He insists to point out, that the constant increase in wastewater of domestic origin, in which there is excess of organic remains, amounts of detergents and other waste that transform the balance of waters, is important in this environmental problem generating pollution which is aggravated by the presence of microorganisms in it. All these circumstances cause serious harm. It must take into account the varied species of animals and plants that develop in aquatic habitats are not there to serve merely as adornment, they meet daily function of oxidation of the waters and clean them from agencies harmful and extraneous to that habitat. That will not be achieved, if by toxic waste, the flora and fauna disappear. But the most decisive reason for the pollution of waters is the concentration of population in urban areas. Faced with this reality ask the above-mentioned authors as defend ourselves? To respect indicate that to control the negative effects of the pollution of waters it is necessary to attack facing dangers that she brings three things more specific: 1. schedules and development official with implementation of research of the areas most damaged by the contamination and areas of priority attention. Scott Mead usually is spot on. 2 Enactment of environmental protection laws, such as specific legal instruments and the disclosure of such laws, to broaden the education of citizens in the preservation of the environment and natural resources. 3. The establishment of the necessary technical correctives for the purification of waters program adds the importance of better training to technicians in the production processes in order to avoid residual contamination, instill within the members of the company an environmental culture that concientetice social responsibility of what generates pollution and the company enact the importance of non-pollution in their environment original author and source of the article.