The Board of Supervisors finds that:
(a) The City's potable Public Water System must be protected from contamination by the implementation of a cross-connection control program.
(b) The State of California requires the City, as the public water supplier, to implement the cross-connection control program, and allows implementation of the program by the public water supplier or by means of contract between the public water supplier and the local health agency.
(c) Under the Charter, the authority and responsibility for managing and operating the City's Public Water System is vested in the San Francisco Public Utilities Commission. The City's local health agency, the Department of Public Health, should cooperate with the San Francisco Public Utilities Commission in implementing the City's cross-connection control program.
(d) The dangers to public health and safety posed by the potential contamination of the City's potable water system warrant the imposition of local regulations and standards in excess of those required under State law.