Water is of inestimable importance in the evolution of the living world. Water is practically a condition for the survival of life on Earth. The first form of life originated in water. Global water consumption is increasing every year. Man needs a minimum of 50 liters of water a day - for drinking, washing, cooking and sanitation, and a billion people on the planet do not have that minimum. And knowing all this, man consciously destroys what nature has given him. Plastic bottles, bags and some kind of waste float on rivers and lakes. If each of us took care of the environment and water surfaces, we are sure that the pollution would be at a lower level than now.