Neva
Ecological condition

The Federal Service for Hydrometeorology and Environmental Monitoring of Russia classifies the Neva as a "heavily polluted" river. The main pollutants include copper, zinc, manganese, nitrites and nitrogen. The dirtiest tributaries of the Neva are the Mga, Slavyanka, Ohta, and Chernaya. Hundreds of factories pour wastewater into the Neva within St. Petersburg, and petroleum is regularly transported along the river. The annual influx of pollutants is 80,000 tonnes, and the heaviest polluters are Power-and-heating Plant 2 (Russian: ТЭЦ-2), "Plastpolymer" and " Obukhov State Plant ". The biggest polluters in the Leningrad Oblast are the cities of Shlisselburg, Kirovsk and Otradnoye, as well as the Kirov thermal power station. More than 40 oil spills are registered on the river every year.

In 2008, the Federal Service of St. Petersburg announced that no beach of the Neva was fit for swimming.

Cleaning of wastewater in Saint Petersburg started in 1979; by 1997, about 74% was purified. This rose to 85% in 2005, to 91.7% by 2008, and Feliks Karamzinov expected it to reach almost 100% by 2011 with the completion of the expansion of the main sewerage plant.
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