3(1)The power conferred by section 58 to make an Order in Council about a function so far as exercisable by a Minister of the Crown in relation to Wales includes power to make provision about a function so far as exercisable by a Minister of the Crown in relation to—
(a)a cross-border body, or
(b)subject to sub-paragraph (2), an English border area.
(2)An Order in Council under section 58 may only include provision about a function so far as exercisable by a Minister of the Crown in relation to an English border area if—
(a)the function relates to water resources management, water supply, rivers or other watercourses, control of pollution of water resources, sewerage or land drainage, and
(b)the Order in Council makes (or another such Order in Council has made) corresponding provision about the function so far as so exercisable in relation to a part of Wales adjoining England or the whole of Wales.
(3)This paragraph does not affect the power conferred by section 58 to make an Order in Council about a function so far as exercisable by a Minister of the Crown in relation to the whole or any part of Wales.