At the present time, one of the major difficulties in all countries of the world is the quality of water used. From it, we can say life depends rights, because without water we can not long exist. The quality factor of the water, is equally affecting human health. From the water with poor quality, within a year worldwide die 9 million people. At the microbes present in the water, writing off the majority of chronic diseases. In various types of polluting components of the natural person adds to the water Cl - disinfector and simultaneously, a toxic substance. So - should use water filters. Water is used in virtually all areas of human activity: cooking, on the farm, in factories, mills and so on. Purification of water for drinking can significantly increase the quality of life and to positively impact health, because for a long time everybody knows that the human body is 80% of the water. Originally drinking water should be clear from the abundance of iron, manganese and hydrogen sulfide, which gives the water a brown color and repulsive odor. Equally noteworthy industrial water treatment and water supply systems for residential buildings. Water purification in this case is obliged to guarantee uninterrupted production process, and poor-quality water treatment can disrupt production, leading to loss or damage expensive equipment. Industrial water treatment is needed in the food industry, pharmaceutical industry and in other areas of production. Water treatment is based on the use of a number of filters that form an integrated system of water purification. Currently extremely popular are the filters on coal-based, but the modern water treatment involves the use of high-tech innovations, such as: reverse osmosis, biological treatment of water or water treatment with synthetic technology. In today's market there are many different companies that are engaged in manufacturing and installation of water purification equipment. So no need to rush to the choice. It should apply only to reliable and well-established organization, which employs highly qualified specialists with modern developments.