Proprietors of business establishments will be permitted to connect the places by larger pipes with hydrants and hose couplings, with the water mains, for fire mains or sprinkler systems, at their own expense, upon application to the Board of Public Works, and under the supervision of its Superintendent or his or her agents, and will be allowed to use the water in the mains or systems for fire purposes only.
(1972 Code, § 3-422)