The Benefits of a Buried Attenuation Tank

Buried attenuation tank, interconnected system to reduce floods

Looking at the current economic and environmental climate, stormwater management and flood control are in many people’s minds. Surface water shall be controlled, knowing that the sewer systems are often overloaded. Collection systems can cause floods, pollution and may not be sustainable on a long term, thus damaging our environment. Additionally, dense urbanization and intensive rainfalls led the municipalities to plan and invest in buried systems.

In urban and suburban areas, water is polluted with hydrocarbons due to oil leaks from vehicles on car parks, in urban streets, on logistic areas or construction sites. Polluted water shall be treated before reaching the aquifers.

Storing and slowly releasing is one of the benefits of the buried attenuation tank, rather than letting water go quickly into sewers or watercourses. 

Buried attenuation tank acts as buffer and decrease the flood risk while allowing municipalities, developers to use the land above as site amenity or to increase biodiversity, thus creating, a better environment for the citizens.

Runoff water that is stored in the buried attenuation tank is polluted with hydrocarbons from car parks, gardens, landscaped areas, driveways, courtyards or communal spaces. The percolation of this polluted water through the TenCate GeoClean® aquatextile laid at the bottom and at the sides of the attenuation basin into a drainage layer makes possible a direct discharge of clean water to the environment. 


The added value of aquatextiles 

Why use our TenCate GeoClean® aquatextile in buried attenuation tanks?

  • Treat water even in case of low permeable soils
  • Possibility to reuse water for irrigation

Installing TenCate GeoClean® aquatextile

Installing TenCate GeoClean® aquatextile in the buried attenuation tank is a time and cost-efficient solution to secure the water depollution 

Case study

Buried attenuation tank below an impervious car park

France, Thouaré-sur-Loire (44)

The creation of a new commercial area with a 120 slots car park, roads for restaurants requires an appropriate stormwater management.