Any drought order which-
may include provision for prohibiting or imposing limitations on the taking of water from the inland navigation or for the suspension or modification of any obligation to which a navigation authority are subject as respects the discharge of water from the inland navigation.
A prohibition or limitation by or under a drought order on the taking of water from any source may be imposed so as to have effect in relation to a source from which a person to whom the prohibition or limitation applies has a right to take water whether by virtue of an enactment or instrument, an agreement or the ownership of land.
Where a drought order made on the application of a water undertaker confers power on the appropriate agency—
the appropriate agency shall exercise that power in such manner as will ensure, so far as reasonably practicable, that the supplies of water available to the water undertaker are not seriously affected.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where—
the sewerage undertaker may so modify any consents or agreements relating to the discharge by other persons of trade effluent as to enable it to comply with any requirements or conditions imposed on it by or under the order with respect to discharges from sewers or works of the undertaker.
In this section—
"compensation water" means water which a water undertaker or the appropriate agency is under an obligation to discharge— and
(a)in accordance with the provisions of a licence under Chapter II of this Part into a source of supply; or
(b)under any local statutory provision, into any river, stream, brook or other running water or into a canal;
"inland navigation" includes any canal or navigable river.