The results of the research presented in the article relate to modernization of wastewater treatment and environmental safety technology of remediation nature water after pollution. Have been showed his main criteria and condition of the using of plants in wastewater treatment for protecting ingress of substances into natural reservoirs and causing negative effects such as eutrophication and secondary pollution. The type of plants was selected with taking into account the environmental potential of water treatment on the basis of analysis of the data obtained. Continued for the use technology with plants help to preserve natural reservoirs for drinking for the future.