Transaction in Own Shares

Pennon Group PLC
30 July 2007



Pennon Group Plc


30 July 2007



Transaction in Own Shares


Pennon Group Plc announces that it has today purchased through Merrill Lynch
International 29,780 ordinary shares at a price of 597.4908 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 2,283,228
ordinary shares in treasury and a total of 352,881,046 ordinary shares will be
in issue (excluding shares to be held in treasury).





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