To ask the Secretary of State for Environment, Food and Rural Affairs what measures Ofwat has put in place to improve the reliability of its consumption and leakage data. (171754)

Ofwat has led a review of their approach to leakage regulation and target setting. The review looked at variation in per capita consumption, inclusion of externalities in the leakage calculation and alternative approaches to the economic level of leakage. Ofwat expects the findings to lead to improvements at the next price review in 2009.