Below Ground Drainage

One range. Endless opportunities.

Our below ground drainage product portfolio includes the UK's largest range of sewer pipes, fittings and chambers for all your Domestic and Residential below ground drainage projects. Whatever the size or scale of your project, we'll help you find the below ground drainage systems you want that deliver the solutions you need.


We provide robust, sewer gas resistant pipes for new and replacement gravity sewer systems - the widest product range for the best solutions possible for your project.


From beginning to end, our below ground drainage systems look after water and waste throughout their journey, whilst making installation faster thanks to their flexibility, strength and easy handling properties.

Polypipe below ground drainage systems are:


  • Adopted by UK water companies under Sewers for Adoption 7 and Sewers for Scotland
  • Kitemarked to BS EN 13476, BE EN 1401 and WIS 4-35-01
  • BBA Approved
  • Pipes manufactured to stiffness classification SN8
  • Frequently Asked Questions

    We recognise that when you're making the decision on which products are better suited for your project, it's only natural to have a series of questions.

  • Inspection Chambers

    Our comprehensive range of inspection chambers gives you options for every non-adoptable and adoptable application. In some cases, one project may use a mixture of both solutions. To get thing

  • All Chambers

    Like all our products, our range of inspection chambers has been built with quality materials engineered to last. What’s more, all of our chambers are pre-benched and easy to cut to length w

  • Deep Inspection Chambers

    The 460mm diameter range of non man entry deep inspection chambers is available for connections into in 110mm, 150mm and 160mm pipework. To stay in line with regulations, our range of non man

  • Chambers for Building Regulations

    All of our systems meet and exceed regulatory standards and come with industry accreditations and approvals. That’s why we’ve developed a range of products to meet the new standards within

  • Chambers for Sewers for Adoption

    According to the new Sewers for Adoption 7th Edition guidelines, lateral drains and sewers that serve two or more properties and connect to the UK public sewerage network are now the responsib

  • Domestic Drainage Systems

    Our comprehensive range of underground drainage products are available in a range of sizes and include all bends, junctions, gullies, chambers, reducers, adaptors and couplers.

  • Adoptable Sewer Systems

    We pride ourselves on providing a solution for every project – and our range of adoptable sewer systems is no exception. Our Polysewer range of pipes and fittings will take installers throug