Controlling the water cycle

A water project in Severozapaden, Bulgaria is set to improve the water network for residents and the environment, with safer and better access to drinking water and 100% of the population connected to the sewerage network (up from 87%).

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The Vratsa agglomeration will soon be served by modern water infrastructure, with upgrading work being carried out on some 78 km of main and secondary water supply branches, benefiting the 77 000 residents in the project area.

Cleanliness and compliance

The plant facilities will be owned by the Municipality of Vratsa, which will provide the water company, VIK Vratsa OOD, with the infrastructure for operations and maintenance. The investments made will help Vratsa comply with EU drinking water and urban wastewater directives. A reliable and compliant water service is expected to help make the Vratsa area a more attractive place to invest in.

Controlling the process, from start to finish

For the water supply aspect of the project, the works on the 78 km of supply will include replacement of the asbestos-cement pipes with HDPE pipes. The 33 km transition water main from the Srechenska Bara dam to Vratsa will also be reconstructed. A key aim is to improve supply security and decrease operation and maintenance costs by replacing worn-out water mains and reducing water losses.
In terms of wastewater collection and treatment, the project involves reconstructing and upgrading about 8 km of the existing main sewer collectors and about 13 km of the secondary sewer network, as well as extending about 26 km of the sewer collector network and renovating the agglomeration’s wastewater treatment plant, which will eventually have the capacity for a population equivalent of 94 000. The technology to be applied is activated sludge nutrient removal with aerobic sludge stabilisation. The sewer collector network in the Podbalkanski, Kulata and Bistrets districts will also be extended, with sewer branches built along town streets connected to the main sewer collectors.

Benefits reach far and wide

The main results expected are: an adequate level of water treatment and better water quality in the Dubnika River downstream (less organic and nutrient pollution); reduced uncontrollable outflows of untreated wastewater; total population connected to sewerage systems; and reduced leakage and infiltration in the sewer networks. The project will also supply flow measurement and pressure regulation equipment, reduce losses in the water supply network by 65%, and reduce health risks for the population through cleaner water. In terms of jobs, the project is expected to create 520 direct jobs during the implementation phase.   


Draft date

06/02/2011