(1)A [F1water authority] may by bye-laws make such provision as respects any stream or part of a stream in their area as appears to them expedient—

(a), (b). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F2

(c)for prohibiting or regulating the keeping or use on the stream of vessels provided with sanitary appliances from which polluting matter passes or can pass into the stream.

A [F1water authority] in exercising the powers conferred by this subsection to make bye-laws for any stream or part of a stream shall have regard to the character and flow of the stream and to the extent to which the stream is or may in the future be used for industrial purposes, fisheries, water supply, agriculture, transport or navigation, . . . F3

(2)–(5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F2

(6)Before making bye-laws under this section as respects any stream or part of a stream, a [F1water authority] shall give reasonable notice of their intention to do so to any body of persons designated to them for this purpose by the Minister as being representative of a class of persons having a material interest in the waters of the stream or of a part of it to which the bye-laws are to relate.

(7)Any person contravening bye-laws made by virtue of paragraph (b) or (c) of subsection (1) of this section shall be liable on summary conviction to a fine not exceeding [F4level 3 on the standard scale] and, where a contravention of bye-laws made by virtue of the said paragraph (c) is continued after a person has been convicted thereof, that person shall be guilty of a further offence and shall be liable on summary conviction to a fine not exceeding five pounds for every day on which the contravention is so continued.