The public demand for local stormwater harvesting and management is continually growing due to ever more frequent flood catastrophes. Increasing sealing of areas with buildings, car parks and roads is a particular problem for sewer systems in urban areas and is increasingly raising the risk of flooding. The consequence is flooding with previously unheard of ecological and economic damage.
Additionally, the groundwater level is also sinking due to surface sealing – the natural cycle is broken. ECCUA and GRAF takes this into account with well thought-out infiltration systems. The infiltration modules Rain Bloc and Infiltration Tunnel combine the requirements of an ecologically-sound approach to rainwater with the chance to save sealing fees. Additionally, sewer systems and purification systems get some relief from local amount of rainwater.