7. Drainage of existing building
Where it appears to a Sewerage Authority that a building or part of a building which was completed before the coming into operation of this Act and which is within the sewerage area coming under the jurisdiction of such sewerage authority, is without a satisfactory system of drainage as defined in section 8 hereof and that for the proper maintenance and preservation of public health and convenience such a system of drainage should be provided, then the Sewerage Authority may by notice, require the owner or the owners of such building or the owner or owners of the land upon which the building is constructed or both as the case may be to provide a satisfactory system of drainage for the building as defined in section 8 hereof and shall state in such notice the period of time within which such a system of drainage shall be completed ready for use.