Su Watergas sono presenti 357 associazioni internazionali.

WIA

WATER INDUSTRY ALLIANCE

PO Box 1751 Adelaide SA 5001 AU
250 Victoria Square
Adelaide SA 5000 (Australia)

WISA

WATER INSTITUTE OF SOUTHERN AFRICA NPC

5 Constantia Park 546, 16th Road
Midrand, Johannesburg (South Africa)

WLPGA

WORLD LP GAS ASSOCIATION

182 Avenue Charles de Gaulle
Neuilly-sur-Seine (France)

WMA

WATER MONITORING ASSOCIATION - DIVISION OF THE STA

Unit 11, Theobald Business Centre, Knowl Piece, Wilbury Way, Hitchin
Herts SG4 0TY (United Kingdom)

WPC

WORLD PETROLEUM COUNCIL

Suite 1, 4th Floor, 1 Duchess Street
London W1W 6AN (United Kingdom)

WQA

WATER QUALITY ASSOCIATION

2375 Cabot Drive
Lisle IL 60532-3696 (United States)

WRE

WATER REUSE ASSOCIATION

625 First Street, #621
Alexandria VA 22314 (United States)