This section applies to any obligation to which any person was subject, before the commencement of this Act, by reason of tenure, custom, prescription or otherwise, except an obligation under an enactment re-enacted in this Act or the Water Resources Act 1991.
If any person—
the drainage board concerned may serve a notice on that person requiring him to do the necessary work with all reasonable and proper despatch.
Subject to section 107(2) of the Water Resources Act 1991, the powers conferred by this section shall not be exercisable in connection with a main river, the banks of such a river or any drainage works in connection with such a river.
If any person fails, within seven days, to comply with a notice served on him under subsection (2) above by the drainage board concerned, the board may do all such things as are necessary for that purpose.
Any expenses reasonably incurred, in the exercise of their powers under this section, by the drainage board concerned may be recovered from the person liable to repair.
Subject to section 8 above, references in this section to the drainage board concerned—
Lead local flood authority" has the meaning given by section 6 of the Flood and Water Management Act 2010.