Water is unique substance

Water is a unique substance that causes life and is irreplaceable. Organisms on the planet Earth contain 50-80% water. The human body contains about 70% water. Of the total quantity of fresh water on Earth, only 0.6% available for use. The trend of increasing needs for water in the world and with us is very great. In the last 100 years, consumption has increased eight times. Most waste in agriculture, about 69%, then the industry, 21%, and households, 10%. Particularly worrying circumstance it is evident trend of reduction of available water supply per capita. The ratio of people to keep it all worse. The biggest and main water pollution are: industrial waste water, municipal wastewater and wastewater from agricultural goods. Effects of pollution on aquatic ecosystems are manifold. It is estimated that 20% of freshwater fish species for life in the contaminated water is the extinction in the North Sea due to oil spills, a year die between 150,000 and 450,000 sea birds. It is believed that the 2025th The 2 / 3 of mankind will feel a serious lack of drinking water. Clean water is less and it is increasingly expensive. According to the UN and WHO about 1.2 billion people in the world has problems to come to drinking water, and nearly 3 billion does not have adequate access to safe water hygiene. Every year, 1.8 million people die from infections digestive system what is the cause of dirty water. Water protection is achieved primarily preventing discharge of waste water and disposal of waste in rivers, construction of devices for purifying drinking water, flood protection and consistent laws on the environment. For these activities must all be interested, and each individual can contribute to the protection of rational water use.