Prefiltration as its name suggests is used to filter out the largest particles and in order to protect the ultra-filtration membranes. Sotrad Water uses a number of different filters to achieve this depending on the size of the units.

The smaller units uses simple economical and efficient cartridge filters, sand filtration is used on the larger commercial units and Automatic filters are used on station units processing more than 220,000 litres of safe clean drinking water.

Ultrafiltration is achieved using a mechanical filtration system using microporous membranes that have been used for 20 years. These membranes will filter out anything greater than 0.01 microns in size hence filtering out pollen, algae, parasites, bacteria, viruses, amoebas, cholera etc to produce a perfectly clear, safe drinking water.

Activated charcoal is also used to filter and to remove bad taste and odours and to remove undesirable quantities of minerals as well as any pesticides, toxins that may be present in your water source.