Sewerage in the house.
Sewerage is a constant attribute of not only a well -maintained apartment, but also a country house. For decades (if not centuries) the only substitute for centralized sewage was a simple yard toilet, which is nothing more than a cesspool dug in the ground. A little later, the sewage system for a country house began to be made in the form of a cemented pit, something like a waste receiver. Thus, it was possible to prevent saturation of groundwater drains.