Su Watergas sono presenti 357 associazioni internazionali.

AFWA/AAE

AFRICAN WATER ASSOCIATION

Riviera Parlmeraie - Rond point, Place de la Renaissance 25
BP 1174 Abidjan (Ivory Coast)

AGA

AMERICAN GAS ASSOCIATION

400 North Capitol Street NW, Suite 450
Washington DC 20001 (United States)

AGN

ASOCIACION GAS NATURAL

Of. 802, Isidora Goyenechea 3250
Santiago (Chile)

AGN

ASSOCIA?AO PORTUGUESA DAS EMPRESAS DE GÁS NATURAL

Av. Eng.° Duarte Pacheco, Torre 2 - 17° Piso
1070-102 Lisboa (Portugal)

AGWA

ASSOCIATION OF GROUND WATER AGENCIES

725 N. Azusa Avenue
Azusa CA 91702 (United States)