HomeHelp and adviceWater quality



Our network of water mains isn’t made of lead, so there’s virtually no lead in the drinking water that leaves our treatment works. But if you have a lead pipe feeding your property or in your internal plumbing, small amounts of lead may dissolve into your water.

If your house was built after 1970 or has had all its pipework replaced after this time, it’s unlikely to contain lead.

If you’re replacing your lead pipe, we’ll arrange for the replacement of any lead piping that belongs to us free of charge.  

If you’re planning to replace your part of a lead supply pipe within the next three months, please let us know by completing our application form. 

How to check if you have lead pipes  

  • Check the colour of the pipes leading to your inside or outside stop valves. Unpainted lead pipes are a dull grey colour.
  • Look at the joints: Lead joints are rounded and swollen where two pipes meet.
  • Scratch the pipe gently. Scratches on lead pipes will reveal a shiny, silver-coloured metal.
  • Tap the lead pipe with a metal object. Lead makes a dull thud rather than a clear ringing produced by a copper or iron pipe.