01
Inspect and trace
Confirm the pipe material, route, stop valves and supply arrangement.
South East London Estimate in about 3 minutes
Lead pipe replacement in South East London
Lead pipe replacement made simple. Get an instant estimate.
Get a clear lead water supply replacement budget based on the route, surfaces and access at your property. You see the estimate before we ask for your contact details.
No obligation
Trenchless moling where suitable
New MDPE private supply pipe
Pressure testing and reinstatement
Clear written scope before work
Your replacement route
Surveyed. Planned. Reinstated.
Boundary valve
New MDPE supply
Internal stop tap
TraceReplaceTest
Route checkedBefore final price
Tidy finishReinstatement agreed
Approved contractorQualifying lead-pipe workSafeContractorApproved business
Contractor of the YearHousing 21 · 2025
Fast responseWe aim to reply within 2 hours
A clear route from survey to reinstatement
Professional delivery without the usual uncertainty.
We confirm the route, select the least disruptive suitable method and agree the reinstatement before work starts.
02
Plan the method
Use trenchless moling where suitable or controlled excavation where needed.
03
Replace and connect
Install the new MDPE supply and reconnect to the internal stop tap.
04
Test and reinstate
Pressure test, complete agreed making good and hand over the work.
Why replace the old supply?
A safer, more reliable route into your property.
Replacing the private lead supply removes an avoidable risk and gives you modern pipework designed for long-term service.
Remove the lead supply route
Replace ageing lead pipework on your property with a modern MDPE private supply.
Support better flow
A correctly sized replacement can help where the old pipe is restricted or deteriorated.
Limit disruption
Moling can reduce open excavation across gardens and driveways when the route allows it.
Control cost and risk
Get the route, exclusions, reinstatement and written price confirmed before work begins.
Approved contractorFor qualifying lead-pipe workKnow where responsibility changes
Your pipe. Their pipe. One coordinated plan.
This estimator focuses on the private supply pipe you are normally responsible for. We also help you understand the Thames Water process at the boundary.
Your responsibility
Outside stop valve to internal stop tap
Private supply pipe and internal pipework, including shared sections where applicable.
Thames Water responsibility
Water main to outside stop valve
The communication pipe is normally owned and maintained by Thames Water.
View the replacement schemeLocal lead pipe specialists
Lead pipe replacement across South East London.
Intersmooth provides lead water supply surveys, trenchless moling where suitable, new MDPE pipework and agreed reinstatement for homeowners, landlords and property managers.
If your property is near one of the areas listed, complete the estimator and we will confirm coverage from your postcode.
Chislehurst
BR7
Bromley
BR1 & BR2
Orpington
BR5 & BR6
Petts Wood
BR5
Beckenham
BR3
Sidcup
DA14 & DA15
Bexley
DA5 & DA6
Eltham
SE9
Greenwich
SE10 & SE18
Lewisham
SE6 & SE13
Lead pipe replacement questions
What homeowners need to know before replacing a lead supply.
Straight answers about cost, access, moling, timescales, shared supplies and where Thames Water responsibility begins.
How much does lead pipe replacement cost?
The cost depends on the route length, surfaces, access, shared supplies and internal connections. The estimator gives you an initial budget range before we confirm the route and issue a written quotation.
Can you replace a lead pipe without digging up the whole garden?
Often, yes. Trenchless moling can reduce open excavation where the route, ground conditions and hidden services allow it. Small access excavations are still normally required at each end.
How long does a lead pipe replacement take?
Many straightforward private-supply replacements take around one to two working days. Longer routes, shared supplies, restricted access and extensive reinstatement can take longer.
Which section of the water pipe is my responsibility?
The private supply pipe from the outside stop valve to the internal stop tap is normally the property owner's responsibility. Thames Water usually owns the communication pipe between the water main and the outside stop valve.
Can a shared lead water supply be separated?
It may be possible, but the route, neighbouring properties, boundary connection and Thames Water requirements must be checked before the scope and price can be confirmed.
Is the online estimate a fixed quotation?
No. It is an initial budget based on your answers. We confirm access, pipe ownership, hidden services, the installation method and reinstatement before issuing a final quotation.
Free online estimate
Find out what your lead-pipe replacement is likely to cost.
No obligation. Price shown before contact details.