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Mr. Canavan
asked the Secretary of State for Scotland what steps he is taking to seek to establish that no river, burn or subterranean water-course in central Scotland has been polluted by toxic wastes.
Mr. Ancram
The necessary provisions already exist. River purification boards have a statutory duty to exercise functions for the prevention of pollution of surface and underground waters, including control of the discharge of toxic wastes.
| Region | October 1985 | October 1984 | October 1983 | |||
| (a) 1984–85 | (b) 1983–84 and earlier | (a) 1983–84 | (b) 1982–83 and earlier | (a) 1982–83 | (b) 1981–82 and earlier | |
| London East | 101,833 | 34,134 | 101,885 | 22,575 | 147,030 | 24,705 |
| London North | 141,158 | 39,200 | 121,077 | 29,453 | 102,424 | 27,276 |
| London South | 163,217 | 46,114 | 101,248 | 32,990 | 114,509 | 29,192 |
| London West | 170,418 | 55,700 | 149,432 | 41,847 | 139,951 | 47,550 |
| Eastern Counties | 1,048,322 | 214,509 | 997,892 | 141,957 | 641,267 | 91,203 |
| Greater Manchester | 1,693,365 | 120,306 | 909,106 | 50,024 | 396,824 | 42,732 |
| North | 1,077,355 | 100,959 | 870,522 | 63,133 | 405,122 | 48,925 |
| North West | 1,062,451 | 111,183 | 904,883 | 45,653 | 461,854 | 36,362 |
| South East | 898,922 | 270,457 | 1,067,196 | 197,280 | 652,853 | 145,105 |
| South West | 622,182 | 88,151 | 560,746 | 46,511 | 337,243 | 35,106 |
| South Yorkshire | 1,298,899 | 179,257 | 1,331,240 | 101,208 | 669,630 | 78,121 |
| West Midlands | 1,804,155 | 283,228 | 1,443,733 | 145,232 | 725,715 | 64,509 |
| Wales | 242,035 | 47,144 | 395,144 | 34,143 | 173,855 | 20,208 |
| Scotland | 416,037 | 69,524 | 879,614 | 59,419 | 133,682 | 72,357 |
| Northern Ireland | 254,166 | 41,813 | 272,664 | 18,144 | 90,551 | 18,621 |