The objective of this study was to measure the concentration of total chlorophyll and its protein content by exposing aquatic plants Lemina minor to varying concentrations of heavy elements [10, 20, and 30 mg/L] for a month in order to evaluate the effects of these salt concentrations on the physiological conditions of the plants. The results of the investigation showed that the concentrations of the components in the water plants used for the analysis rose toward the end of the study in a different manner than in the control sample. The response of water plants exposed to heavy metals was examined in terms of their protein and chlorophyll contents.