Presume https://www.independent.co.uk/climate-change/brexit-raw-sewerage-water-treatment-b1915765.html is what is being discussed here... yikes!

Note the footnote:
This article was updated on 8 September 2021 to remove an inaccurate reference to ‘raw sewage’. The water in question has been partially treated but has not undergone all the steps normally required. It also incorrectly referred to three risk categories in relation to different grades of waste water, whereas in fact the risk categories were assigned to different water treatment works.

Last edited by PaulV; 09/09/21 05:15 PM.
M3W5sp 2015, MSCC, MTWC, Oxon UK