Right or wrong do exist, I also think Xi is an a-hole. But people ignore issues that are "inconvenient" for them and their allies is what drives me crazy. I would prefer people put their own oxygen masks on before helping others.
For the southern parts of China, I would say almost all the countrymen have access to tap water. For the northwestern parts, it is still pretty bad, a lot of them still rely on rivers/wells, although I don't have numbers. As for how clean the water is, that is something I have no idea about, and I am not optimistic.
Edit: grammar.