Lead Pipe Replacement London — Expert Lead Water Pipe Specialists

Looking for New Water Supply Connection in London?

JD Leak Detection are London's dedicated lead pipe replacement specialists. We replace lead water supply pipes across all London boroughs, using modern MDPE pipework and trenchless moling technology to complete most jobs in a single day with minimal disruption to your property.

If your home was built before 1970, there is a significant chance your water supply pipe is still made of lead. Lead is a toxic metal — even low-level exposure over time carries serious health risks. Replacing your lead pipe protects your family's health, improves your water pressure, and increases your property's value.

Why You Need to Replace Your Lead Water Pipe

Health risks: Lead can leach into drinking water, especially in London's soft water areas. The World Health Organisation states there is no safe level of lead exposure. Children and pregnant women are particularly vulnerable — lead exposure has been linked to developmental delays, kidney damage and nervous system disorders.

Water quality: Even if lead levels are currently within regulation limits, those limits are tightening. Replacing your lead pipe guarantees safe, clean drinking water and brings your property fully into compliance with the Water Supply (Water Quality) Regulations 2016.

Water pressure: Old lead pipes narrow and corrode over time, reducing water flow. Replacing with modern 25mm or 32mm MDPE pipework typically delivers a significant improvement in pressure throughout your property.

Property value: Buyers and mortgage lenders are increasingly aware of lead pipework. Replacing your lead pipe is a tangible improvement that makes your property more saleable and can affect mortgage valuations.

Our Lead Pipe Replacement Process

1. Initial survey — we inspect your current supply pipe, confirm it's lead, check whether you're on a shared or separate supply, and plan the optimal installation route.
2. Thames Water application — if you qualify, we'll help you apply for the Lead Pipe Replacement Scheme so Thames Water replace the public section (communication pipe) at no cost to you.
3. Trenchless moling — where possible, we use impact moling to install your new MDPE supply pipe underground with just two small excavation pits, avoiding disruption to driveways, paths and gardens.
4. Connection and testing — we make all connections to your internal stop valve and test the new supply thoroughly before completing the job.
5. Certification — as WaterSafe approved contractors, we issue a Certificate of Works Completed, which is required for Thames Water sign-off and accepted without an open-trench inspection.

Thames Water Lead Pipe Replacement Scheme

Thames Water offers a free replacement of the communication pipe (the section from the water main to your boundary stop valve) when you replace your private supply pipe. To qualify, your property must have been built before 1970, you must suspect lead pipework, and you must plan to carry out the replacement within 3 months of applying.

We manage the full application process on your behalf, coordinate with Thames Water's teams, and ensure both sections are replaced in the same visit wherever possible to minimise disruption.

Lead Pipe Replacement: Trenchless Moling vs Excavation

Most of our lead pipe replacements use impact moling — a trenchless technique that drives the new pipe underground between two small pits. This approach means:

• No digging up your driveway, path, or garden
• Faster completion — most jobs done in one day
• Lower reinstatement costs — no expensive paving or landscaping repairs
• Less disruption to you, your household and your neighbours

Where moling isn't possible due to pipe bends, obstructions or very short runs, we use careful open-cut excavation with full surface reinstatement.

Lead Pipe Replacement Costs in London

Most residential lead pipe replacements in London cost between £800 and £2,500. The price depends on:

• Length of the pipe run from the boundary to your internal stop valve
• Access conditions — clear garden vs driveway, pathways or landscaping
• Whether moling or open-cut excavation is needed
• Whether the pipe is on a separate or shared supply
• Any reinstatement required

We provide free, no-obligation fixed-price quotations after a site survey. There are no hidden costs or day-rate surprises.