Sustainable San Mateo County (SSMC) Share: Non Profit Sustainable San Mateo County (SSMC) Visit Website 3182 Campus Drive, #153 San Mateo, CA 94403 (650) 918-1992 LinkedIn Facebook About Map About Our mission is to drive impactful action on economic, environmental and social equity issues that leads to sustainable practices and improves the long-term health of San Mateo County. What's Nearby? Distance: 5 10 15 20 25 50 mi.