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Mr. Wigley
asked the Secretary of State for Wales what is the percentage of water lost through leakage in the Welsh water authority area for the last available year; and if he will give a regional breakdown of that figure.
Mr. Wyn Roberts
The estimated percentage of unaccounted for potable water at October 1981 in the Welsh water authority area was 35 per cent. The breakdown by division is given in the table.
| Dee and Clwyd | 36 |
| Gower | 30 |
| Gwynedd | 45 |
| Taff | 30 |
| Usk | 45 |
| West Wales | 34 |
| Wye | 34 |