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A true measure of leakage

Leakage is affected by the weather, especially in cold winters, and so may rise or fall from one year to the next. Nevertheless the overall trend in leakage in England and Wales over the past ten years has been continuously downward.

Six of the ten water and sewerage companies achieved their lowest ever leakage levels in 2012-13. The other four all achieved their second lowest levels in that year, having achieved their lowest ever levels in the previous year.

Of the nine water only companies, five achieved their lowest ever leakage levels in 2012-13. The other four all achieved their second lowest levels in that year, having achieved their lowest ever levels in the previous year.

How water companies measure leakage

Sarah Mukherjee