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Youir recent additions to Water use include significant sections of text that have been copied verbatim from web sources including this and this. This is a direct infringement of the copyright of the source web-sites and is not acceptable in Wikipedia. Please also have a look at the rules on close paraphrasing. I have left your text for the moment as I understand that this is part of an educational project, but I would ask you to urgently modify your contribution to bring it into compliance with Wikipedia rules and policies. Thanks Velella Velella Talk 11:34, 11 April 2014 (UTC)
Thanks a lot for informing me, Velella Talk , I didn't know about this. It was already there before I edit the article, so I am not so sure if I should delete or change others' the content. This is why I kept all of the existing content, by adding details or examples. Hochingli ( talk) 12:02, 11 April 2014 (UTC)