11/7/2019 CA State Water Board Grant on Water Reuse: Introduction Thursday, November 7, 2019 1:00 – 2:30 pm ET 1 1 How to Participate Today Your Participation Open and close your control panel Join audio: • Choose Mic & Speakers to use VoIP • Choose Telephone and dial using the information provided Submit questions and comments via the Questions panel Note: Today’s presentation is being recorded and will be available shortly after today’s webcast 2 1
11/7/2019 Today’s Speakers Julie Minton Adam Olivieri, Ph.D. Jim Crook, Ph.D., PE Shane Trussell, Ph.D., The Water Research EOA, Inc. Environmental P.E., BCEE Foundation Engineering Consultant Trussell Technologies Jean Debroux, Ph.D. Brian Pecson, Ph.D., PE Kennedy Jenks Trussell Technologies 3 Agenda • Welcome and Introduction • Background of CA State Board and WRF Grant Investigations Julie Minton and Dr. Adam Olivieri • Pathogen Monitoring in Raw Wastewater Dr. Brian Pecson • Plant Reliability and Quantitative Microbial Risk Assessment Dr. Brian Pecson • Identification and Control of Chemical Peaks Dr. Jean Debroux and Dr. Shane Trussell • Q&A 4 2
11/7/2019 A Brief History of WRF Potable Reuse Research WateReuse Research Foundation: DPR Research Outcomes Initiative (2012‐2016) • DPR Expert Panel report • In response to CA legislation to • SWB Report to legislature Yes, determine “Feasibility of it is feasible to develop developing criteria for DPR” regulations for DPR • $6 million raised – Leveraged to $24 million • 34 projects funded that informed DPR Expert Panel 5 Recycled Water Grants from State Water Board Grant 1: $1.4M Grant 2: $3.1M • 5 projects recommended by the • 20 reuse research projects SWB DPR Expert Panel for recommended by the WRF’s Water developing DPR regulations in Reuse Advisory Committee and California SWB. • Agreement executed February • Agreement executed March 30, 28, 2018 2018 • Research being conducted Q4 • Research being conducted Q1 2019 2018 – Q4 2020 ‐ 2023 California Legislation – AB 574 (2017): Established deadline for DPR legislation of 2023 6 3
11/7/2019 SWB Grant 1: 5 DPR Research Projects Research addressing Pathogens Public Health Protection • DPR‐1. Quantitative Microbial Risk Assessment* • DPR‐2. Measure Pathogens in Wastewater* • DPR‐3. Collecting Pathogens in Wastewater During Outbreaks Research addressing Chemicals • DPR‐4. Treatment for Averaging Potential Chemical Peaks • DPR‐5. Low Molecular Weight Unknown Compounds *Co‐funded by Research implementation late 2018 – late 2020 Metropolitan Water District 7 7 SWB Grant 1: Research Oversight & Communication Coordinating Committee Oversees the program and each project CA SWB DDW • Adam Olivieri (EOA) • James Crook (Environmental Engineering Technical Advisor Consultant) Bob Brownwood • Bob Brownwood, DDW WRF • Claire Waggoner, DWQ Julie Minton, Project Director Technical Working Group (TWG) • Scientific experts overseeing the research • Develop Request for Proposals (if needed) • Select Research Teams • Conduct the work when no RFP DDW Technical Liaison WRF Project Manager Jing‐Tying Chao and Project Advisory Committee Research Team • Scientific engineers, experts, etc. conducting the work 8 8 4
11/7/2019 Background of CA State Board and WRF Grant Investigations Dr. Adam Olivieri 9 9 California’s Big Question Is it feasible to do potable reuse without an environmental buffer (DPR)? Division of Drinking Water State of California Expert Panel on DPR Can we do DPR safely? QUESTION: QUES TION: 10 5
11/7/2019 Expert Panel Findings on Direct Potable Reuse • CA State Expert Panel assessed DPR L P A N E P E R T E X O R T R E P F I N A L feasibility • Concluded it is feasible to create DPR DPR uniform regulations for DPR Evaluation of the Feasibility of Developing Uniform Water Recycling Criteria for Direct Potable Reuse • Expert Panel recommended 6 topics for further research California State Water Resources Control Board 11 State Water Board Conclusions on DPR I NVESTIGATION ON THE F EASIBILITY OF I NVESTIGATION ON THE F EASIBILITY OF D EVELOPING U NIFORM W ATER R ECYCLING C RITERIA D EVELOPING U NIFORM W ATER R ECYCLING C RITERIA • DDW concurred on feasibility of DPR FOR D IRECT P OTABLE R EUSE FOR D IRECT P OTABLE R EUSE STATE WATER RESOURCES CONTROL BOARD STATE WATER RESOURCES CONTROL BOARD • More information on research topics needed Report to the Legislature Report to the Legislature December 2016 December 2016 before regulations could be written In Compliance with Water Code Section 13563 In Compliance with Water Code Section 13563 “ The use of recycled water for DPR has great potential but it DPR DPR presents very real scientific and technical challenges that must be addressed to ensure the public’s health is reliably protected at all times .” – SWRCB 2016 STATE OF CALIFORNIA STATE OF CALIFORNIA Edmund G. Brown Jr., Governor Edmund G. Brown Jr., Governor • AB 574 requires DPR regulations by 2023 CALIFORNIA ENVIRONMENTAL PROTECTION AGENCY CALIFORNIA ENVIRONMENTAL PROTECTION AGENCY Matthew Rodriquez, Secretary Matthew Rodriquez, Secretary STATE WATER RESOURCES CONTROL BOARD STATE WATER RESOURCES CONTROL BOARD P.O. Box 100 Sacramento, CA 95812 P.O. Box 100 Sacramento, CA 95812 Homepage: http://www.waterboards.ca.gov Homepage: http://www.waterboards.ca.gov 12 6
11/7/2019 Potable Reuse In California 13 13 Research Related to Public Health Protection Pathogens Giardia Chemicals 14 7
11/7/2019 Research Related to Public Health Protection Pathogens Pathogen Monitoring Quantitative Microbial Risk Assessment Outbreak Monitoring Non‐Targeted Analysis Control of Source Control and Low Molecular Chemical Peaks Weight Compounds Chemicals 15 SWB DPR Research Projects (1 – 5 are WRF Grant projects) 1. Develop Probabilistic Analysis Tools for DDW to Assess Treatment Performance and Quantitative Microbial Risk 2. Collect Pathogen Data in Untreated Wastewater 3. Investigate Feasibility of Collecting Pathogens in Wastewater During Outbreaks 4. Evaluate Options to Reduce Potential Chemical Peaks 5. Investigate Feasibility of Analytical Methods for Non‐Targeted Analysis of Recycled Water with focus on Low Molecular Weight Compounds 6. Establish an enhanced source control program 16 16 8
11/7/2019 DPR‐1 Plant Reliability and Quantitative Microbial Risk Assessment & DPR‐2 Pathogen Monitoring in Raw Wastewater Dr. Brian Pecson 17 17 DPR Pathogen Risk and Treatment Drinking water 18 9
11/7/2019 DPR Pathogen Risk and Treatment Drinking water Risk Thres Risk Threshold 10 -4 infections per person per year 19 DPR Pathogen Risk and Treatment High 10 5 Pathogen Concentration 1 Drinking water Risk Thres Risk Threshold 10 -5 10 -4 infections per Very person per year Low 20 10
11/7/2019 DPR Pathogen Risk and Treatment High 10 5 Pathogen Concentration 1 Drinking water Risk Threshold Risk Thres Risk Risk 10 -5 10 -4 infections per Very person per year Low 21 DPR Pathogen Risk and Treatment High 10 5 Raw wastewater Pathogen Concentration 1 Drinking water Risk Risk 10 -5 Very Low 22 11
11/7/2019 DPR Pathogen Risk and Treatment High 10 5 Raw wastewater Pathogen Concentration Treatment eatment 10-log Requirements irements 1 Drinking water Risk Risk 10 -5 Very Low 23 DPR Pathogen Risk and Treatment Pathogen Pathogen High Concentrations Concentrations 10 5 Raw wastewater Pathogen Concentration Treatment eatment 10-log Requirements irements 1 Drinking water Risk Risk 10 -5 Very Low 24 12
11/7/2019 DPR Pathogen Risk and Treatment Pathogen Pathogen High Concentrations Concentrations 10 5 Raw wastewater Pathogen Concentration Treatment eatment 10-log 11-log Requirements irements 1 Drinking water Risk Risk 10 -5 Very Low 25 DPR Pathogen Risk and Treatment Pathogen Pathogen High Concentrations Concentrations 10 5 Raw wastewater Pathogen Concentration Treatment eatment 10-log 11-log 12-log Requirements irements 1 Drinking water Risk Risk 10 -5 Very Low 26 13
11/7/2019 DPR Pathogen Risk and Treatment Pathogen Pathogen High Concentrations Concentrations 10 5 Raw wastewater Pathogen Concentration Treatment eatment DPR-1: 10-log 11-log 12-log Requirements irements 1 Implementation of Probabilistic Treatment Train Performance and Drinking water QMRA Risk Risk 10 -5 Very Low 27 DPR Pathogen Risk and Treatment Pathogen Pathogen DPR-2: Pathogen High Concentrations Concentrations Monitoring 10 5 Raw wastewater Pathogen Concentration Treatment eatment DPR-1: 10-log 11-log 12-log Requirements irements 1 Implementation of Probabilistic Treatment Train Performance and Drinking water QMRA Risk Risk 10 -5 Very Low 28 14
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