Some American cities already do that. Unless things have changed in the thirty-five years since I lived there, one of those cities is Lawrence, MA.
> recycle sewerage for drinking water
>
> Some American cities already do that. Unless things have
> changed in the thirty-five years since I lived there, one
> of those cities is Lawrence, MA.
The entire Merrimack valley from Concord, Manchester, Hudson, Nashua, Lowell, Lawrence, Methuen, Haverhill ... all the cities in that basin use water from the Merrimack River for drinking water and pour their wastewater back into the river.