The purpose of the construction was building a new sewerage system in the town district of Žacléř - Červená kolonie so that selected properties in the area of interest could be drainaged. Another objective was the readjustment of the existing insufficient rain separators "U tenisových kurtů" and "U hřbitova" into vortex separators, reconstruction of the "Na pilíři" separator and utilization of the facilities within the compound of former water treatment plant "Pod zahradami" to rainwater basins. The construction resulted in the improvement of the environment in the municipality and improvement of parameters of drainage to the water treatment plant, where the excessive waste of sufficient quality is lead directly to the water body.