Wastewater Collection and Treatment in Zenica

The project, co-financed with the German Development Bank (Kreditanstalt für Wiederaufbau, KfW) entails the construction of a wastewater treatment plant (WWTP) and necessary measures for the municipal wastewater network. Additionally, activities for Corporate Development of the public utility and minor urban development measures are planned.

Country/region Topic Period Budget
Bosnia and Herzegovina
Urban infrastructure and utilities
01.12.2017 - 31.12.2021
CHF  5’610’000

Today, still only 31% of population of Bosnia and Herzegovina have access to wastewater services, but at present 12 WWTP are in preparation or under construction in the country. In the city of Zenica, at the moment, approximately 75% of the urban population are already connected to the central sewage network. However, the municipal wastewater is discharged into the river Bosna without treatment and is additionally mixed with the industrial wastewater. The discharge of untreated urban wastewater leads to a considerable pollution of the river and health risks for the population.


The overall objective (impact) of this project is the protection of the environment, specifically of the Bosna river and the improvement of the living conditions of the population of Zenica as well as the downstream localities in Bosnia Herzegovina. Accorrdingly, the goal is to introduce reliable and sustainable wastewater services for the population in Zenica.

Medium-term outcomes

To establish the collection, transmission and treatment of municipal wastewater of the City of Zenica in an environmentally sound and hygienic manner at affordable costs

The public utility shall run in an economically sustainable way within a functioning and adequate institutional and regulatory framework

To contribute to the sustainable and green urban development within the City of Zenica


Expected results:  

Sewerage network and main collectors are rehabilitated and/or extended

The waste water treatment plant is constructed and is put in operation

The sewerage infrastructure is operated and maintained sustainably

New bike lanes (or similar urban development measures) are constructed

Directorate/federal office responsible SECO
Credit area Development cooperation
Project partners Contract partner
  • KfW banking group

Budget Current phase Swiss budget CHF    5’610’000 Swiss disbursement to date CHF    0 Budget inclusive project partner CHF    22’563’000
Project phases Phase 1 01.12.2017 - 31.12.2021   (Current phase)