The most polluted lake in Central America, Amatitlan Lake, receives its effluents from a largely urbanized watershed that extends 381 Km2. With more than half of Guatemala City situated within the lake s watershed, sediments, polluted runoff and sewage constantly get deposited into the lake, turning it into a dead, eutrophic body of water with high contamination ratings comparable to a sewage tank. Most people living on in this watershed don t imagine that the untreated domestic waste that they dump into the river is partly to blame for the catastrophic degradation of Lake Amatitlan. This...