Water:drinking water quality, wastewater, stormwater.
Water is one of the most widespread substances in the nature - nearly 3/4 surfaces of our planet are covered with the rivers, lakes, oceans and the seas. In gaseous state water is present in the form of vapors at the atmosphere and also in the form of snow and ice at the northern countries, at tops of high mountains and polar caps. In the depths of the earth there is also water impregnating the soil and rocks. Water is of very great importance in life of plants, animals and the person, existence of life would not be possible without water as in any organism water represents Wednesday in which the chemical processes providing activity of organism, besides, proceed she takes part in a number of biochemical reactions.
Clear water represents colorless transparent liquid, however because of anthropogenic influence various pollutants-chemicals, mechanical impurities, microorganisms get to water. We deal with the environmental problems connected with water, water pollutants.