Water Treatment Beijing China Chennai India

Take what I already have done and add onto it. I have provided several annotated resources in partial paper I am attaching. Please Cite every
additional resource that you use. I need 4 pages of content( 2 pages comparing and contrasting Beijing China and Chennai India) and (2 pages of
content comparing and contrasting practices in the US to Beijing China and Chennai India). Please make it fit with what I have so far.