In the last decade of 20^th century US-scientists developed researches about plant-affection on sites contaminated by heavy metals, organic and non-organic compounds produced by industry. Researches showed plant-affection in decreasement of their concentrations in soil, surface and groundwater. wich developed idea for planting plants at theese sites. The name of this new technology called phytoremediation means "correct evil" by plants. As a potential candidate for remediation are choosen Poplar trees because of their high transpiration and root possibility to follow groundwater.