Terrain Underground Drainage

Terrain below ground drainage systems for Commercial Building Services

Using the latest plastics manufacturing technology to satisfy the requirements of today's installers, our below ground drainage range offers both rigid and foam core pipes and a comprehensive range of fittings to suit all applications.


All of our below ground systems are manufactured to the Underground Drainage (EN 1401:1998) and Plastic Inspection Chambers for Drains and Sewers (EN 7158:2001) standards.

Features & Benefits


  • Easy to lay
  • Flexible - accommodates normal ground movement
  • Adaptable - can be connected to existing drainage systems
  • Fully accredited


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Terrain Drainage Price List Feb 2020

pdf (5.24 MB)

Terrain underground (PVC Underground Drainage Systems) TUGTM7 Jan-19

Terrain Underground brochure July 2018
pdf (2.97 MB)