Hi Stuart, Namibia my ...
Published by Gary Brown, Water Practitioner at Dikubu Water
Hi Stuart, Namibia my neighbour north of us here in South Africa had pioneered effluent re-use several years back and have gone through an extension/upgrade phase. This should be a useful link:http://vuir.vu.edu.au/32234/1/WQ%2BCase%2BStudy%2B4%2B-%2BWindhoek%2BNamibia%2B100815.pdf
Singapore (NEWater) and UAE are emerging leaders in developing and applying tech
singapore article:https://www.sciencedirect.com/topics/engineering/newater
Middle East region:http://documents1.worldbank.org/curated/en/405461468136207446/pdf/717450WP0Box3700Principle00Practice.pdf
Hope this helps, I can reference more on Namibia if needs be, drop me a note gary@dikubu.co.za
Regards
Gary