2. Water Efficiency and Reuse Facebook’s Menlo Park Campus Lauren Bonar Swezey Global Sustainability and Outreach Manager

3. Campus Water Use: The Challenge Growth! Building use Onsite meal prep (three meals/day) Cleaning Outdoor use Ongoing drought

4. Water efficiency The Low Hanging Fruit

5. Goal #1: Reduce Outdoor Water Use Eliminated lawn at Classic Campus Courtyard Sports field Campus entry Planted natives Utilize new power washing system Uses recycled water Saves15k gal/week

6. Green roof: 90% natives Replacing lawn with Natives at Classic Campus

7. BIG Savings Achieved 55% reduction in outdoor water use Q3 2014 vs.Q3 2015

8. Goal #2: Reduce Indoor Water Use Dishwasher retrofit Hobart dishwashers each save 1.5m gallons annually Kitchen water audit Sub-metering for all kitchens Added High efficiency spray nozzles Efficient steamers and woks Extra low flow aerators Best practices by kitchen staff Achieved 22% reduction

9. Goal #3: Shift our Water Footprint Reusable plates in all cafés 1.3 gallons of water vs. 0.15 gallons Shifting to onsite composting

10. Implement Onsite Composting Installing 10 ton Anaerobic digester Byproduct: Graywater Produces 1,400- 2,000 gals/daily REUSE for grinding and landscape use

11. Water Reuse The BIG Solution

12. Treat and reuse for toilet flushing and irrigation Drain and Fill Constructed Wetland

13. MBR System Membrane bioreactor Screening Biological treatment Ultrafiltration: particles, bacteria and viruses Ultraviolet light disinfection Chlorination

14. Permitting and approval Meetings began in 2015 City permitting City of Menlo Park County permitting and support San Mateo County Health Department County Supervisors (2) State permitting Regional Water Quality Control Board Local office: SF Bay RWQCB Division of Drinking Water (DDW)