With rainwater you can shower and wash yourself perfectly. Rainwater is soft and therefore wonderful for your skin, much nicer than the hard drinking water. Moreover, you will never again have lime deposits in your bathroom.
To make the rainwater suitable, it is purified by a membrane and a UVC unit. After collection in the tank, the rainwater is transported inside with a submersible pump. There are two or three tanks in your house. In the first one, a membrane station is installed. There the rainwater is purified. The second (and third) tank contains the clean rainwater. The rainwater station uses this water to transport it to all consumer appliances, such as the shower, taps, washing machine and toilets. An UVC unit has been placed next to the rainwater station. This provides a double purification of the rainwater.