Project number:


Business sector:

Municipal and environmental infrastructure

Notice type:


Environmental category:


Approval date:

24 Nov 1998



PSD disclosed:

12 Nov 1998

Project Description

Design, financing and construction of a waste-water treatment plant as well as its maintenance and operation for a 22-year period in the city of Maribor, Slovenia.
This project has two main objectives. The first is to allow Maribor’s waste water to be treated to EU standards (at present the city’s waste water receives no treatment). The second is to optimise private sector involvement in the financing and provision of a municipal service.

Transition Impact

This project will be the first waste-water treatment plant to be financed under a BOT (build-operate-transfer) structure in the region. It is also the first to have gone through a process of full international competitive bidding. The project will help develop the frameworks that promote market functioning and efficiency and is expected to have an important demonstration effect.

The Client

The beneficiary of the Bank’s loan would be the special-purpose vehicle Aquasystems d.o.o, which is majority owned and controlled by a consortium led by Suez Lyonnaise des Eaux.

EBRD Finance

The EBRD would provide a loan of EUR 28.1 million. The operation would be financed under an "A/B" structure, with the EBRD providing an A-loan of EUR 14.8 million and commercial banks providing a B-loan of EUR 13.3 million.

Project Cost

EUR 35.2 million

Environmental Impact

The project was screened as A/0, requiring an environmental impact assessment (EIA) of the proposed waste-water treatment plant. The EIA was performed by independent environmental consultants, and investigated possible impact from the operation and construction of the plant. Potentially affected areas included surface and ground waters, soil, landscape, natural habitats, flora, and fauna. On review by the Bank, the EIA was found to be satisfactory in both its summary of potential impact and the adequacy of proposed mitigation measures. The plant will be designed to meet the standards set in the 1991 European Union directive on urban waste-water treatment and local legislation, such as the Regulation on Emission of Discharges of Waste Water from Urban Water Treatment Plants.
The EIA included a number of recommendations, which have been taken into account during the design of the plant. Additional to those design aspects, the project will be carefully monitored to ensure that both during the construction and operation, work is carried out to the highest standards and the plant remains watertight throughout its operating life. The plant will have a major positive impact on both the environment and public health as it will allow a great improvement in surface and possibly ground waters.
There is an Environmental and Social Impact Assessment available for this project.

Technical Cooperation


Company Contact


Business opportunities

For business opportunities or procurement, contact the client company.

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Text of the PIP

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