Your water company usually replaces its own lead communication pipe for free; the private supply pipe into your home is the part you pay for, typically £1,500–£4,000. Here is what drives the cost and how to keep it down.
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A lead supply pipe is split into two parts at your property boundary. The communication pipe — from the water main to the boundary — belongs to your water company, and under the Water Industry Act they will normally replace their lead section free of charge, especially if you are replacing your own part at the same time. The private supply pipe — from the boundary into your home — and the internal plumbing are the homeowner’s responsibility. Most of the cost you will pay is for that private section.
As a general guide, replacing a private lead supply pipe in the UK typically costs somewhere between £1,500 and £4,000. The figure depends heavily on how far the pipe runs, what is on top of it, and how it is installed:
Replacing short internal lead runs (for example, the pipe from the stop tap to the kitchen tap) is usually cheaper, in the region of £300 to £1,000 per run plus any plastering or decorating to make good.
Many UK water companies run lead pipe replacement or subsidy schemes, particularly where they are already replacing their own communication pipe in your street, or where a young child or pregnant resident is affected. Terms vary widely, so it is worth contacting your water company directly before you commission any work — coordinating with their communication-pipe replacement is usually the cheapest route. Enter your postcode above to see which company supplies your area.
Full replacement is the only permanent fix — filters and morning flushing reduce exposure but do not remove the source. If you are already having groundwork, a driveway or a kitchen done, replacing the supply pipe at the same time is far cheaper than doing it as a standalone job. For homes with young children or expecting parents, many people choose to prioritise it. To judge your own likelihood first, use the lead pipe risk checker and our guide to checking whether your house has lead pipes.
Cost ranges are general UK estimates for guidance only and vary by property, region and contractor. Always get written quotes and check your water company’s current scheme.
Replacing a private lead supply pipe typically costs between £1,500 and £4,000, depending on the length of the run, whether it passes under a driveway or garden, and how much reinstatement is needed afterwards. Short internal lead runs are cheaper, around £300 to £1,000. These are general estimates — always get written quotes.
Your water company is responsible for the communication pipe from the main to your boundary and will normally replace its lead section free of charge, particularly if you are replacing your private section at the same time. Many companies also run subsidised or free schemes for the private supply pipe in certain circumstances. Contact them before commissioning work.
The pipe is split at the property boundary. The communication pipe (main to boundary) is the water company's responsibility. The supply pipe (boundary into the home) and all internal plumbing are the homeowner's responsibility.
Yes. If you are already having a driveway, garden or kitchen done, replacing the supply pipe at the same time avoids paying twice for excavation and reinstatement, which is usually the biggest part of the bill.
A filter certified to NSF/ANSI 53 and flushing the tap each morning reduce exposure but do not remove the source. Full pipe replacement is the only permanent fix. Many households with young children choose to prioritise replacement.