In order to have clean water available it is an advantage that an appropriate purifying filter is installed.There are various types of filters, for example single filters, backwash water filters. In order to extinct germs which are toxic to the human organism such as coliform bacteria, Escherichia coli and enterococci, which are intestinal bacteria originating from human and animal excrements either chlorine, heat or UV-radiation has to be applied. For the application of UV radiation pure and clean water is a prerequisite. If this is not the case, the UV translucence doesn´t exist.

When installing a filter attention should be paid to its certification in order to secure the required quality of the filter.