The quality of surface or underground water usually is not compatible with the standards that are applied to distribution water.

Unwanted elements have to be managed:

Suspended matter, iron, manganese, nitrates, pesticides, sulphates, salinity, pathogen germs, taste or smell...

A range of management processes, including physico-chemical treatments, sand or active carbon filtration, disinfection and remineralization, allow solving the various problems that are met.

Techniques of membrane filtration find a very promising range of application here.