Sewage and rain water to be separate

For the purpose of effectual drainage of any premises in accordance with the provisions of this chapter, it shall be competent for the Municipal Commissioner or the Executive Officer, or any other agency authorized by him in this behalf, to require that there shall be one drain for sewage, offensive matter and polluted water and an entirely separate drain for rain water or unpolluted sub-soil water or both rain water and unpolluted sub-soil water, each emptying into separate municipal drains or other suitable places.