Rainwater cisterns mandatory for new-builds

People planning to install a cistern to collect rainwater are now able to calculate the size required in order to meet the demands of their house by logging on to the website groenblauwpeil.be. The water collected in the cistern can be used to flush the toilet, wash the car and water the garden.  It helps to reduce your water bill and saves drinking water that may become scarce in a drought.   Cisterns are now mandatory for all new-builds.