to meet the challenges ahead, rather than degenerating into a war of all against all at the first signs of trouble. I also assume that a culture of consumption has arisen in which sufficiency rather than affluence is widely considered the path to human flourishing. I believe these are necessary elements to any 'prosperous way down' (Odum and Odum, 2001). What follows is dystopian in the limited sense that the analysis accepts that there will be no smooth transition beyond the growth economy, and that consumer lifestyles will be taken from many people against their will -- although perhaps 'realistic' is a better word than 'dystopian' here. Focused broadly on urban contexts in the developed world, the following analysis is structured by considering various aspects of the sufficiency economy, for the purpose of presenting a vision of the alternative way of life it implies. However the future plays out -- and let's face it, no one really knows -- what is certain is that the same events will be much less difficult and cause much less suffering if they are anticipated to some extent and prepared for (Alexander, 2012e; Burch, 2012b). I hope the following analysis might assist in both these regards. 4.1. Water I will begin with the issue of water security, this being one of the most essential biophysical needs. The first point to note is that in most urban (including suburban) contexts, the amount of roof space available to collect water would be insufficient to secure the