Vilniaus Vandenys operates sewage collection systems of Vilnius City, Ðalèininkai, Ðvenèionys and Vilnius regions. For sewage collection and transport to sewage treatment plants, 1013 km of sewage networks and sewers, including 154.2 km of pressure lines, and 53 waste water pumping stations (39 in Vilnius) are employed. 0.52 mill. of consumers use wastewater collection system, among these – 0.5 mill. – in Vilnius. In 2005, 2.5 km of gravitational waste water pipelines and sewers and 1.7 km of pressure pipelines were renovated.
Vilniaus Vandenys runs 9 waste water treatment plants. The Vilnius Waste Water Treatment Plant is the biggest in the country and treatment of sewage in Vilnius by 72% reduces a total amount of Lithuania pollutants’ release into the Neris river and, consequently, to the Nemunas and to the Baltic Sea basin. The modernization of the Wastewater Treatment Plant and the installation of equipment for nitrogen and phosphorus removal resulted in a significant treated wastewater quality improvement and now it meets totally the requirements of the EN. On June 15, 2005 in Helsinki the members of the Baltic Marine Environment Protection Commission came to a unanimous decision and crossed out Vilnius from a list of the Baltic Sea polluters.

Data	Unit	Value
Sewage collection and transport	mill. m3	38,7
Total length of sewage pipelines	km	1013,0
The length of sewage pipelines per one inhabitant	m	1,9

The Vilnius Waste Water Treatment Plant treats 40.4 mill. m³ of sewage, i.e. the average -110.7 thous.m³/d. 98% of organic pollutants are trapped in the Plant. Daily amount of the dewatered sludge in the Plant is 250 tonnes. It has to be utilized. The dewatered sludge is used as fertilizer and for land recultivation. Now, 56% of sludge is used as fertilizer, the remained is transported to a special storage site in Karijotiškës landfill or is used for compost. Karijotiškës landfill will be closed soon and no sludge site will be in Kazokiškës landfill, thus sludge will be composted. Now sludge composting sites are under construction and in the nearest future up to 30% of the sludge will be composted. At present the Ministry of Environment of the Republic of Lithuania is preparing a regional sludge management program including the sludge treatment technology in Vilnius city. The program will be financed by the means of the EU funds.