Investigation of the adsorption capacity of heavy metals in the water after the mineral exploitation and in laboratory water was mixed with a fix concentration of heavy metals (500mg/l and 1000 mg/l) of banana peels and peanut shells, the authors can see that banana peels and peanut have a very well metals adsorption capacity. Since, comparison and assessment the concentration of heavy metals Pb, Cu in the water before and after the experiment. When the amount of adsorption material increases, the capacity adsorption for Cu, Zn, Pb increases. For example with the banana peel, the ability to absorb heavy metals is highest when the banana peel entered is 600g, banana peels can absorb about 61 percent (treatment 3 Pb with the amount of banana peels is 600g) 2.6 times compared with the amount of heavy metals Pb that it absorbed in treatment 1 Pb (with the amount of banana peels is 200g). The heavy metals that move into the waste water also have a high results, the adsorption capacity reaches the efficiency 30 percent-80 percent by comparing with the initial performance. Banana peels and peanut shells have the ability handling the highest Pb, followed by Cu.