Waste Water Treatment Plant in Thala and Feriana

Project completed

This project aims at implementing wastewater infrastructure in the cities of Thala (15'000 inhabitants) and Fériana (27'000 inhabitants) in the Governorate of Kasserine, Tunisia. The infrastructure includes the financing of the treatment plants, the extension of the wastewater networks and pumping stations for both cities.

Country/region Topic Period Budget
Urban infrastructure and utilities
01.03.2012 - 31.12.2021
CHF  12’100’000

This project shall provide support to a region that used to be neglected under the previous regime.


- Contribution to improving the health situation in places covered by the program.

- Contribution to the protection of groundwater resources and surface.

- The project also contributes to the economic development of disadvantaged governorates through a regional rebalancing of investments in basic infrastructure.

Medium-term outcomes

Domestic, commercial and possibly industrial discharges are collected, cleaned and disposed properly, effectively, ecologically and hygienically. The operation of the related process is financed sustainably.


Expected results:  

Construction of sewage systems, transfer pipes, disposal systems and WWTPs in the cities of the program. ONAS has the organizational tools, and the technical, financial and human resources to ensure the functioning of the treatment systems and maintenance.

Directorate/federal office responsible SECO
Credit area Development cooperation
Project partners Contract partner
  • Organisation nationale de l'assainissement ONAS, Tunisie

Budget Current phase Swiss budget CHF    12’100’000 Swiss disbursement to date CHF    0 Budget inclusive project partner CHF    11’650’000
Project phases

Phase 2 01.03.2012 - 31.12.2021   (Completed)