Translations:Regenwassernutzung/130/en

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According to the European Drinking Water Directive <ref name="Europäische Trinkwasserverordnung">European Drinking Water Directive</ref> water in households, which is not used for drinking or bodily hygiene, can be replaced with so-called non-potable water. This non-potable water can be relatively easily collected from roof runoff water. Roof runoff is rainwater that has come from roof surfaces. At minimum non-potable water can be used for toilet flushing, laundry washing or for irrigation purposes. In this way a savings-conscious household can save up to 50 L of drinking water per person every day. Considering the usage in Germany, this constitutes around 50% of the total usage.