National Water Company,
P.O BOX 676 RIYADH 11421,
SAUDI ARABIA.
RIYADH, King Fahad Rd.
TEL : +966 14409444 Ext : 9256 – 9257 – 9258 – 9259 - 9260
FAX : +966 14409595
Toll Free Number: 8004411110
Email :  webmaster@nwc.com.sa