Orange County Water District
In connection with Item No. 1.2
Director Steve Sheldon & General Manager Mike Markus P.E., D.WRE, BCEE, F.ASCE Orange County Water District City of Irvine October 28, 2014
Orange County Water District (OCWD) Formed in 1933 • OCWD manages and replenishes the Orange County Groundwater Basin (GB) • The GB stores OC’s largest source of drinking water —270 sq. miles • The GB provides 72% of daily water needs of 2.4 million people in north and central OC at 1/3 cost of imported water • Internationally recognized facilities and team
Orange County Has Two Major Water Sources
Coastal Cities
Drinking Water Wells
Anaheim Recharge
Shallow Aquifer
0’
1,000’
Principal Aquifer
2,000’
Deep Aquifer NONWATER-BEARING FORMATION
3,000’
0 miles
5
10
Imported: Metropolitan Water District
Groundwater: Orange County Water District
$1000 AF
$374 AF
15
20
Drought 2014
• Over the past three years, OCWD has spent $79.3 million purchasing untreated imported water to partially refill the basin and offset major impacts of the recent drought • OCWD recently invested $142 million to expand the Groundwater Replenishment System (GWRS) – Provides a source of water that would otherwise be discharged into the ocean • Although groundwater levels have fallen, they are still within normal historic operating range due to careful planning & GWRS
Basin storage has risen and fallen many times due to wet and dry periods 100,000
June 2014 342,000 AF
Basin Operating Range
200,000 300,000 400,000 500,000 600,000
Dry Periods Jun-14
Jun-09
Jun-04
Jun-99
Jun-94
Jun-89
Jun-84
Jun-79
Jun-74
700,000 Jun-69
Accumulated Overdraft (AF)
0
GWRS—A NEW WATER SUPPLY
Advanced Water Purification • • •
•
•
•
Operational since January 2008 70 million gallons per day Takes treated sewer water that otherwise would be wasted to the Pacific Ocean and purifies it to near-distilled quality Provides a new 72,000 acre-feet source of water—enough water for nearly 600,000 people $481 million joint project with Orange County Sanitation District Controversial for its time - had to overcome public perception issues to gain acceptance
OCWD Service Territory Water Supplies 600,000 500,000 Acre-Feet Per Year
Imported 400,000
Misc GWRS
300,000
Natural Incidental 200,000
SAR Storm Flow SAR Base flow
100,000 0 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
About Your Water
• Your drinking water meets all state & federal standards • The groundwater basin (72% of your drinking water supply) is being threatened • OCWD legacy in protecting groundwater basin • Basin is a vital resource to all of Orange County • Collaborative approach with the proper authorities will get the job done • We need a fully functioning groundwater basin, especially during droughts
South Basin Plumes and Threatened Wells
Edinger
Warner
• Industrial businesses released toxic contamination polluting the groundwater • One well has already been turned off because contaminants exceeded the Maximum Contaminant Level (MCL) • One well could provide enough water for 40,000 residents • So far, a few of the Responsible Parties have settled lawsuits admitting contamination and agreeing to fund $16 million in onsite and offsite cleanup • More cleanup needs to be done
Main Warner Dyer Redhill
Barranca MacArthur Alton Sunflower
Von Karmann Main
Solution – A holistic approach to contain and clean up contamination • Break problem into 2 parts: – on-site (highest concentrations) – handled by state agencies – off-site high concentrations (shallow aquifer) – handled by OCWD
• • • •
Coordinate with regulatory agencies Collaborate and work with communities Continue to seek cost recovery from those responsible South Basin groundwater cleanup will be based on research and proven technologies • National Contingency Plan (NCP) – federal government’s blueprint for responding to both oil spills and hazardous substance releases.
The National Contingency Plan
We are here
Start
Investigate
OCWD will be developing a schedule to reach remedy selection
Study Solutions
Investigate and Study
Choose Cleanup Solution
Design Solution
Public Review and Input
Regulatory & Public Review & Approval are Incorporated in the Process
End of Presentation Questions? Please call 714-378-8244. To
sign up for tours or for more information, visit us at www.ocwd.com.
To receive
our newsletter, please leave your card with our staff member.
