In message , Alan Gardiner
writes

"Philip Eden" philipATweatherHYPHENukDOTcom wrote in message
. ..
The river Lea runs past the bottom of my hill north of Luton town
centre,
[snip]
Unlike the River Lea the Ver gets all of its water from springs; I
assume that the Lea is flowing well downstream of the sewage works
discharge (it may be fully treated but its origin can easily be
detected).

Alan


The Lea is certainly fine downstream at Ware.
--
Tim