Hello Charles - I've been ...

Hello Charles - I've been studying this water use technology topic as part of a client project...the most advanced I was able to find so far that is integrating in-home, environment and infrastructure is the Aquarevo project in Melbourne, Australia - a logical place to find advanced thinking and investment in the field, given this part of the world already lives at the sharper edge of the scarcity crisis.  The caveat is that this project is in the process of becoming real in 2017 (the plot was massively over-subscribed at the end of 2016, they were all "Go" at the start of this year for construction) - I know you are looking for an operational and measurable impact...this one is the most advanced I could find with theoretical 70% reductions in mains water usage (and grandiose ambitions to go off-grid), but perhaps it might be a little "too" advanced for what you need given it is not finished yet.

It looks at:

• A rainwater tank in each home that directly supplies hot water services for all non-drinking household uses.
• Tank Talk - a rainwater management technology that uses weather forecast data to optimise water storage and reduce stormwater run-off
• OneBox - a pressurised sewerage network technology that transfers waste based on network volumes, requiring smaller pipes and less excavation
• An onsite grey water treatment plant, which supplies the development with Class A recycled water, suitable for washing machines, toilets and outdoor use
• Promoting an ability to share water between communities as a mundane event, with real-time smart controls and based on demand/supply balancing
• Each home can monitor via the app all water use and energy use at different levels of time granularity, and it can be scaled at admin level to view different areas from home up to total community to zero in on waste.
• Dumping stores proactively into garden irrigation/sewers well ahead of storms increasing storm drain capacity (flooding being nearly as big a problem as scarcity).
• Green and Blue "corridors" as a key innovation blending water infrastructure and environmental urban forest, designing street layouts, vegetation, tree canopies, topography and home structures to support the management of evaporation, rain run-off, temperature and supporting water storage above and below ground.

Some links to research it if you are interested:

https://www.theurbandeveloper.com/aquarevo-release-proves-sustainability-demand/

http://aquarevo.villawoodproperties.com.au/community/aquarevo

https://www.oliverhume.com.au/personal/project/192-aquarevo

http://www.smh.com.au/business/property/innovative-aquarevo-sustainable-estate-targets-major-water-savings-20160209-gmpdyo.html

http://southeastwater.com.au/CurrentProjects/Projects/Pages/Aquarevo.aspx

Sounds like a superb topic, and I like that this is a UK project.  Having had some of the worst pipe leakage rates globally in the UK due to complacency over rainfall and groundwater levels, and only recent efforts to start addressing this (and typically being a culture that is very casual about water waste as we are), this is a positive signal, thanks for sharing.