Director Steve Sheldon & General Manager Mike Markus P.E., D.WRE, BCEE, F.ASCE Orange County Water District City of Irvine October 28, 2014
Orange County Water District (OCWD) Formed in 1933 • OCWD manages and replenishes the Orange County Groundwater Basin (GB) • The GB stores OC’s largest source of drinking water —270 sq. miles • The GB provides 72% of daily water needs of 2.4 million people in north and central OC at 1/3 cost of imported water • Internationally recognized facilities and team
Orange County Has Two Major Water Sources
Coastal Cities
Drinking Water Wells
Anaheim Recharge
Shallow Aquifer
0’
1,000’
Principal Aquifer
2,000’
Deep Aquifer NONWATER-BEARING FORMATION
3,000’
0 miles
5
10
Imported: Metropolitan Water District
Groundwater: Orange County Water District
$1000 AF
$374 AF
15
20
Drought 2014
• Over the past three years, OCWD has spent $79.3 million purchasing untreated imported water to partially refill the basin and offset major impacts of the recent drought • OCWD recently invested $142 million to expand the Groundwater Replenishment System (GWRS) – Provides a source of water that would otherwise be discharged into the ocean • Although groundwater levels have fallen, they are still within normal historic operating range due to careful planning & GWRS
Basin storage has risen and fallen many times due to wet and dry periods 100,000
June 2014 342,000 AF
Basin Operating Range
200,000 300,000 400,000 500,000 600,000
Dry Periods Jun-14
Jun-09
Jun-04
Jun-99
Jun-94
Jun-89
Jun-84
Jun-79
Jun-74
700,000 Jun-69
Accumulated Overdraft (AF)
0
GWRS—A NEW WATER SUPPLY
Advanced Water Purification • • •
•
•
•
Operational since January 2008 70 million gallons per day Takes treated sewer water that otherwise would be wasted to the Pacific Ocean and purifies it to near-distilled quality Provides a new 72,000 acre-feet source of water—enough water for nearly 600,000 people $481 million joint project with Orange County Sanitation District Controversial for its time - had to overcome public perception issues to gain acceptance
OCWD Service Territory Water Supplies 600,000 500,000 Acre-Feet Per Year
Imported 400,000
Misc GWRS
300,000
Natural Incidental 200,000
SAR Storm Flow SAR Base flow
100,000 0 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
About Your Water
• Your drinking water meets all state & federal standards • The groundwater basin (72% of your drinking water supply) is being threatened • OCWD legacy in protecting groundwater basin • Basin is a vital resource to all of Orange County • Collaborative approach with the proper authorities will get the job done • We need a fully functioning groundwater basin, especially during droughts
South Basin Plumes and Threatened Wells
Edinger
Warner
• Industrial businesses released toxic contamination polluting the groundwater • One well has already been turned off because contaminants exceeded the Maximum Contaminant Level (MCL) • One well could provide enough water for 40,000 residents • So far, a few of the Responsible Parties have settled lawsuits admitting contamination and agreeing to fund $16 million in onsite and offsite cleanup • More cleanup needs to be done
Main Warner Dyer Redhill
Barranca MacArthur Alton Sunflower
Von Karmann Main
Solution – A holistic approach to contain and clean up contamination • Break problem into 2 parts: – on-site (highest concentrations) – handled by state agencies – off-site high concentrations (shallow aquifer) – handled by OCWD
• • • •
Coordinate with regulatory agencies Collaborate and work with communities Continue to seek cost recovery from those responsible South Basin groundwater cleanup will be based on research and proven technologies • National Contingency Plan (NCP) – federal government’s blueprint for responding to both oil spills and hazardous substance releases.
The National Contingency Plan
We are here
Start
Investigate
OCWD will be developing a schedule to reach remedy selection
Study Solutions
Investigate and Study
Choose Cleanup Solution
Design Solution
Public Review and Input
Regulatory & Public Review & Approval are Incorporated in the Process
End of Presentation Questions? Please call 714-378-8244. To
sign up for tours or for more information, visit us at www.ocwd.com.
To receive
our newsletter, please leave your card with our staff member.
