s 4A Power of the Authority with respect to coal mine water discharge
(1) The Authority may take such action as it considers appropriate (if any) for the purpose of preventing, or mitigating the effect of, the discharge of water from a coal mine into or on to any land or into any controlled waters. (2) In this section and sections 4B , 4C and 4CA below— (a) “ controlled waters ” has the meaning given by section 104 of the Water Resources Act 1991; and (b) references to coal mines are to coal mines vested in the Authority.