Engineered from durable PVCu and available in 150mm to 375mm diameters, Polysewer combines long-term performance with lightweight handling for faster, safer installation. Fully compliant with industry standards and backed by over 100 years of design life, it’s trusted by contractors and water authorities across the UK for adoptable sewer networks and infrastructure projects.
Robust structured wall pipes for new and replacement gravity sewer systems
The Trusted Choice For Adoptable Sewer Systems
We offer the UK's largest range of sewer systems, combining unrivalled expertise in engineered thermoplastics with the ability to deliver high quality on the scale required by major projects.
Lightweight yet exceptionally durable, Polysewer is the preferred choice across the UK for adoptable applications. It delivers reliable performance without compromise and is fully compliant with the stringent standards set by UK water authorities.
- Fully compliant with WIS 4-35-01 and BS EN 13476
- BSI Kitemark and BBA approved
- Meets WRc Code of Practice for high-pressure water-jetting tolerance
- Fully adoptable by water companies
- Manufactured to stiffness classification SN8
Setting A New Standard In Sewer Innovation
Plastic piping systems offer a cost-effective, environmentally friendly, and highly adaptable solution for modern infrastructure. Lightweight yet robust, they simplify transport and installation while delivering long-term strength and durability. With enhanced flexibility and resistance to corrosion, plastic pipes meet the demands of today’s drainage and sewerage projects.
- 94% Lighter Than rigid alternatives making plastic pipes easier to handle on site, reducing the amount of machinery and labour required for installation.
- 74% Fewer Leaks Results from TEPPFA SMP Project concluded plastic pipe systems have shown 74% fewer leaks than pipe made from more rigid materials.
- 100% Recyclable at end of life Designed with sustainability in mind, Polysewer can be fully recycled at the end of its service life, supporting circular construction practices.
- 100 year Design Life Polysewer offers a durable, high-performance solution and delivers long-term reliability and peace of mind
The Largest Range Just Got Even Bigger
The new 375mm diameter Polysewer, along with its comprehensive range of fittings and accessories, perfectly complements our existing range, offering even more versatility and options for your sewer infrastructure needs.
The first and only 375mm twin-wall structured sewer pipe on the UK market, the new diameter ensures superior flow rates, making it ideal for managing substantial volumes of wastewater.
Sewer Sector Guidance Explained
Looking For A Larger Diameter?
Ridgisewer complements the Polysewer range by offering robust, structured twin wall pipes in diameters above 400mm, ideal for projects requiring greater capacity. Together, they provide a complete solution for gravity sewer applications, from standard installations to large-scale infrastructure.
Frequently Asked Questions
Yes. Polysewer is manufactured in accordance with BS EN 13476-3 and WIS 4-35-01, making it fully compliant with Sewerage Sector Guidance for England, Sewers for Scotland, and Welsh Minister Standards for Sewers.
Yes. Polysewer (PVCu, 150–375mm) and Ridgisewer (PP, 400–900mm) are part of Polypipe’s structured wall sewer offering and are designed to work together. A full range of adapters, couplers, seals, and junctions are available to ensure compatibility between systems.
We provide technical guidance and standard details to help specifiers and contractors match stiffness classes and ensure compliant installations. Our Technical Hub includes datasheets and connection diagrams for mixed-material systems.
