system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is China's water crisis? How bad really is it?
gpt
Their waters are polluted and they are draining their aquifers. 

The are building a lot of infrastructure to help convey water from places that have it to places that need it, and working on cleaning up the pollution. But a lot of people will be drinking bad water in the meantime.