Takeaways from Imagine H2O’s Water Efficiency Ideation Workshop – August 20, 2009
Wednesday, August 26th, 2009
Current water crisis is impacting consumers:
- Arnold Schwarzenegger, governor of California, has proposed 20% reduction in urban per capita use by 2020 (http://www.swrcb.ca.gov/water_issues/hot_topics/20×2020/index.shtml)
- EBMUD has instituted 10% voluntary rationing in 2009
- Sonoma County has banned use of sprinklers for frost protection (http://www.napawatersheds.org/news.php?display=1&oid=22493)
Opportunities exist in water efficiency:
- In drought, utilities’ budget for water efficiency can increase 30-100% e.g. EBMUD typically spends $4-5M per year on water efficiency. Last year the budget doubled.
- 19% of state’s electricity use associated with water
- Severe underinvestment in water infrastructure (EBMUD has 4000 miles of pipe and replace 7-10 miles and 10,000 meters annually)
- Recommended History Channel’s “Crumbling of America” program
Current water efficiency purchases:
- Agriculture (Nick Frey, Sonoma County Winegrape Commission)
- Drip irrigation systems
- Soil moisture sensors
- Weather stations
- Industrial (Anne Jackson, PG&E)
- Smart meters for irrigation
- Lo flow/no flow toilets
- Faucet aeration systems
- Commercial (Anthony Ravitz, Google)
- Water efficient plumbing fixtures
Greatest needs:
- Agriculture (Nick Frey, Sonoma County Winegrape Commission)
- Technology that delivers timely information
- Industrial (Anne Jackson, PG&E)
- Technology to optimize cooling for solar thermal systems
- Issue: wet cooled systems more economic but require water in often arid environments
- Technology to optimize cooling for solar thermal systems
- Commercial (Marty Laporte, Stanford)
- Software integration for data collection
- Commercial (Anthony Ravitz, Google)
- Technology that offers multiple benefits e.g. water and energy efficient
- Consumer (Richard Harris, EBMUD)
- Automated water meter reading technology
- Software that integrates water use data
Other needs mentioned:
- Commercial (Marty Laporte, Stanford)
- “Hard-fixes” that don’t require ongoing behavior change e.g. “Landscape contractor”-proof irrigation controllers, Watermiser system on autoclaves/sterilizers
- “Lego-block” modules for efficient irrigation systems and controllers
- Ways to reuse reverse osmosis reject water (relevant to biotech and semiconductor industries)
- Commercial (Anthony Ravitz, Google)
- “Landscape contractor”-proof irrigation controllers
- No-flow urinals without the “expensive cartridge” syndrome
- Cost effective retrofit options for existing buildings
- Industrial (Anne Jackson, PG&E)
- Real-time water use monitors
- Consumer (Richard Harris, EBMUD)
- Cooling towers
- Process water
- Medical waste
- Food processing
- Hospitality
- Noted that indoor plumbing, outdoor irrigation for residential markets are well-served
Submitted by Gypsy Achong
