No person, firm or corporation shall establish or permit to be established or maintain or permit to be maintained any connection whereby a private, auxiliary or emergency water supply other than the regular public water supply of the City enters the supply or distribution system of the City, unless such private, auxiliary or emergency water supply and the method of connection and use of such supply shall have been approved by the Director of Public Works and the Illinois Environmental Protection Agency.
(1987 Code § 26-61)