[1] Berlin Ctr. of Competence for Water, Cicerostr, 24, D-10709 Berlin, Germany
[2] Department of Water Re-use, United Water International Pty Ltd, Hope Valley WTP, PO Box 690, Modbury, SA 5092, Australia
[3] Department of Hydrology, Humboldt-University Berlin, Chausseestrabe 86, D-10115 Berlin, Germany
[4] R and D Department, Berlin Water Company (Bwb), Cicerostr, 14, D-10709 Berlin, Germany