• Foul Drainage & Surface Water Drainage Infrastructure

    WCI are expert drainage engineers and design, supply and install all forms of foul- and surface- water drainage.

WCI designs, supplies and installs all forms of drainage, ensuring that it functions correctly without blockage and is compliant with building regulations. Drainage is generally divided into foul drainage, which deals with used or dirty water from any house or process and surface water, which deals with water that is drained from the ground, pavement or a roof. Ground water is water contained within or arising from the ground.

Foul Drainage

Foul drainage, which conveys sewage, grey water or dirty water, is generally divided between gravity drains and pumped drains or rising mains.

Sewers are foul drains which serve more than one property, many of which are owned and maintained by a water authority although private sewers also exist. Lateral foul drains are generally defined as the pipe connecting a single house or structure to the shared sewer. Lateral drains are often considered the part of a drain that lies outside of a property’s boundary. These pipes were previously the responsibility of the owners of the property but were adopted by the Water Authorities on 1st October 2011. As such, ‘drains’ are now considered to mean the pipes within a property’s boundary which are the responsibility of the owner of the property and lateral drains are the pipes which connect a single property with a shared sewer.

The specification and installation of foul drains is subject to building regulations and must be correctly sized for the expected flows and must be laid at correct gradients to prevent blockages. Access points (rodding points, inspection chambers and manholes) must also be provided.

WCI can assist with the design of appropriate surface water drainage schemes for new developments. See our Lower Coltscombe case study for an example of our work.

Whatever the issue, WCI can assist with improving land drainage, protecting your house with French drains or installing a pump station to move collected surface water away from the house. See our Park House Farm case study for an example of our work.

Case Studies

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