Q8: only reduce by 15% this sounds too low. Surely you should be aiming for a much higher reduction in combating leakages.
Q10 &11: Its only fair if Portsmouth Water wants to create a new reservoir in Hampshire that the water eventually from it is shared with the people of Hampshire.

Can Portsmouth Water have any sway with local councils that when developments of new housing are planned that ALL new houses/homes should have Water Butts instead of all rainwater going straight into the drains or soakaways. This would be beneficial for householders who would then possibly be more inclined towards saving this precious commodity.