114(1)Section 142 of that Act (powers of undertakers to charge) shall be amended in accordance with the following provisions of this paragraph.E+W+S
F1(2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(3)After subsection (3) (restriction on charging by agreement for trade effluent functions) there shall be inserted—
“(3A)The power of a sewerage undertaker to charge, by virtue of subsection (1) above, for any services provided in the course of carrying out its duty under section 101A(1) above shall be exercisable only by or in accordance with a charges scheme under section 143 below.”