Transaction in Own Shares

Pennon Group PLC
10 August 2007


Pennon Group Plc

10 August 2007


Transaction in Own Shares


Pennon Group Plc announces that it has today purchased through Merrill Lynch
International 280,000 ordinary shares at a price of 592.0119 pence per share.

The purchased shares will all be held in treasury.  Following the above purchase
and non-cancellation of such equity shares, Pennon Group Plc will hold 2,971,909
ordinary shares in treasury and a total of 352,192,365 ordinary shares will be
in issue (excluding shares to be held in treasury).




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