The North of Scotland Water Authority's average bill is lower than those of companies with similar geographical and demographic characteristics (i.e. largely rural areas with long coastlines, sparsely populated), such as South West and Dwr Cymru.Water and sewerage service providersAverage combined domestic water and sewerage bills, 2000-01 (rounded to nearest £)££Anglian251East of Scotland184Dwr Cymru266North of Scotland237North West222West of Scotland169Northumbrian198Severn Trent198South West314Southern239Thames 187Wessex231Yorkshire209English & Welsh Industry Average*219Scottish Industry Average189Sources: English and Welsh data provided by Ofwat (reference - Ofwat press...