Notwithstanding anything to the contrary in the principal Act or in any other Act, any rate made and levied on lands in any subdivision in respect of any expenditure incurred in installing and operating pumping schemes, and administration and maintenance expenses, and interest in respect thereof, may be made and levied on an acreage basis.”

The repeal of any enactment by this Act shall not affect the liability of any person for the payment of any rate made and levied under any such enactment before the commencement of this Act, and all such rates shall continue to be owing and shall be deemed to be owing to the Board, which shall have the same powers in respect thereof as if those rates had been made and levied by the Board under this Act at the dates when the same were respectively made and levied.”