Sewerage sector consists of rainwater, municipal and industrial networks. Municipal networks work independently, and go into the city sewer. Storm sewer: from internal drainage of buildings and from storm-water inlets water is drained into a ravine at a distance of 400 m from the plant via closed network of pipes. Industrial wastes are coming to the neutralization station, and after processing they are sent partly to municipal sewage, partially collected in the three settler of 20 m3 and are subject to recycling.