Readers will know that in the UK we each use, on average, 140 litres of water per day. At the 2019 Waterwise annual conference a few weeks ago, we focused on getting to 100 litres or less. Sir James Bevan put a lot of welcome oxygen on the subject with his now infamous ‘Jaws of Death’ speech, in which he said ‘We need water wastage to be as socially unacceptable as blowing smoke....