125Specific exemptions from water resources charges
(1)No charges, other than those for the purpose of recovering administrative expenses attributable to the exercise by the Authority of its functions in relation to the application for the licence, shall be levied in respect of water authorised by a licence to be abstracted for use in the production of electricity or any other form of power by any generating station or apparatus of a capacity of not more than five megawatts.
(2)No charges shall be levied in respect of water authorised by a licence to be abstracted from underground strata, in so far as—
(a)the water is authorised to be abstracted for use for agricultural purposes other than spray irrigation; and
(b)the quantity of water authorised to be abstracted from the strata in any period of twenty-four hours does not exceed twenty cubic metres in aggregate.