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Wholly H2o’s
        February 2011 Forum
CA Rainwater Harvesting for Indoor Use:
       Maximizing the Potential

                Neal Shapiro
            City of Santa Monica
 Office of Sustainability & the Environment
              February 7, 2011
       S.F. Public Utility Commission
Presentation Outline

1.   Rainwater Catchment Around the World, Country
2.   Rainwater Catchment in California Water Code
3.   Examples of local US and CA RWH for Indoor Uses
4.   Southern California RWH Effort
5.   LA County Public Health RWH Policy
6.   State RWC Effort
7.   6 Main Issues
1. Rainwater Catchment Around the World, Country


     •  Historically, used in the Middle East and
        by the Romans, who developed intricate
        and extensive systems to move
        rainwater.
     •  In Israel, I’ve been in underground
        cisterns carved out of rock.
     •  Today, RWH is common in Europe, Asia,
        Australia, the Caribbean, and Hawaii.
•  In the United States, a range of
   experience exists from terrific programs
   to embryonic.
•  26 examples, certainly not complete,
   Neal’s legislative matrix, includes indoor
   and outdoor uses, laws, policies,
   manuals, states, cities, counties, trade
   groups, approved, under consideration
2. Rainwater Catchment in California’s Water Code –
definitions of our water resources


    •  Potable Water – assume defined
    •  Recycled Water – Title 22
    •  Gray/Grey Water – Appendix G
    •  Rain Water
    •  Storm Water
    •  Dry Weather Runoff
3. Examples of local US and CA RWH for Indoor Uses
Examples of local US and CA RWH for Indoor Uses
Examples of local US and CA RWH for Indoor Uses
4. Southern California Effort for RWH
Southern California Effort for RWH
Southern California Effort for RWH
5. LA County Public Health Policy – RWH Policy
LA County Public Health Policy
LA County Public Health Policy
6. State Effort
2011
State Effort
2011
7. Main Challenges of Concern, Debate, Resolution

      Terminology – capture, harvest,
          catchment; use v. reuse
      Indoor and/or Outdoor Applications?
      Potable Applications?
      Catchment Surfaces and
          Pollutants of Concern.
      Unions, Plumbers, Landscape
          Contractors.
      Backflow Prevention Devices: Air
          Gap or RPZ or both?
      Treatment – Disinfection: Yes or
          No and to what level?
California;  Rainwater Harvesting for Indoor Use Maximizing the Potential
California;  Rainwater Harvesting for Indoor Use Maximizing the Potential

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California; Rainwater Harvesting for Indoor Use Maximizing the Potential

  • 1. Wholly H2o’s February 2011 Forum CA Rainwater Harvesting for Indoor Use: Maximizing the Potential Neal Shapiro City of Santa Monica Office of Sustainability & the Environment February 7, 2011 S.F. Public Utility Commission
  • 2. Presentation Outline 1. Rainwater Catchment Around the World, Country 2. Rainwater Catchment in California Water Code 3. Examples of local US and CA RWH for Indoor Uses 4. Southern California RWH Effort 5. LA County Public Health RWH Policy 6. State RWC Effort 7. 6 Main Issues
  • 3. 1. Rainwater Catchment Around the World, Country •  Historically, used in the Middle East and by the Romans, who developed intricate and extensive systems to move rainwater. •  In Israel, I’ve been in underground cisterns carved out of rock. •  Today, RWH is common in Europe, Asia, Australia, the Caribbean, and Hawaii.
  • 4. •  In the United States, a range of experience exists from terrific programs to embryonic. •  26 examples, certainly not complete, Neal’s legislative matrix, includes indoor and outdoor uses, laws, policies, manuals, states, cities, counties, trade groups, approved, under consideration
  • 5. 2. Rainwater Catchment in California’s Water Code – definitions of our water resources •  Potable Water – assume defined •  Recycled Water – Title 22 •  Gray/Grey Water – Appendix G •  Rain Water •  Storm Water •  Dry Weather Runoff
  • 6.
  • 7. 3. Examples of local US and CA RWH for Indoor Uses
  • 8. Examples of local US and CA RWH for Indoor Uses
  • 9. Examples of local US and CA RWH for Indoor Uses
  • 10. 4. Southern California Effort for RWH
  • 13. 5. LA County Public Health Policy – RWH Policy
  • 14. LA County Public Health Policy
  • 15. LA County Public Health Policy
  • 18. 7. Main Challenges of Concern, Debate, Resolution   Terminology – capture, harvest, catchment; use v. reuse   Indoor and/or Outdoor Applications?   Potable Applications?   Catchment Surfaces and Pollutants of Concern.   Unions, Plumbers, Landscape Contractors.   Backflow Prevention Devices: Air Gap or RPZ or both?   Treatment – Disinfection: Yes or No and to what level?