Read at :
China’s Clean-Water Program Benefits People and the Environment
Sep. 5, 2013 — Rice farming near Beijing has contaminated and tapped the city’s drinking water supply. For the past four years, China has been paying farmers to grow corn instead of rice, an effort that Stanford research shows is paying off for people and the environment.
Rice farming is more lucrative than corn for Chinese farmers, but flooded paddies contribute to decreased water quality and quantity.