Su Watergas sono presenti 356 associazioni internazionali.

KNX

De Kleetlaan 5, Bus 11
Diegem (Belgium)

KSWE

KOREAN SOCIETY ON WATER ENVIRONMENT

81 Doosan-ro
Seoul (Korea, Democratic People's Republic of)

KVGN

ROYAL DUTCH GAS ASSOCIATION

Paterswoldseweg 806
BM Groningen (Netherlands)

LGI

LIQUID GAS IRELAND

180 Rathgar Road
Dublino 6 (Ireland)

LIQUID GAS EUROPE

EUROPEAN LPG ASSOCIATION

Rue Belliard 15-17
Bruxelles (Belgium)

LITHUANIAN GAS ASSOCIATION

NATIONAL LITHUANIAN ENERGY ASSOCIATION

Zveju st. 14
09310 Vilnius (Lithuania)