We've had a lot of discussion here about ownership and finance but we haven't addressed how to actually stop sewage going into the rivers. When I was a child in the 1950s we had 'deep drainage' put in and instead of using an outside privy, which was emptied weekly and taken away, we now had a flushing, indoor loo. The rainwater and the sewage now all go to the treatment works, which can no longer cope with the volume. We used to have a bath once a week (in front of the fire), now everyone, apart from me, seems to shower everyday, and wash all their clothes after wearing them once. We all have a part to play in this and the only remedy is to direct rainwater direct into rivers and only the household water, sewage and waste from sinks to go to the treatment plants. Every street will need to be dug up, additional drains laid and vast sums of money spent.