City of Yorba Linda staff responds to service requests during regular business hours, Monday - Thursday 7:30 a.m. - 5:30 p.m. and alternate Fridays from 8 a.m. to 5 p.m. To report emergency-related services (i.e. broken sprinkler, tree-down, water main breaks, bees, down traffic signals, etc.) outside of regular business hours, please contact the Orange County Sheriff’s Department Dispatch Line at 714-647-7000, who will then contact City staff. Please be advised that MyCivic 311 is not to be used for emergencies. For urgent matters that require immediate attention or a police response, call 9-1-1.