The Millenium Dome - as was - "used rainwater - grey water - to flush toilets and for cooling. Reedbeds outside cleaned the water before its reuse".
Apparently - according to a mailing from email@example.com they've now gone. "Rain now runs to profligate waste. Reedbeds neglected and sure to go. Other energy saving systems ncluding local power generation have gone too. Why I asked?"
Too expensive - was the answer.
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