Schedule 2
| (1) | (2) | (3) |
|---|---|---|
| River Purification Board | Region | Proportion (%) |
| Clyde | Strathclyde | 99.8 |
| Central | 0.2 | |
| Forth | Lothian | 55.0 |
| Central | 20.0 | |
| Fife | 21.0 | |
| Strathclyde | 3.5 | |
| Tayside | 0.5 | |
| Borders | 0.0 | |
| Highland | Highland | 92.5 |
| Grampian | 7.5 | |
| North East | Grampian | 98.0 |
| Highland | 2.0 | |
| Solway | Dumfries and Galloway | 98.0 |
| Strathclyde | 1.5 | |
| Borders | 0.5 | |
| Tay | Tayside | 87.0 |
| Fife | 11.3 | |
| Grampian | 1.5 | |
| Central | 0.2 | |
| Tweed | Borders | 97.5 |
| Strathclyde | 2.5 | |
| Lothian | 0.0 |