Talk:Drinking water quality standards

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This article was the subject of a Wiki Education Foundation-supported course assignment, between 23 January 2019 and 8 May 2019. Further details are available on the course page. Student editor(s): Miegodorales, ThomasDunker.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 19:50, 16 January 2022 (UTC)

Are these official standards?
International standards generally have a reference number, issued by some international body such as ISO. --RichardVeryard (talk) 04:21, 17 April 2010 (UTC) hardness of water <200ppm pH 6.5-8.5 alkalinity as low as posible — Preceding unsigned comment added by 14.139.85.83 (talk) 10:26, 6 October 2013 (UTC)

Context and accuracy
I am no expert but this page looks far from complete. There is no mention of the levels 100s of pollutants that are found in drinking water. The four inorganic chemical mentioned is but a small subset of the total. -- Alan Liefting (talk) - 06:40, 8 August 2010 (UTC)


 * I agree; It has now been totally re-written from agreed international sources (WHO, European Drinking Water Directive and EPA)  Velella  Velella Talk 21:12, 7 August 2011 (UTC)

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P.R.China's standard is GB 5749-2006 (Standards for drinking water quality) http://www.gb688.cn/bzgk/gb/newGbInfo?hcno=73D81F4F3615DDB2C5B1DD6BFC9DEC86 ,not"Environmental quality standards for surface water". Chinese language is edited https://zh.wikipedia.org/wiki/%E9%A3%B2%E7%94%A8%E6%B0%B4%E6%B0%B4%E8%B3%AA%E6%A8%99%E6%BA%96 .My English level is not enough to edit this page.Need your help. 美柳 (talk) 15:36, 26 September 2017 (UTC)

Added Expand language|langcode=zh tag 美柳 (talk) 10:12, 3 October 2017 (UTC)

empty fields in the table
What do the empty fields in the table indicate? Stjohn1970 (talk) 16:14, 14 May 2021 (UTC)
 * This table has multiple errors. How many errors overall, I don't know, but the "US" column has missing or outdated entries. I do not recommend that you rely on this table for anything important; always check the official regulations or documents.
 * If the table was regularly & responsibly maintained (which is a difficult ask on Wikipedia, mostly relying on volunteer editors), all of the fields would either display some value, "NS" or the " symbol, as explained in the legend just above the table. But there are some completely blank fields, for which there is no explanation; and some of the numeric values displayed are incorrect. Moreau1 (talk) 16:36, 14 May 2021 (UTC)

Some work required on the lead
If someone has time, please do a bit of work on the lead: It should be a better summary of the article. Also, it contains information that is not included elsewhere in the article, see the tag added in May this year (this content should be added to the main text as well). EMsmile (talk) 12:54, 25 October 2023 (UTC)