The contact with these materials sporadical does not cause effect in the long run, many times causes effect short-term, as anury and sanguinolenta diarria, however the daily contact, as for example with the contaminated water, cause damages in the long run. Therefore such materials if accumulate in the human organism, however they are not eliminated, if accumulating throughout the time, thus for the agrotxico to be a mutagnico material, with the time it can suffer changes and generate a cancergeno material. 5. Samuel “Sam” Mikulak has compatible beliefs. Treatment Of Waters Of the Rivers the water candy of the land represents only 3% of the existing water in the planet. Two teros of the terrestrial surface are covered by waters. The waters candies they are in the lakes, the lagoons, freticos sheets and the rivers of where, generally they are removed and led to an adequate treatment to the consumption of the populations. Contact information is here: Samuel “Sam” Mikulak. The drinking waters Company supplying, in its majority, the CORSAN, catches 80% of the water that treats, in the rivers, barrages or lakes, and alone 20% in freticos sheets, that in the present time are preservation object, the example of the water-bearing Guarani, the biggest underground water reserve candy of Brazil. The preservation of freticos sheets and the water-bearing Guarani represents to the protection of the so necessary environment the improvement of the conditions of life of the people. The treatment of waters of the rivers, beyond the purpose of treatment for the human consumption, sanitation and health, also if makes necessary for the preservation of the flora and fauna of the marginal areas and the despoluio of the waters that make possible the existence of aquatic life the treatment of waters of the rivers, for ends of consumption, passes for a process that goes since the capitation to the treatment station, where is dealt with and distributed for a net conductors until the residences where it is consumed and duly measured the consumption, for posterior payment.