1. mmwd1013i1.pptx/1 Hormones, Pharmaceuticals, and Personal Care Products (CECs) in Water October 20, 2015 Andrew Salveson asalveson@carollo.com

2. mmwd1013i1.pptx/2  1993 - UC Davis graduate research of CECs in California water supplies  1998 – Led DSRSD water quality analysis for potable reuse  2002 to Present – Began a series of research grants on potable water reuse, now totaling >$4M in research  2014 to Present – Led the potable water reuse treatment evaluation for the SCVWD  2014 to Present – Led the permitting work for Oxnard’s potable water reuse program  2014 to Present –WateReuse Research Foundation Research Advisory Committee  2014 to Present –National Water Research Institute’s Expert Panel for potable water reuse guidelines  2014 to Present –National Water Research Institute’s Expert Panel for potable water reuse regulations in New Mexico  2014 to Present – Led the public health analysis of the Big Spring Texas Direct Potable Water Reuse Facility  2015 to Present – Process lead for the implementation of potable water reuse for the City of Los Angeles  2015 to Present–World Health Organization expert panel to develop international guidelines for potable water reuse

3. mmwd1013i1.pptx/3 OrganizationConfidence in the Safety of Potable Water Reuse? State of California Division of Drinking Water (formerly CDPH) Yes, formal regulations finalized in 2014 National Research Council Yes, 2012 report documents safety of potable water reuse and demonstrates comparative safety of potable reuse to conventional water supplies California Medical Association Yes, CMA demonstrates support for potable reuse in 2012 Texas Commission on Environmental Quality Yes, multiple approved projects based upon a case by case analysis Arizona, Virginia, Colorado, New Mexico, etc. Yes, many states have potable reuse projects safely producing water based upon different regulatory approaches Properly Engineered Potable Water Reuse is Supported by National Health Experts

4. mmwd1013i1.pptx/4 California Potable Water Reuse Projects Current –Groundwater Replenishment System –Montebello Forebay (Los Angeles) –West Basin MWD (Los Angeles) –Water Replenishment District –Inland Empire Utilities Agency –Cambria Near Term (2016-2020) –Santa Clara Valley Water District –Oxnard –City of Los Angeles (expansion) –Metropolitan Water District –Padre Dam –San Diego

5. mmwd1013i1.pptx/5 Potable Water Reuse Wastewater Treatment Urban Water Use Water Treatment Environmental Buffer Advanced Water Treatment

6. mmwd1013i1.pptx/6 In Response to Board Concerns, Carollo and SqCWD Staff Compiled a Detailed Literature Review of CECs in Water and in Potable Water Reuse Projects

7. mmwd1013i1.pptx/7 Potable Water Reuse Projects in California Must Meet Extensive Water Quality Criteria MCL – maximum contaminant level

8. mmwd1013i1.pptx/8 Potable Water Reuse Projects in California Must Meet Extensive Water Quality Criteria MCL – maximum contaminant level NL – notification level

9. mmwd1013i1.pptx/9 Potable Water Reuse Projects in California Must Meet Extensive Water Quality Criteria MCL – maximum contaminant level NL – notification level ug/L – microgram per liter ng/L – nanogram per liter

10. mmwd1013i1.pptx/10 National Research Council (2012) Documents Margins of Safety for CECs

11. mmwd1013i1.pptx/11 Potable Water Supplies Are Not Pure, but Properly Engineered Treatment Makes Them Safe

12. mmwd1013i1.pptx/12 Per California Regulations, Potable Reuse Projects Have Multiple Barriers for Public Health Protection

13. mmwd1013i1.pptx/13 CECs are Consistently Found in Raw Wastewater and, to a lesser extent, in Treated Wastewater

14. mmwd1013i1.pptx/14 Reverse Osmosis removes salts, organic carbon, and the vast majority of CECs

15. mmwd1013i1.pptx/15 Final Product Water from Potable Reuse Treatment is Equal or Higher Quality Than Conventional Water Supplies

16. mmwd1013i1.pptx/16 Final Product Water from Potable Reuse Treatment is Equal or Higher Quality Than Conventional Water Supplies

17. mmwd1013i1.pptx/17 Potable Reuse Public Health Analysis Big Spring Texas

18. mmwd1013i1.pptx/18 Potable Reuse Public Health Analysis Big Spring Texas

19. mmwd1013i1.pptx/19 Fluorescence Images Tell a Good Story Effluent RO Permeate Moss Creek Lake

20. mmwd1013i1.pptx/20 Reverse Osmosis Achieves Robust Removal of Trace Organics (Pharmaceuticals etc.)

21. mmwd1013i1.pptx/21 Ultraviolet Light Advanced Oxidation Finishes the Job

22. mmwd1013i1.pptx/22 Purified Water Quality Much Better than Conventional Water Supply

23. mmwd1013i1.pptx/23 Purified Water Quality Much Better than Conventional Water Supply

24. mmwd1013i1.pptx/24 The Story is similar for Nitrosamines…

25. mmwd1013i1.pptx/25 … and Estrogens…

26. mmwd1013i1.pptx/26 … and Perfluorinated Chemicals…

27. mmwd1013i1.pptx/27 Properly Engineered Potable Water Reuse Systems Produce a High Quality Water that is Protective of Public Health Past, current, and ongoing studies continue to look, and look again, at the safety of our water supplies. As new concerns are raised, the engineering community works to understand and address those concerns. The Division of Drinking Water (formerly CDPH) is dedicated to the protection of water quality. DDW regulations are designed to protect public health with orders of magnitude of safety barriers.

28. mmwd1013i1.pptx/28 Thank You for Listening