The demand for water has started in some areas to outstrip supply for large parts of the year. Water is a valuable resource that needs to be conserved for a sustainable future. Rainwater harvesting or rainwater recycling can help to alleviate the problems with water supply and save money by reducing mains water usage.

Rainwater harvesting is a system whereby the rain that falls onto a property is collected and stored for non-potable applications such as toilet cisterns, washing machines, vehicle washing and garden taps.

Rainwater harvesting can help alleviate flooding problems as the water is kept out of the storm-water management system plus these systems help with the in scoring regarding the Code for Sustainable Homes.