Water pollution is a serious problem that affects us all. This is mainly caused by chemical substances, bacteria and other micro-organisms present in natural waters in greater numbers. Chemical substances, organic or inorganic (mineral) are in the form of solutions, colloidal solutions and dispersions. Most goes to water pollution along with sewage. Other sources of water pollution is the transport of water and land, the use of pesticides and fertilizers, and industrial and municipal waste. Water gets contaminated as a result of eutrophication. Water cycle has been disturbed by man - deforestation, monoculture farming, inappropriate and excessive treatment, agricultural, urbanization. To prevent pollution of groundwater, rivers, lakes, seas, etc. should segregate waste, dispose of them in special containers, do not put any chemicals and the waste disposed of at the plant.
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