Water pollution is any chemical, physical or biological change in the quality of water that has a harmful effect on any living thing that drinks or uses or lives (in) it. When humans drink polluted water it often has serious effects on their health. Water pollution can also make water unsuited for the desired use.Water pollution is usually caused by human activities. Different human sources add to the pollution of water. There are two sorts of sources, point and nonpoint sources. Point sources discharge pollutants at specific locations through pipelines or sewers into the surface water. Nonpoint sources are sources that cannot be traced to a single site of discharge. There are many types of water pollution because water comes from many sources.  Here are a few types of water pollution: 1.Nutrients Pollution 2. Surface water pollution 3. Oxygen Depleting 4. Ground water pollution 5. Microbiological 6. Suspended Matter 7. Chemical Water Pollution 8. Oil Spillage. Industrial causes of water pollution. Industrial waste. Sulphur. Asbestos. Lead and Mecury . Nitrates & Phosphates. Oils.Other causes of water pollution. Sewage and waste. waterSeptic Tanks. Ocean and marine dumping. Underground storage and tube leakages. Atmospheric deposition. Effects of water pollution. Death of aquatic (water) animals. Disruption of food-chains .Diseases. Destruction of ecosystems.