Water pollution

Contamination of fresh water - the hit of various pollutants in the water of rivers, lakes and groundwater increases from year to year. It occurs by direct or indirect contact with contaminants in the water in the absence of adequate measures for the removal of harmful pollutants or their neutralization with the help of cleaning agents. In most cases contamination of fresh water is not visible, because contaminants are dissolved in water. But there are exceptions: foaming detergents, as well as floating on the surface oil and raw sewage. There are several natural pollutants. Aluminum compounds fall out in fresh waters as a result of chemical reactions. Floods wash out magnesium of the soil of meadows, which causes great damage to fish stocks. However, the volume of natural contaminants is negligible compared to the man-made. Annually thousands of chemicals fall out in water basins with unpredictable effects, many of which are new compounds. Elevated levels of toxic heavy metals (such as cadmium, mercury, lead, chromium), pesticides, nitrates, phosphates, petroleum, surface-active agents (surfactants) can be detected in the water. As you know each year the seas get up to 12 million tons of oil.