The composition of a rainwater system is actually quite simple. The rainwater flows down from the roof via a rainwater pipe and is led to the rainwater tank via an underground pipe. This tank can be made of concrete or plastic, usually has a capacity of approximately 5,000 litres and is preferably placed underground. A filter with a non-return valve is installed in the tank. It removes the impurities that flow along. The excess rainwater is led outside of the tank via a siphon. This overflow can be connected to the sewer, to surface water or to an infiltration facility.
The filtered water flows into the tank via a gentle inlet. It is then transported indoors by a suction system. Inside your home or business there is a rainwater station that transports the rainwater to the consuming appliances. This rainwater station is equipped with a pump, control unit and drinking water replenishment. If the level in the tank is too low, the rainwater station automatically switches to drinking water. A float in the tank ensures the signalling.
Rainwater system for commercial and non-residential buildings
The system works basically the same for companies and commercial buildings. The system is only larger in terms of storage, filtering and pumping capacity.
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