... by using an engineering means of water treatment It means that we have established an artificial water circulation system of using and discharging water within the huge - 10 - Journal of Water ... for the behavior of pesticides in the environment - 12 - Journal of Water and Environment Technology, Vol.2, No.1, 2004 TASKS OF RISK MANAGEMENT The goal of the environmental risk management should ... The fresh water evaporates from the surface of the earth and returns to the surface again as a rain Originally rainwater itself does not contain any contaminants, however, in the process of precipitation,...