In the MORPHEUS project three Swedish Wastewater Treatment Plants (WWTPs) were investigated for their release of pharmaceuticals into the recipient. One of these was Degeberga WWTP which discharges its treated wastewater into the Segesholmsån river, ending in the Baltic Sea. Segesholmsån river has a length of 23 km and an average flow of roughly 0.6 m3/s (Figure 1).