California Code, Health and Safety Code - HSC § 5009

Whenever any community in the district is provided with a sewerage system under this chapter the governing body having jurisdiction over that community shall declare the further maintenance or use of cesspools or other local means of sewage disposal to be a public nuisance and shall require all buildings inhabited or used by human beings to be connected with the sewerage system, within ninety days from completion, if the buildings to be served thereby are within one hundred feet of the system.