Scotland's national football stadium has reduced its water consumption by 35% in the space of 15 months after installing monitoring equipment which identified anomalies and spikes in water usage.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/football-stadium-tracks-water-use-saves-%C2%A340000
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/edie-uk
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-supply
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-management
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scotland
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/european-union-eu