hole. Using sonde we will track the progress of the drill head to ensure it is going in the correct direction and at the right depth. Once the drill reaches the finishing point the new mains water pipe is attached and the process is reversed and the new water pipe is pulled back through the pilot hole. This is a great option for water mains that need to be replaced and are over 20 meters in length, perfect for already landscaped areas as there is very little disruption to the land and we are able to fit up to 100 meters of new water pipe in a single day!


Moling is the most cost effective way to lay a new water pipes or for water pipe replacement of less than 25 meters. Firstly, one of our engineers will dig an entry hole and exit hole in the ground to the required depth. Then a specialist piece of machinery called an impact mole, powered by a pneumatic drill will force its way to the exit hole creating a pathway in its wake. Once the mole reaches the exit hole we attach the new water mains pipe to the mole and pull it back through the newly created pathway. As only two holes need to be dug for this process your property can easily be put back to how it was originally found and often you can’t even see that work has even taken place. This is a much less disruptive method than physically digging trenches for the new pipe to be laid.


Trenching is a highly disruptive process for fitting a new water mains pipe. It involves using machinery to dig a long narrow trench the entire length of the new pipe that needs to be fitted. As you can imagine this can be a time consuming, messy process and the destruction left behind can be high. This process is best suited for areas that have yet to be landscaped, such as new build properties that are unfinished and are able to be out of action for a longer period of time.

Domestic & Commercial Water Mains Replacement & Installation Specialists

At ADI Leak Detection our complete range of water mains replacement services and equipment are available to both domestic and commercial customers throughout Southampton, Hampshire. Taking advantage of our non disruptive methods such as Horizontal Directional Drilling and moling we are able to allow commercial customers top keep their premises open while we carry out the work as only a few small holes need to be dug.

Contact Us Today For Water Supply Pipe Replacement Services In Southampton, Hampshire

If you are in need of a new water supply pipe and are worried where to start, give our friendly team a call at ADI Leak Detection, where we will be happy to advise the best course of action and offer a free quotation today!

Water Mains Replacement FAQs

How much does it cost to replace a water main?

The cost of replacing a water main pipe varies widely depending on a few factors such as, the length of pipe that needs to be replaced, the type of soil in the area, the depth the new pipe needs to be laid at and of course any complications such as underground obstructions and the type pf method you opt for. On average the cost of replacing an old mains water pipe cna range from £1500 to £10,000 or more.
Yes, not only are we at ADI Leak Detection a mains specialist but we are also able to locate the source of a leak we are also able to replace and repair burst water mains. We will always aim to repair a stretch of burst water mains but if there are many leaks occurring on the same pipe sometimes it’s best to replace the whole pipe rather than carry out a water main repair to avoid bigger issues later on.

The lead water mains replacement grant offers help to homeowners who want to replace lead water mains pipes that supply drinking water to alternative safer pipes such as copper or plastic.

The grant covers 50% of the cost of replacing the old lead water mains pipes up to a maximum of £1000. All homeowners in Southampton and the Hampshire who have lead pipes supplying their drinking water are eligible for the grant.

Homeowners must apply for the grant through their water supplier and provide evidence that there are lead pipes supplying their property, upon which a lead replacement grant will be given.

The work must be carried out by approved contractors who are registered with the local water board. ADI Leak Detection is an approved contractor with all UK water companies.

Once the work has taken place homeowners should submit documentation to the water supplier including invoices and evidence of payment then the water supplier will reimburse the homeowner with the required grant amount.

Mains Water Supply Pipe Repair Services

We are able to carry out plumbing repairs to supply pipes and underground drain lines. In the instance that the pipe is unable to be repaired then we are able to provide a written quote for replacement moling service or directional drilling replacement service.

How Can ADI Leak Detection Help With Water Mains?

Leak Detection, Supply Pipe Repair, Complete Replacements and new installations – whatever you need regarding water mains in Southampton. No job is too big or too small when it comes to water mains, whether it’s a small leak that’s causing you grief or a huge one causing extreme damage to your property our local ADI Leak Detection engineers in and around Southampton are on hand to help, locate the source of the leak and repair or replace the affected pipes in the very same day!

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