4 Waters signed contract with the company UTVING VS, (which acts in a consortium with the company EPTISA Servicios de Ingenieria S.L.) for the provision of services on the project "Refurbishment of existing facilities WTP "Jezero" with "Predtretman" and construction of new facilities for treatment of waste and process water from production plants at "Makiš" complex, including associated sludge treatment".

The Project is financed by EBRD and the Client is Public Utility Company Belgrade Waterworks and Sewerage (BVK). Tasks include review of the existing design documentation, preparation of the Conceptual design for the Plant improvement/upgrade, Tender dossiers preparation, PIU support and procurement of works and works contract Supervision.