We offer efficient and well-established solutions, such as underground retention facilities with Rigofill inspect. These help to locally collect the accumulating stormwater and infiltrate it in a controlled manner. The highly durable universal tank installed underground takes in large water quantities and stores these before returning them to nature in a delicate, time-lagged manner. In case of rain – be it precipitation typical of the season or sudden heavy rainfall – the underground storage capacities also relieve the sewer network and, in doing this, prevent flooding.