Water crisis. India. 1, film 1

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Water is becoming increasingly scarce. Scientists believe 50% of nations will be hit by water shortages by 2025. Many people think wars will result. The following films look at water problems across the world. India: Sewage and pollution have made the river Ganges one of the most dangerous rivers in the world. Since the 1980s campaigners have been lobbying to stop the flow of filth into the river. Electric-powered treatment plants have been brought in to purify the sewage - but these work only intermittently. Meanwhile India's capital Delhi is having its own water crisis. Some parts of the city enjoy water in abundance, in others people are dependent on tankers bringing water to their area. Children are being killed in the daily scrabble for clean water.