Rainwater harvesting conserves our groundwater ressources


Water is the medium that makes climate change tangible for all of us. There is no water shortage in Germany yet, but groundwater levels are already falling across the country.


Save up to 50 %

On average, each citizen consumes 122 liters of drinking water per day¹). To make a positive change to one’s water footprint, even small steps are enough. With products from GRAF, up to 50 percent of drinking water¹) in private households can be replaced by rainwater.


Rainwater is precious

Plants love rainwater. It is naturally soft and lime-free. This means that laundry washed with rainwater will be fresh and clean whilst using significantly less detergent. You can also save on additional descalers. There is also less scale build-up in the toilet.


Infiltration or retention as a supplement

Often, infiltration or retention of rainwater on the property is a requirement for new buildings. This can be easily implemented with GARANTIA retention tanks or infiltration systems. This is a simple way to meet official requirements and also save on rainwater charges. Incidentally, both options can be easily combined with rainwater harvesting.