Companhia de Saneamento Basico do Estado de Sao Paulo
Companhia de Saneamento do Parana
Companhia Estadual De Aguas E Esgotos
Essential Utilities Inc
Beijing Enterprises Water Group Ltd
Beijing Capital Water
American States Water Company
California Water Service Group
Suez Environnement Company
Veolia Environnement S.A.
American Water Works Company Inc.