ONAS enjoys a good reputation among international donors and agencies that contribute in the financing of its projects.
Financial cooperation prospects:

 Implementation of new sanitation facilities (networks, pumping stations, wastewater treatment plants....);
 Rehabilitation and extension  of  the existing facilities,

 Purchase of control, management and operation equipments;

 Adopting new technologies in the field of sanitation;

 Improving the quality of service,

 promoting the participation of the private sector in the field of sanitation

Indeed, since its establishment, O.N.A.S. has received loans and grants amounting to about 1308,71 million TND, (data 2009) from the following partners:



 IBRD (International Bank for Reconstruction and Development)

 IDB (Islamic Development Bank)

 Tunisian cooperation with the French Development Agency (AFD)

 Tunisian-Belgian Cooperation

 NIB-NDF (Northern Investment Bank – Northern Development Fund)

 KFAED ( Kuwait Fund for Arab Economic Development)

 JICA (Japanese Agency for International Cooperation)

 KFW (German Development and Reconstruction Foundation)

 EIB (European Investment Bank)

 European Community

Official web site of the National Sanitation Utility