Su Watergas sono presenti 356 associazioni internazionali.

NIGC

NATIONAL IRANIAN GAS COMPANY

PO Box 15875-4533 Tehran IR
District 6, Azodi Street Tehran IR
(Iran (Islamic Republic of))

NOC

NATIONAL OIL CORPORATION

Assekka Road
Tripoli (Libyan Arab Jamahiriya)

NOGA

NATIONAL OIL & GAS AUTHORITY

c/o GBCORP Tower, 19th Floor Building No. 1411
Road No. 4626, Block 346 - Bahrain Financial Harbour District, Sea Front
Manama (Bahrain)

NOROG

NORWEGIAN OIL AND GAS ASSOCIATION

PO 8065 4068 Stavanger NO
Fjordpiren, Laberget 22 4020 Stavanger NO
(Norway)

NPF

NORWEGIAN PETROLEUM SOCIETY

Lilleakerveien 10 NO-0283 Oslo NO
(Norway)

NRWA

NATIONAL RURAL WATER ASSOCIATION

2915 S. 13th Street
Duncan OK 73533 (United States)

NWASCO

NATIONAL WATER SUPPLY AND SANITATION COUNCIL

PO Box 34358 Lusaka ZA
164 Mulombwa Close Postal Address: P.O. Box 34358,
Fairview, Lusaka (Zambia)