maximum cleaning performance;
Ease of use of autonomous sewage in a private house.
As for the economy class, small local systems fall here, which are based on septic tank t. e. sewer systems for cottages, characterized by simplicity of design and at a slight price. However, such attitudes are characterized by a number of disadvantages, which often stop the owner of the cottage. We can say that septic tanks for cottages are harmful to the environment.
