Su Watergas sono presenti 356 associazioni internazionali.

GIE

GAS INFRASTRUCTURE EUROPE

Avenue de Cortenbergh 100
Bruxelles (Belgium)

GITA

GEOSPATIAL INFORMATION TECHNOLOGY ASSOCIATION

PO Box 3406 80155 Englewood CO US
2851 S. Parker Road, Suite 1210
Aurora CO 80014 (United States)

GTI

GAS TECHNOLOGY INSTITUTE

1700 S Mount Prospect Road
Des Plaines IL 60018 (United States)

GWOPA

GLOBAL WATER OPERATORS' PARTNERSHIP ALLIANCE

UN Campus Bonn, Platz der Vereinten Nationen 1
Bonn (Germany)