Pollution is a contamination of our environment. Water is pure , as long as no pollutant degrades it. This resource can be polluted in a natural way, but it can also be polluted by human activities. There exist three main kinds of water pollution, which have been identified by Surfrider Foundation Europe, a NGO whose mission is « to protect and promote the ocean, the shore, the waves, the lakes, the rivers and all the populations who benefit from them ».

• 
•