Subject to the following provisions of this section and to section 164 below, where the appropriate agency—
the appropriate agency may cause the water in any relevant pipe or in any such reservoir, well, borehole or other work to be discharged into any available watercourse.
Nothing in this section shall authorise any discharge which—
If the appropriate agency fails to take all necessary steps to secure that any water discharged by it under this section is as free as may be reasonably practicable from—
it shall be guilty of an offence and liable, on summary conviction, to a fine not exceeding level 3 on the standard scale.
In this section—
"railway company" means the British Railways Board, Transport for London or any subsidiary (within the meaning of the Greater London Authority Act 1999) of Transport for London, or any other person authorised by any enactment, or by any order, rule or regulation made under any enactment, to construct, work or carry on a railway; and
"relevant pipe" has the same meaning as in section 159 above.