Translations:Regenwassernutzung/207/en
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Yield = Requirement
If the rainwater yield covers the non-potable water requirement, then an easy dimensioning value of 5% of the average yearly rainwater yield is reliable. In the image attention must be paid to the non-used portion of the tank (e.g. 300 litres in a 3000 litre tank) found between the tank bottom and the suction inlet.
