§ Mr. Nicholas Wintertonasked the Secretary of State for the Environment if he will give a breakdown by region of the percentage of domestic dwellings supplied by (a) mains water and (b) mains sewerage in each of the last 10 years.
§ Sir George YoungThe available information relates to the percentage of the population in each water authority area in England and Wales where these services were supplied.
Percentage of population with mains water and mains sewerage Water authority Mains water* Mains sewerage 1978–79 1983–84 1978–79 1983–84 North West 99.1 99.1 97.0 97.0 Northumbrian 99.0 99.2 98.4 98.4 Severn Trent 99.2 99.2 96.0 96.4 Yorkshire 99.3 99.3 97.4 92.4 Anglian 98.9 98.9 91.6 91.5 Thames 99.9 100.0 97.6 97.8 Southern 99.5 99.6 94.9 95.4 Wessex 97.4 97.5 90.9 91.1 South West 92.4 94.7 86.8 87.0 Welsh 97.4 97.5 93.6 93.7 All authorities 98.2 99.0 95.6 95.7 * Excludes population resident in areas supplied by water companies.