Vodokanal St. Petersburg supplies potable water to the citizens - more 4,800,000 people  and to the city companies and organizations (17,500 consumers).

By 2009, the length of the water distribution networks was 6,391.4 km.  

Vodokanal provides wastewater services to the citizens and companies: the volume of treated effluent was 821.7 Mio. m3 in 2008. All in all, 954.1 Mio. m3 of wastewater was pumped via the municipal sewerage system.

The length of sewer networks – 7936.4 km, of tunnel sewers – 221.15 km.  

Moreover, Vodokanal operates the city fountains and fountain complexes; it is in charge of rehabilitation, capital repairs, purchase and operation of public toilets.  

2004 – 2,578,800 m3

2005 – 2,514,700 m3

2006 – 2,466,900 m3

2007 – 2,311,200 m3

2008 – 2,168,900 m3 

2009 – 2,028,200 m3 

2010 – 1,994,700 m3    

Water distribution losses

2004 – 16.3%

2005 – 17.0 %

2006 – 16.2%

2007 – 13.0%

2008 – 10.4%  

2009 – 11.0%    

2010 – 12.0%    

There are 9 waterworks (the biggest are Southern Waterworks, Northern Waterworks, Main Waterworks and Volkovskaya Waterworks) and 21 wastewater treatment plants (the biggest are Central WWTP, Northern WWTP and South-West WWTP) in St. Petersburg. 

Vodokanal’s major achievements in water treatment:

• all potable water is UV treated before supply to the city to ensure epidemiological safety;
• no liquid chlorine is used for water disinfection, it is substituted with hazard-free, non-toxic sodium hypochlorite;
• hazard-free and non-toxic ammonia sulfate is used for water ammonization instead of ammonia solutions;
• a bio-monitoring system is used to check the Neva water quality where the crayfish are chief “inspectors”;
• PAC (powdered activated carbon) dosing system is implemented to remove odours and oil.  

Vodokanal’s major achievements in wastewater treatment and disposal:

• Eighty-seven per cent of all wastewater was treated in Petersburg by 2009; in 2012, after completion of the Northern Sewer, the share of treated effluent will reach 98-99%;
• Petersburg has found a solution to the sludge utilization problem: there are three sludge incineration plants in operation in the city;
• The treatment plants in Petersburg have implemented the enhanced nutrient (nitrogen and phosphorus) removal process to meet the HELCOM (the Baltic Marine Environment Protection Commission) requirements.  

Vodokanal caries out its business in compliance with:

• the General Plan of St. Petersburg,
• the General Water Supply Scheme and the General Wastewater Disposal (Sewerage) Scheme for the period till 2015 and in consideration of the perspective till 2025 (as approved by Act No. 1587 of the St. Petersburg Government dated 11.12.2007)
• the program of integrated development of public utilities infrastructure in St. Petersburg which covers electricity,-heat,-water supply; wastewater disposal and treatment for the period up to 2015 (approved by Act No. 1270 of the St. Petersburg Government dated 21.10.2008).);
• the Corporate Development Plan.