# Flood and Water Management Act 2010, Paragraph 1


(1) In this Schedule “drainage system” means a structure designed to receive rainwater except—
(a) a public sewer, or
(b) a natural watercourse.
(2) The reference to a structure includes a reference to—
(a) any part of an existing or proposed structure, and
(b) any feature or aspect of a design that is intended to receive or facilitate the receipt of rainwater.
(3) “Public sewer” has the meaning given by section 219(1) of the Water Industry Act 1991.
(4) “Natural watercourse” means a river or stream.

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Source: https://www.legislation.gov.uk/ukpga/2010/29/schedule/3/paragraph/1 (the official version)
Page: https://openlegislation.uk/flood-and-water-management-act-2010/schedule-3/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.