why should we be concerned about wastewater quality and reuse?
DESCRIPTION
Why Should We Be Concerned About Wastewater Quality and Reuse?. Fred Corson, Ph.D. Why Am I Concerned?. Pertinent Regulations Contaminants of Concern Groundwater Contamination Future actions?. Pertinent Regulations. Safe Drinking Water Act Clean Water Act Title 22 - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/1.jpg)
Why Should We Be Concerned About
Wastewater Quality and Reuse?
Why Should We Be Concerned About
Wastewater Quality and Reuse?
Fred Corson, Ph.D.Fred Corson, Ph.D.
![Page 2: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/2.jpg)
Why Am I Concerned?Why Am I Concerned?
• Pertinent Regulations• Contaminants of Concern• Groundwater Contamination• Future actions?
• Pertinent Regulations• Contaminants of Concern• Groundwater Contamination• Future actions?
![Page 3: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/3.jpg)
Pertinent RegulationsPertinent Regulations
• Safe Drinking Water Act• Clean Water Act• Title 22• Antidegradation Policy
• Safe Drinking Water Act• Clean Water Act• Title 22• Antidegradation Policy
![Page 4: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/4.jpg)
Safe Drinking Water Act & Clean Water Act
Safe Drinking Water Act & Clean Water Act
• Regulate Only 127 Chemicals of 87,000 chemicals produced!!
• Regulate Only 127 Chemicals of 87,000 chemicals produced!!
![Page 5: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/5.jpg)
Pertinent RegulationsPertinent Regulations
• Safe Drinking Water Act• Clean Water Act• Title 22• Antidegradation Policy
• Safe Drinking Water Act• Clean Water Act• Title 22• Antidegradation Policy
![Page 6: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/6.jpg)
Emerging Wastewater Contaminants of ConcernEmerging Wastewater Contaminants of Concern
• Currently unregulated organic chemicals
• Growing Items of Commerce
• Drugs, hormones, detergents
• Plasticizers, pesticides, fire retardants
• Hormonally active at very low concentrations
• Currently unregulated organic chemicals
• Growing Items of Commerce
• Drugs, hormones, detergents
• Plasticizers, pesticides, fire retardants
• Hormonally active at very low concentrations
![Page 7: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/7.jpg)
Santa Rosa WastewaterSanta Rosa Wastewater
• Copper, lead, nickel, cyanide
• Excessive nutrients
• Up to 60 mg/l total organic carbon
• Most organics unidentified
• Endocrine disruption activity observed
• Copper, lead, nickel, cyanide
• Excessive nutrients
• Up to 60 mg/l total organic carbon
• Most organics unidentified
• Endocrine disruption activity observed
![Page 8: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/8.jpg)
Groundwater ContaminationGroundwater Contamination
• Percolation from storage and Laguna
• Percolation under current reuse projects
• Major new urban reuse proposed
• Major north county ag reuse proposed
• Nature of treatment process
• Percolation from storage and Laguna
• Percolation under current reuse projects
• Major new urban reuse proposed
• Major north county ag reuse proposed
• Nature of treatment process
![Page 9: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/9.jpg)
In Singapore RO wateris bottled and sold
In Singapore RO wateris bottled and sold
Orange county recharges aquifers with RO water
Orange county recharges aquifers with RO water
Ultimate Solution: Reverse Osmosis TreatmentUltimate Solution: Reverse Osmosis Treatment
![Page 10: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/10.jpg)
Ultimate Solution:Reverse Osmosis TreatmentUltimate Solution:Reverse Osmosis Treatment
• Increasing value of clean water• Decreasing cost of treatment• Tightening regulations
• Increasing value of clean water• Decreasing cost of treatment• Tightening regulations
![Page 11: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/11.jpg)
Strategy:Accelerate Decision to use ROStrategy:Accelerate Decision to use RO
• Data on organic contaminants in municipal wastewater
• Data on effectiveness of current RO facilities• Data on organic contaminants in Santa Rosa
wastewater• Increase costs for interim options via CEQA and
regulatory processes
• Data on organic contaminants in municipal wastewater
• Data on effectiveness of current RO facilities• Data on organic contaminants in Santa Rosa
wastewater• Increase costs for interim options via CEQA and
regulatory processes
![Page 12: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/12.jpg)
North Coast Regional Water Quality Control BoardNorth Coast Regional Water Quality Control Board
• Tough updated discharge permit• New permit required for discharge
relocation• New requirements for wastewater reuse
• Tough updated discharge permit• New permit required for discharge
relocation• New requirements for wastewater reuse
![Page 13: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/13.jpg)
New Requirements for Wastewater ReuseNew Requirements for Wastewater Reuse
• Meet same effluent limitations as discharge• No surface runoff from reuse area• No groundwater degradation• Groundwater quality study
• Meet same effluent limitations as discharge• No surface runoff from reuse area• No groundwater degradation• Groundwater quality study
![Page 14: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/14.jpg)
• Regulations are improving• Wastewater contains organic contaminants• Human health and environmental impacts are
likely• Contaminants can and must be removed• Must accelerate move to RO• Progress is being made
• Regulations are improving• Wastewater contains organic contaminants• Human health and environmental impacts are
likely• Contaminants can and must be removed• Must accelerate move to RO• Progress is being made
![Page 15: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/15.jpg)
What Can Each of Us Do?What Can Each of Us Do?
• Understand wastewater regulations
• Understand wastewater quality concerns
• Input into all stages of CEQA process
• Input into permitting process for discharge and reuse
• Understand wastewater regulations
• Understand wastewater quality concerns
• Input into all stages of CEQA process
• Input into permitting process for discharge and reuse
![Page 16: Why Should We Be Concerned About Wastewater Quality and Reuse?](https://reader036.vdocuments.us/reader036/viewer/2022062409/56814f55550346895dbcfe30/html5/thumbnails/16.jpg)
Thank you!Thank you!
Questions?
Questions?