Su Watergas sono presenti 357 associazioni internazionali.

WRF

WATER RESEARCH FOUNDATION

6666 West Quincy Avenue
Denver CO 80235-3098 (United States)

WSUP

WATER & SANITATION FOR THE URBAN POOR

7th Floor, Fleet House, 8-12 New Bridge Street
London EC4V 6AL (United Kingdom)

WWC

WORLD WATER COUNCIL

c/o Espace Gaymard
2-4 Place d'Arvieux
Marseille (France)

WWEMA

WATER AND WASTEWATER EQUIPMENT MANUFACTURERS ASSOCIATION

540 Fort Evans Road, Suite 304
Leesburg VA 20176-3379 (United States)

YEMEN LNG

Balhaf - Shabwah YE
(Yemen)

YPFB

YACIMIENTOS PETROLIFEROS FISCALES BOLIVIANOS

Calle Bueno 185 entre Federico Suazo y Camacho
PO Box 401 - La Paz (Bolivia)