The hon. Gentleman is absolutely right to highlight potential risks from sewage pollution in water. If the Environment Agency can demonstrate a problem, it can issue a notice within 3 nautical miles of an area of operation. Since 1994, all new recreational craft should be fitted with holding tanks that allow managed discharge. Larger vessels are covered by maritime conventions. If there are specific issues in his area and he would like to write to me about them, I will get him a more detailed answer from the agency.