CC 2024-04-09 City Water Supply and Future Resources_PPCity Water Supply, Central Coast Blue, and Future Resources
4/9/2024
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Summary
Reprieve - Immediate water supply healthy
Remind - Current conditions do not negate need to plan for future shortages
Re-evaluate - Central Coast Blue
Recent financial update
Benefits to date
Regroup – how to proceed?
4/9/2024
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Water Supply
4/9/2024
Projected Water Demand
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Water Reliability
“Normal” year – supplies adequate
Single dry year – supplies adequate
Five consecutive dry years
10% loss in supply in fourth year
20% loss in supply in fifth year
Inadequate to meet future needs
Need a plan to address this shortage
4/9/2024
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Reevaluate - What’s Changed?
Central Coast Blue cost estimate increase
Multi-year drought ended in 2023
Climate change - water supply more challenging to predict
“Permanent” conservation
2007 – 191 gpdp
2023 – 100 gpdp
State indoor water use goal – 50-55 gpdp
SLO County – can now exchange water for CCWA capacity
Ability to “carry over” and store surface water in Lopez Lake
4/9/2024
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Lopez Lake
4/9/2024
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CCB Benefits to-date
JPA = regional collaboration
Land acquisition
Groundwater models
Geotechnical reports
Supplemental funding
Permitting
Preliminary design
More refined engineer’s estimates
One injection well
4/9/2024
I think this is a good list in case they ask, but Don’t think we should display like this.
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Mid-term
Continued/additional water conservation
2020 actual demand 24% less than projected in 2015 due to conservation
Currently 100 gpdp
Purchase supplemental water from Oceano Community Services District when needed, if available
Purchase State Water exchanged with Central Coast Water Authority – now allowed
Utilize Lopez Lake as a stored water account
4/9/2024
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Long-term
Invest now (time, $, policy development) for future
Regroup to identify best course of action given existing finances and continued need (to be determined?)
Phase in regional wastewater recycling (to be determined?)
Secure more funding - capitalize on future opportunities
Continue regional partnerships
Continue encouraging conservation
Fine tune water management strategy
4/9/2024
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Budget Adjustment
Original intent – WIFIA
Delay impacts WIFIA financing
Budget amendment for FY 2023-24 pre-construction costs - $514,200.
8/22/2024
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Questions?
4/9/2024
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Other Factors Considered
4/9/2024
This is a good infographic, but we should leave it out.
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Options considered but rejected
New irrigation well(s) for landscaping currently using potable water
Cemetery
Does not solve issue of strain on Santa Maria Groundwater Basin
Well water from Conoco-Phillips refinery
Nacimiento/State Water exchange
Desalination (Diablo, SSLOCSD), $2,675/AF in 2006
Additional stormwater basins
Raise Lopez Lake Dam – up to 11,400 AF, $1,255/AF 2013
4/9/2024
We shouldn’t display this slide. We can have these as extra information if asked, but shouldn’t display
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Historical Water Usage
8/22/2024
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