Section 29 As to the expence of maintaining sewers, &c.

The expence of maintaining and cleaning all sewers vested in the commissioners, and all other expences connected with such sewers not herein-before provided for, or which may not be fully defrayed by the special sewer rates, shall be defrayed by general sewer rates to be levied as herein-after provided on the occupiers of all lands and buildings within the drainage district in which such sewers are severally situated.