On every service pipe laid after the commencement of this Act the Chairperson, shall, and every service pipe laid before such commencement, Chairperson may, fit a stopcock enclosed in a cover box or a pit of such size as may be reasonably necessary.

Every stopcock fitted on a service pipe after the commencement of this Act shall be placed in such position as the Chairperson deems most convenient:
Provided that -