1. Scientific Researcher, KWR Watercycle Research Institute, 3433 PE, Nieuwegein, Netherlands (corresponding author).
2. Principal Scientist, KWR Watercycle Research Institute, 3433 PE, Nieuwegein, Netherlands.
3. Principal Scientist, KWR Watercycle Research Institute, 3433 PE, Nieuwegein, Netherlands; Sub-Dept. of Environmental Technology, Wageningen Univ., 6708 PB, Wageningen, Netherlands.
4. Advisor, WML, 6201 BB, Maastricht, Netherlands.
5. Team Leader, Waternet, 1096 AC, Amsterdam, Netherlands.
6. Executive Officer, Waternet, 1096 AC, Amsterdam, Netherlands; Professor, Faculty Civil Engineering and Geosciences, Delft Univ. of Technology, 2628 CD, Delft, Netherlands.