A Palestinian man stands on a sewage outlet pouring on the beach in central Gaza Strip March 22, 2010. In Gaza, where 1.5 million people live, more than 40 private water purification plants and at least 20,000 home purification filters, are used to provide safe drinking water to local residents since the tap water is proved to be unhealthy. March 22, 2010. Photo by Wissam Nassar/Flash90.