Bacteria and parasitic pathogens in conditions of chemical pollution of water from surface water bodies

There were identified priority pollutants in water of the Moscow river below the city (petroleum products, lead, cadmium, zinc, copper; anionic surfactants), which can affect the natural microbiocenosis of surface water. The presence in surface waters heavy metals — cadmium in a concentration of 4 MPC for fishery purposes, of lead at a concentration of 5 MPC for fishery purposes, oil at a concentration of 49 MPC, zinc at a concentration of 10 MPC for fishery purposes, anionic surfactants at the concentrations below the MPC, and also at excess of MPC by 5 times for chlorides, nitrites and nitrates to a large extent was established to  affect the viability of indicator bacteria — coliforms, E. coli, enterococci, while maintaining in the water of pathogenic bacteria — Salmonella and parasitic pathogens living Entamoebae spp. and cystic viable vegetative forms of pathogenic protozoa Flagellata spp. and viable helminth eggs Larvae spp.

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