Why did we mention the importance of a laboratory study of water from a well at the very beginning? Then, in order to correctly decide on the type of filter used, since the excess of iron concentration of 5 mg/l indicates the need for reagent outrageous. This is a radical method, which involves the use of active chemicals aimed at maximum iron removal of their water as a filter. But there is one important “but” here: the filter system must be connected to the centralized sewer system, since unsafe chemicals are washed off in the process of work there. In addition, the loading of the load is carried out not by ordinary water, but by a special solution.