The rehabilitation of water supply pipelines in the zone of construction of the Skrad public sewer system and construction of the Skrad public sewer system includes the construction of a sewer system of the Skrad agglomeration through the construction of sanitary sewers in the length of 3,580 m, 964 m of pressure lines with four supporting pumping stations, and rehabilitation of 1,616 m of water supply pipelines with supporting shafts and fittings; the preparation of implementation designs, as-built survey, as-built reports and supporting documents required for the performance of works and issuance of Use Permits.