Using so-called "greywater" is one of many examples of innovative sanitary technology from WeberHaus. The idea is to use your bath and shower water a second time, helping make your self build home more energy efficient.

This is how it works:

Your shower and bathwater is conducted to a small cleaning plant, since the separation of drinking water and separated water must be ensured - as is the case when using rainwater. New technology cleans the water in four steps:

1. A first filter performs basic pre-cleaning.

2. Biocultures condition the water.

3. The sediments from this step are removed.

4. UV radiation kills the bacteria.

The whole process is entirely odour-free. The sediments are automatically conveyed to the sewage canal. Clogging of the filters is impossible, since a self-cleaning function rinses the filters as required.