Such a station pays off for several years after its installation, it is not demanding in operation and for its use do not need to connect to city wastewater disposal networks. Residents of country houses that have already established such systems note that they began to feel much better, the reason for this they most often call the environmental friendliness of such systems. Indeed, in the process of processing sewage sewage, no unpleasant odors are distinguished, which can not be said about ordinary sewage, and they do not have to breathe in pairs of rot and rotten. The only components of them at the exit from the system are purified water and silt, and the hostesses immediately find the use of both the second component. They use water for the arrangement and watering of the garden, and silt — for its top dressing.