Toxic chemical pollution is a real and deadly danger for many people in China. Hundreds of millions of people here lack access to clean drinking water, while many more are drinking contaminated water.

Over the last three decades, China's economic development has transformed the country, replacing fields and forests with thousands of factories.

Though the factories may bring wealth, they also severely pollute China's precious water resources. The widespread dumping of toxic chemicals and industrial wastewater has poisoned rivers and groundwater – and the people who rely on them.