My Lords, I thank the noble Lord for moving the amendment, which has crept into our Bill. While the aims behind the amendment are laudable and understandable, we consider that the proposed amendment to Ofwat’s duties is probably unnecessary. It duplicates Ofwat’s existing duties, which is not in keeping with the Government’s principles for economic regulation. Ofwat already has statutory duties requiring it to protect the interests of existing and future customers. It is already required to ensure that water and sewerage companies are able to finance their functions, which include a statutory requirement to provide an adequate water and sewerage service to all premises.
The statutory water resource management planning process requires water companies to set up plans for managing the supply-demand balance over the next 25 years. This must be submitted to the Secretary of State at Defra and must take explicit account of projected population on housing growth. In making price determinations, Ofwat must take account of the published water resources management plans. Furthermore, Ofwat is already under a statutory duty to carry out its functions in a manner best calculated to contribute to the achievement of sustainable development.
The requirement to provide guidance on these matters also duplicates existing provisions. The Government have already published in draft their new statutory guidance to Ofwat—the strategic policy statement. This makes it clear that, in assessing the costs and benefits of supply-demand options, the focus should be on the best overall value in terms of long-term resilience rather than a least cost approach for the short term. This guidance also emphasises the central role of the water industry in enabling the development required to support economic growth and to meet the housing needs of the growing population.
All investment in water and sewerage services is ultimately paid for by the customer through their bills. Since privatisation in 1989, the stable regulatory framework for the water sector has enabled companies to attract more than £108 billion in low-cost investment. This investment is used to upgrade water and sewerage infrastructure, to improve customer service and to improve environmental standards. As the noble Lord has said, between 2010 and 2015, £22 billion will be invested, including ensuring that supplies are available for new and existing customers.
I hope that I have provided the reassurance that the noble Lord seeks in his amendment that there is proper investment and proper consideration of future housing growth, in particular, in the plans of Ofwat and the water bodies.