Su Watergas sono presenti 356 associazioni internazionali.

IBP

INSTITUTO BRASILEIRO PETRÓLEO, GÁS E BIOCOMBUSTIVEIS

Av. Almirante Barroso 52 - 26° andar
20031-918 Rio de Janeiro (Brazil)

ICC

INTERNATIONAL CORROSION COUNCIL

Great Britain (United Kingdom)

IEA

INTERNATIONAL ENERGY AGENCY

9 Rue de la Fédération
Paris Cedex 15 (France)

IFMA

INTERNATIONAL FACILITY MANAGEMENT ASSOCIATION

800 Gessner Road, Suite 900
Houston TX 77024-4257 (United States)

IGA

INDONESIAN GAS ASSOCIATION

c/o PT. Perusahaan Gas Negara, Tower A, 1st Floor
Jl. KH. Zainul Arifin No.20
Jakarta (Indonesia)

IGEM

INSTITUTION OF GAS ENGINEERS AND MANAGERS

26 & 28 High Street
Kegworth, Derby DE74 2DA (United Kingdom)