Lead pipes and drinking water
Can a home survey see the buried pipe between the house and the water main?
Usually no. The communication and supply pipes are underground. The surveyor sees pipes that are exposed inside or at the point of entry, if they are not boxed in. The Drinking Water Inspectorate still says to ask the surveyor to note the nature of pipes they can see, with lead specially in mind. Invisible pipe is not a pass.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
A stopcock under the sink and a rising main in a cupboard are the usual clues. Lead looks dull grey and is soft compared with copper, but paint, foam lagging and a tiled box defeat that. The survey should say “not visible” rather than “no lead”. Those sentences are not the same.
The water company’s test at the kitchen tap is how dissolved lead is found, whoever owns the buried length. Ownership of the pipe, and who pays to replace which part, is a question for the company and your solicitor. The survey does not map the pavement. No length and no price are stated here.
What should you ask your surveyor?
- Which pipes were visible on the day?
- Did lagging or boxing stop you seeing the incoming main?
- Are you writing “no lead seen” or “incoming pipe not inspected”?
What are the typical next steps?
- Read the limitations. “Not inspected” is a gap.
- If lead matters to you, ask the water company to test, because the buried pipe was not seen.
- Do not dig the front path up before exchange to settle a suspicion.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
Is a new kitchen proof the supply was replaced?
No. Fitters often connect to the old rising main. A new tap is not a new pipe to the main.
Can the surveyor lift the pavement?
No. That is not a home survey, and it may not be your pavement to open.