I heard that in the Southern part of Madagascar, people really suffer from lack of water. This zone is dry. People have to walk for kilometers to find water which is not even clean. Some people had even the idea to market clean water at a very high price.
One of my friend shared a simple method to disinfect water during our English Club meeting. I believe it can be a good idea to share it here today. The method is called SODIS (Solar water disinfection).