Section 33

It shall be the duty of a board to conserve the fund established in pursuance of section 32 by so exercising and performing its functions and duties under this Act as to secure that the total revenues of the board are sufficient to meet all sums properly chargeable to their revenue account, including, without prejudice to the generality of that expression, provisions in respect of its obligations under section 34 and depreciation and interest on capital, taking one year with another.