Tunisia - Project to Improve the Quality of Treated Water

Project Summary

Approval Date 11 Jan 2012
Signature Date 29 Feb 2012
Planned Completion Date 31 Dec 2020
Last Disbursement Planned Date 31 Dec 2020
Sovereign / Non-Sovereign Sovereign
Sector Water Supply & Sanitation
DAC Sector Code 14022
Environmental Category 2
Commitment U.A 25,755,687.44
Status Completion

Project General Description

This project will help to improve the performance of sanitation services and the quality of treated wastewater (TWW) in Tunisia. It will contribute to achieving one of the National Sanitation Agency (ONAS)’ strategic objectives, which is attaining a 50% TWW reuse rate by 2016. The project will, through actions designed to promote TWW reuse, effectively contribute to reducing water stress in the country as well as addressing users’ grievances, which are increasingly being taken into consideration since the 14 January revolution in terms of access to a regular supply of sufficient quantity and quality of TWW for irrigation. It will be implemented from 2012 to 2016, comprising a series of operations under two components aimed at: (i) upgrading sanitation facilities by overhauling the water and sludge systems and transfer networks, and establishing remote monitoring and management systems; (ii) building the capacity of the National Sanitation Agency (ONAS) through assistance for studies, works monitoring and control, participation in training, procurement of operating equipment and project management. These operations will be implemented at a total cost of UA 33.30 million or TND 73.67 million, financed to the tune of 88% by the Bank and 12% by the Tunisian Government.

Project Objectives

The project aims to upgrade the sanitation infrastructure and strengthen the capacity of the National Sanitation Agency (ONAS) of Tunisia to improve the quality of treated water.


The will benefit about 3963 419 people, through 30 wastewater treatment plants (WWTPs) distributed in 17 Governorates.

Participating Organization

African Development Bank
Government Of Tunisia
Office National de l'Assainissement


IATI identifier 46002-P-TN-EBA-001
Last Update 02 Oct 2022


Contact Details

Name BEN SASSI Belgacem
Email b.bensassi@afdb.org

Geographic Location

Country Tunisia
Coordinates Location Name
36.76667 10.13333 Gouvernorat de Tunis
32 10 Tataouine
33.504 11.1122 Zarzis
36.08333 8.75 Gouvernorat de Kef
33.5 8.83333 Gouvernorat de Kébili
35.58333 9.83333 Gouvernorat de Kairouan
36.66667 8.75 Gouvernorat de Jendouba
33.83333 9.75 Gouvernorat de Gabes
37.08333 9.58333 Gouvernorat de Bizerte
36.63333 10.25 Gouvernorat de Ben Arous