On the Russian side, insufficiently treated wastewaters discharged from settlements, mainly the village of Wtirtsila (Sortavala municipal district, Karelia) and from the Vartsila metallurgical plant, exert pressure (local, moderate), but the plants use mechanical and biological treatment. The biggest nutrient load originates from agriculture (5.8 tons/year of phosphorus and 98 tons/year of nitrogen), and forestry and peat production combined are almost in the same order (5.0 tons/year of phosphorus and 76.3 tons/year of nitrogen). Low water periods pose problems to fisheries (Janisjarvi Reservoir).