Find out how rainwater harvesting works

Our video will demonstrate exactly how rainwater harvesting works.

Rainwater harvesting diagram

Rainwater is harvested from the roof and directed to the underground harvesting tank via a filter, this water is suitable for purposes other than drinking so it can be distributed around a household and used for toilets, washing machines, utility rooms and garden irrigation.

The rainwater collected in the harvesting tank is pumped into the system by a submersible pump. When the system reaches maximum pressure, i.e. when all appliances are closed and no flow rate is detected, the pump will stop. If an appliance is opened, the pressure will drop and the pump will start up until maximum pressure is again reached.

In the event that the harvesting tank runs dry, the float switch will drop and activate the mains water backup to ensure a continuous supply of water. During any period where there is no water in the tank, the system is equipped with dry run protection which will automatically switch the pump off to prevent it from burning out. The Tundish acts as an air gap to prevent backflow into the mains water supply, meeting the requirements of BS EN 13076. View case study...