China: only 3% of underground water not polluted

Astonishing figures from the China Geological Survey show how badly underground water in China has been polluted.

Underground water makes up one third of China's water resources. Yet 90 percent is not drinkable, with 60 percent badly polluted. According to monitoring data from 118 cities, underground water in nearly 64 percent of the cities is severely contaminated, 33 percent mildly polluted, while only 3 percent of the water is generally clean.