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Buckinghamshire Council in the UK is giving low-income households four-minute shower timers to help them conserve water and energy.
https://uk.movies.yahoo.com/council-issuing-4-minute-shower-113000329.html?
Check out this Wi-Fi-controlled shower timer shut-off valve!
I found one on eBay!
https://www.ebay.com/itm/115791732474
A #showerheadtimer is an excellent idea! Billions of gallons of water are wasted every year due to long showers.