“Rivers
Turning to the rivers, we find the situation is only slightly better. While the groundwater is contaminated at a rate of 80-90%, the surface water – that is both lakes and rivers – is only polluted at a rate of 70%.
Similarly to the groundwater, half of it is unusable for any human application. This includes agriculture, industrial use, fishing, or even boating. This is because 225 billion tons of industrial sewage is dumped into Chinese rivers and lakes on an annual basis.”
China On The Verge Of A Major Food Crisis, Part 2: Water
https://www.zerohedge.com/geopolitical/china-verge-major-food-crisis-part-2-water