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Résumé :
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After a dry winter the SE is already being threatened with water restrictions. In the UK a survey in 2004 indicated that seven new reservoirs were planned and planners were reviewing plans for a national grid. Yet 30 years ago the public sector predecessors of Thames Water concluded that repairing leaking mains and fitting new valves to toilet cisterns would be cheaper and as effective as building a new reservoir. We lose between 20% and 30% of water before it reaches the customer through leaking mains, but water engineers are fixated on large schemes rather than controlling the demand side or managing water more effectively.
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