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Water is an increasingly important and why it is important to surface water quality, which is given by the analysis of physical-chemical, biological and observing the investigation of water, biota, environments investigation. Analysis of the Prut river in terms of biological and physical elements-chemical. Evaluation of ecological and chemical status of water was done according to order of approval of the standard classification nr.161/2006 surface water to determine the ecological status offatcat:nqjz76l3pjc7dct5mvd4htpuf4