§ Mr. Leeasked the Secretary of State for the Environment what percentage of water consumed annually in the United Kingdom derives from rivers; what percentage from cisterns; and what percentage derives from other sources.
§ Mr. MarksThe distribution of the surface water sources percentages between rivers and impounding reservoirs is not readily available. In the public sector in 1975 62.5 per cent. of water supplies were derived from surface water sources and 37.5 per cent. from underground. In the case of non-statutory abstractors the values were 93.5 per cent. and 6.5 per cent. respectively.