In many cases, the water contains mechanical impurities that can be easily removed using mechanical filters. For this purpose, there is a wide range of housings and cartridges that can remove the particles of size from 1 to 500 microns. Housings are made of plastic and stainless steel in sizes from 5 “to 20”. There is also a wide range of cartridges filled with activated carbon, polyphosphate crystals and ion exchange resins.