[1] Tech Univ Berlin, Dept Water Qual Control, D-10623 Berlin, Germany
[2] Tech Univ Berlin, Ctr Water Urban Areas, D-10623 Berlin, Germany
[3] Water Resource Management & Environm Modelling, Veolia Environm, F-75008 Paris, France
[4] Berliner Wasserbetriebe, D-10709 Berlin, Germany