Founded in 1982, Professional Maintenance Systems is a full service janitorial company. Our 750+ direct employees maintain over 18 million square feet of facilities throughout San Diego, Riverside, San Bernadino, Orange and Los Angeles Counties. We are proud to be CIMS with Honors and CIMS Green Building Certified. We are also a certified Women's Business Enterprise (WBE) through the WBENC and CPUC. Our comprehensive safety program has virtually eliminated work-related injuries and lowered our Experience Modification Rate (EMR) to 67%, the lowest in the state of California for a janitorial company. We have years of experience maintaining: Corporate Headquarters Multi-Tenant Buildings Medical Buildings Clean Rooms Manufacturing Facilities High Security and Government Facilities Educational Facilities Fitness Centers