mmwd1013i1.pptx/1 hormones, pharmaceuticals, and personal care products (cecs) in water october 20,...
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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 ExpertsTRANSCRIPT
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Hormones, Pharmaceuticals, and Personal Care Products (CECs) in WaterOctober 20, 2015
Andrew [email protected]
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Organization Confidence 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
![Page 3: Mmwd1013i1.pptx/1 Hormones, Pharmaceuticals, and Personal Care Products (CECs) in Water October 20, 2015 Andrew Salveson](https://reader035.vdocuments.net/reader035/viewer/2022062504/5a4d1b1f7f8b9ab059994c1f/html5/thumbnails/3.jpg)
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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
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Potable Water ReuseWastewater Treatment
Urban Water Use
Water Treatment
Environmental Buffer
Advanced Water
Treatment
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In Response to Board Concerns, Carollo and SqCWD Staff Compiled a Detailed Literature Review of CECs in Water and in Potable Water Reuse Projects
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Potable Water Reuse Projects in California Must Meet Extensive Water Quality Criteria
MCL – maximum contaminant level
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Potable Water Reuse Projects in California Must Meet Extensive Water Quality Criteria
MCL – maximum contaminant levelNL – notification level
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Potable Water Reuse Projects in California Must Meet Extensive Water Quality Criteria
MCL – maximum contaminant levelNL – notification levelug/L – microgram per literng/L – nanogram per liter
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National Research Council (2012) Documents Margins of Safety for CECs
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Potable Water Supplies Are Not Pure, but Properly Engineered Treatment Makes Them Safe
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Per California Regulations, Potable Reuse Projects Have Multiple Barriers for Public Health Protection
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CECs are Consistently Found in Raw Wastewater and, to a lesser extent, in Treated Wastewater
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Reverse Osmosis removes salts, organic carbon, and the vast majority of CECs
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Final Product Water from Potable Reuse Treatment is Equal or Higher Quality Than Conventional Water Supplies
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Final Product Water from Potable Reuse Treatment is Equal or Higher Quality Than Conventional Water Supplies
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Potable Reuse Public Health AnalysisBig Spring Texas
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Fluorescence Images Tell a Good Story
Effluent RO Permeate
Moss Creek Lake
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Reverse Osmosis Achieves Robust Removal of Trace Organics (Pharmaceuticals etc.)
Sucralose
Sulfameth
oxa...
Atenolo
l
Fluoxe
tine
Meprob
amate
Primido
neDEET
TCEP
Triclos
an
Tricloc
arban
1
10
100
1000
10000
100000Secondary EffluentMF FiltrateRO Permeate
Concentration (ng/L)
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Ultraviolet Light Advanced Oxidation Finishes the Job
Sucralose
Sulfameth
oxa...
Atenolo
l
Fluoxe
tine
Meprob
amate
Primido
neDEET
TCEP
Triclos
an
Tricloc
arban
1
10
100
1000
10000
100000
Secondary EffluentMF FiltrateRO PermeateFinished Water
Concentration (ng/L)
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Purified Water Quality Much Better than Conventional Water Supply
Sucralose
Sulfameth
oxa...
Atenolo
l
Fluoxe
tine
Meprob
amate
Primido
neDEET
TCEP
Triclos
an
Tricloc
arban
1
10
100
1000
10000
100000Secondary EffluentMF FiltrateRO PermeateFinished WaterDetection LimitMoss Creek Lake
Concentration (ng/L)
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Sucralose
Sulfameth
oxa...
Atenolo
l
Fluoxe
tine
Meprob
amate
Primido
neDEET
TCEP
Triclos
an
Tricloc
arban
1
10
100
1000
10000
100000Secondary EffluentMF FiltrateRO PermeateFinished WaterDetection LimitMoss Creek Lake
Concentration (ng/L)
Purified Water Quality Much Better than Conventional Water Supply
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0
1
2
3
4
5
6
7
8
9
10Moss Creek LakeFinished Water
ng/L
The Story is similar for Nitrosamines…
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Estrone Estradiol Ethynylestradiol Testosterone Progesterone0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1Moss Creek LakeFinished Water
ng/L
… and Estrogens…
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PFBA
PFHxS
PFHxAPFOA
PFOSPFNA
PFDA
PFUdA
PFDoA
PFPnA
PFHpA0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5Moss Creek Lake
Finished Water
ng/L
… and Perfluorinated Chemicals…
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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.
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Thank You for Listening