Attenuation tank
Underground tank temporarily storing surface water to reduce peak flows into the sewer.
We provide fast, reliable drainage and plumbing services 24/7.
Underground tank temporarily storing surface water to reduce peak flows into the sewer.
Slope of a drain pipe expressed as the vertical drop per horizontal metre length.
Highway drainage point with a kerb inlet collecting surface water from roads into sewers.
Long surface drainage channel with grating used across driveways and patios.
Lowest internal level of the inside of a drainage pipe used as a reference height.
Gully fitted with a water seal trap to prevent drain odours rising to the surface.
Sealed cap fitted to the end of a drainage channel or pipe to prevent flow escape.
Large access chamber over a drain or sewer allowing entry for inspection and maintenance.
Gully with a side inlet allowing waste pipes to connect below grating level.
Long radius pipe bend allowing flows to change direction without significant turbulence.
Greater London Drainage is a family-run company providing professional drainage and plumbing services across Greater London.
