To ask the Scottish Executive what proportion of Scottish Water’s leakage rates were of all the water that it treated in (a) 2003-04, (b) 2004-05, (c) 2005-06, (d) 2006-07 and (e) 2007-08 to date. The information is as follows: Distribution Input (Treated Water Supplied to Scottish Water''s Networks) 2002-03 ...