Fig. 2. Pattern of rainfall, natural discharge of the Zwester Ohm, and human effluents consisting of the discharges of the two wastewater treatment plants, 14 combined sewer overflows, and four combined sewer overflow tanks.
Fig. 2. Pattern of rainfall, natural discharge of the Zwester Ohm, and human effluents consisting of the discharges of the two wastewater treatment plants, 14 combined sewer overflows, and four combined sewer overflow tanks.