Su Watergas sono presenti 356 associazioni internazionali.

ISA

THE INTERNATIONAL SOCIETY OF AUTOMATION

67 T.W. Alexander Drive - PO Box 12277
Research Triangle Park NC 27709 (United States)

ITA/AITES

INTERNATIONAL TUNNELLING ASSOCIATION

c/o MIE 2 Chemin de Balexert 9
Châtelaine (Switzerland)

IUVA

INTERNATIONAL ULTRAVIOLET ASSOCIATION

6935 Wisconsin Ave, Suite 207
Chevy Chase MD 20815 (United States)

IWA

INTERNATIONAL WATER ASSOCIATION

Export Building, 1st Floor, 1 Clove Crescent
London E14 2BA (United Kingdom)

IWA NAMIBIA

MINISTRY OF AGRICULTURE, WATER & FORESTRY

c/o Department of Water Affairs & Forestry
Government Office Park, Luther Street, P/Bag 13184
Windhoek (Namibia)