The Mall Sico rainwater storage tank
system enables the disposal of excess rainwater in the soil and groundwater.
Run-off rainwater is filtered and collected in an underground concrete cistern.
The stored water is used as service water in the house or for watering the
garden. Excess water is routed to the surrounding gravel areas and percolates
from there into the ground or into the groundwater (it may be necessary to
inquire about permission requirements).