RA Government and World Bank co-financed project on Yeghegnadzor community nor Avan district sewerage system and bio-treatment plant construction, implemented by “Armenian Territorial Development Fund” is about to end. Sewerage flowing from the settlements will be filled to six bio-treatment modules 182m³ each, mounted in the plant. It will be treated and filtrated, ensuring clean water flow. The treatment plant is meant for 1000 residents. In parallel with resident’s growth rate, the bio-treatment plant is possible to be accomplished with one module too, that will supply treatment of 273m³ wastewater. A six-meter-long new sewerage line was laid within the scope of project before the treatment plants mounting.