(1) All service-pipes laid in the ground shall have a minimum clear cover of 400 millimeters.

(2) No person shall lay or install or make use of any pipe which is to be supplied with water by the local authority through, in or into any sewer, drain, ashpit, manure-hole or other place where, in the event of the of the pipe becoming unsound (and such unsoundness being liable to escape immediate detection), the water conveyed through such pipe might be polluted or might escape without being detected:

Provided that, where it is impracticable to lay or install any pipe otherwise than in the manner afore-said, the part of such pipe so laid or installed shall be carried through a cast-iron or other approved tube or box of sufficient length and strength, and of such construction, as will, in the opinion of the local authority, afford proper protection to the pipe lying within it, and in such manner as will render any leakage or waste from such manner as will render any leakage or waste from such pipe readily perceptible.

(3) All service-pipes except those laid in the ground shall be securely fixed at intervals, to the satisfaction of the local authority, to the wall or other rigid structure along which they pass.

(4) All stand-pipes or other pipes projecting above the ground and not otherwise secured shall be securely fixed to a stake securely driven into the ground, or by other means approved by the local authority, in such a manner as to prevent undue movement of such stand-pipes or other pipes.