1. Div. of Architecture and Infrastructure, Luleå Univ. of Technology, S-971 87 Luleå, Sweden (corresponding author).
2. Div. of Architecture and Infrastructure, Luleå Univ. of Technology, S-971 87 Luleå, Sweden.
3. Div. of Architecture and Infrastructure, Luleå Univ. of Technology, S-971 87 Luleå, Sweden; and Urban Water Management AB, Chalmers Teknikpark, S-412 88 Göteborg, Sweden.