Water is becoming an increasingly precious natural resource with each person in the UK using 150 litres of water a day. Above ground rainwater harvesting systems for the urban ‘built up’ environment are a new innovation in the UK but are widely used in other countries. These state-of-the-art modular systems are an attractive, practical and contemporary solution to managing water resources and blend seamlessly with modern and traditional building designs. Urban systems that offer a modular tank design enable flexible sizing of the water storage capacity.
A rain water harvesting system comprises of a filter, storage tank, pump and mains valve that is connected to utilities and appliances to use rainwater for toilet flushing, laundry and garden irrigation. Rain falling on the roof of a building is channelled via the existing gutters and down pipe to a filter which removes leaf litter and other debris before diverting the water into a storage tank. When an appliance demands water a pump is automatically switched on and draws water from the tank. In the event that the tank runs dry a mains water valve is automatically activated to partly refill the tank