That is a scenario that nobody wants to see repeated. I hope my hon. Friend knows that I am championing his cause, as are the Government. Tackling the harm caused by sewer overflows into rivers, particularly chalk streams, is a top priority for the Government. That is why we established a storm overflows taskforce, made up of the Government, the water industry, regulators and environmental groups, which has set a long-term goal to eliminate harm from storm overflows. The group is considering the problems caused by infiltration, which my hon. Friend mentioned, and last month we announced plans to introduce legislation to address these things. We are moving on this.