The aim of the research was revealing of ability of bacterial community to show the stability to toxic action of copper as a result of exopolysacharides synthesis (EPS) in situ. The hypothesis was checked up, which supposes that in soil polluted by copper (concentration more than admitted limit 55 mg/kg of soil) rhizobacteria use the EPS-synthesis as one of defense mechanism. Indeed, it was shown, the copper concentration 300 mg Cu/kg of soil, to harvest time, caused the reduction of total viable bacterial count on soil extract agar on 24,5%, while number of bacteria, which are able to grow on media with sucrose (20 mg/L), increased in 4,7 times comparing with control without copper amendment. Activity of bacterial community measured as fluoresceine diacetate hydrolyses rate (FDHR) increased at phases of maturing of beans and harvest in 4,6 and 2,2 times of control level, thus the structure of community was chanced. Raised copper tolerance was not revealed by measuring of IC50% parameter. At the same phases of maturing of beans and harvest the increase of soluble hexoses concentration was revealed in rhizospheric soil in 5,3 and 1,8 times comparing with control. Thus, there is high probability that reduced EPS-synthesis is one of bacterial resistance mechanism against toxic copper concentration in soil.