User talk:Anhnguyen239

Welcome!
Hello, Anhnguyen239, and welcome to Wikipedia! My name is Shalor and I work with the Wiki Education Foundation; I help support students who are editing as part of a class assignment.

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Jerry's Comment
This is a very well organized article and I can see from the history how much work you have put in for this much more easily-understanding layout. The addition of the sections are also very well-thought and important. The article is very balanced between sections, and the content is very neutral. The only thing I would like to see is the expansion of the "Developing Countries" and "Regulation" section. The ways of water treatment must be different between countries with different financial situations. It will give the article a more neutral and balanced perspective if these two sections can be illustrated better. Thank you! — Preceding unsigned comment added by Qkyang (talk • contribs) 04:15, 19 November 2019 (UTC)