Water Bill

My Lords, I apologise that I was not able to play a large enough part in Committee. However, I wonder whether the noble Lord, Lord Whitty, can tell me what Ofwat does not have. My understanding, having had earlier briefings from Ofwat, was that it already had a sustainable development plan duty, which the Bill will further introduce and strengthen. What is missing from the responsibilities that Ofwat already has? I am a little confused.