Bristol Channel Mr. Speller To ask the Secretary of State for the Environment if he will detail in percentage terms water pollution in the Bristol channel for the different sorts of pollution and polluter. Mr. Heathcoat-Amory It is not possible to quantify water pollution in the Bristol channel in percentage terms. Details of discharges to controlled waters, as defined under the Water Act, are held on the public registers maintained by the National Rivers Authority. Details of licences issued for waste disposal at sea are held on the public register of the Ministry of Agriculture, Fisheries and Food. Further information on water quality including the quality of fish and shellfish is available in the reports compiled by MAFF in the "Aquatic Environment Monitoring" series. These are available in the Library of the House.