1. Entidade Reguladora dos Serviços de Águas e Resíduos/The Water and Waste Services Regulation Authority, Lisbon School of Economics and Management, Universidade de Lisboa, Lisbon 1200-781, Portugal.
2. Assistant Professor, Civil Engineering, Research and Innovation for Sustainability, Instituto Superior Técnico, Universidade de Lisboa, Lisbon 1049-001, Portugal (corresponding author).
3. Assistant Professor, CGS/Advance—ISEG—Lisbon School of Economics and Management, Universidade de Lisboa, Lisbon 1200-781, Portugal.