"The carcass of a dead dog floats on the lake that supplies tap water to 750,000 Venezuelans. Witch doctor Francisco Sanchez has just dumped the previous night’s sacrifice from a cliff, contaminating the resource that has become more scarce than gasoline in Caracas. The water from Lake Mariposa, polluted by sacrifices and garbage from a local cult, is pumped to a 60-year-old treatment plant that lacks the technology to make it safe for drinking, said Fernando Morales, an environmental chemistry professor at Simon Bolivar University in Caracas who has visited the site. " (Quoted from article)