A great deal of fuss is made in last week's NCE about recycling effluent for drinking water. But, so far as I am aware, we have been doing this in the UK for donkey's years.
I understand that there is more than one major river in England (and possibly Wales) where sewage is discharged and water for drinking extracted.
For each town, the extraction point is upstream and the discharge point downstream. Then the next town further downstream will extract river water for drinking and so the process continues.
So why is it being trumpeted as a new idea?
Judith Rastall (M), judith@rastall. com