HomeMy WebLinkAboutPresentation #28Public Hearing
for the City of Santa Ana's
2020 Urban Water Management Plan
2020 Water Shortage Contingency Plan
Appendix J Addendum to the 2015 Urban Water Management Plan
June 1, 2021
Public Hearing Items
• Represents the City's planning elements to satisfy the UWMP Act
I
Provides the City's planned actions to respond to water shortage conditions
• Provides Reduced Delta Reliance reporting to satisfy Delta Plan Policy WR P1
2020 Urban Water
Management Plan
2020 UWMP Background
• Purpose: To ensure, and demonstrate to the State, that there are adequate water supplies for
existing and future demands under various hydrologic scenarios
• Every urban water supplier providing water for municipal purposes to more than 3,000
customers or supplying more than 3,000 acre-feet of water annually
• 2020 UWMP is the 8th reporting cycle since inception of the Act
I * Deadline: July 1, 2021
2020 UWMP — Assessment Overview
Reliability Assessments
- Long-term (20-25 years)
- Near -term (5 years) NEW
- Annual
New Items in the City's 2020 UWMP
City's Water Use and Supply Overview
• —1.2% increase now to 2025
• —0.2% increase from 2025 — 2045
• In 2020 — 76% of City's supply
In 2045 — 84% of City's supply
• In 2020 —23% of City's supply
• In 2045 —15% of City's supply
• 1% of City's supply now & future
City's Reliability Assessment
Key Findings of City's 2020 UWMP
City has
long-term
water
service reliability under average year, single
dry year,
five
consecutive
drought
years
City has near -term supply capabilities sufficient for a drought period
lasting five consecutive years
City has plans for supply implementation and water use efficiency
investments to meet its projected water demands
Water Shortage
Contingency Plan
WSCP Overview
• Included in 2020 UWMP but also a standalone
document
• Annual Water Supply and Demand Assessment
• Six Standard Water Shortage Levels
• Shortage Response Actions
• Communication Protocols
Six Shortage Levels & Response Actions
0% (Normal) No supply reductions are anticipated in this year. The City proceeds with planned water efficiency best practices
Up to 10% City notifies its water users, a consumer demand reduction of up to 10% is necessary to make more efficient use of water and respond to
existing water conditions.
11% to 20% City notifies its water users, a consumer demand reduction of up to 20% is necessary to make more efficient use of water and respond to
existing water conditions. City shall implement the mandatory Level 2 conservation measures identified in the WSCP.
21% to 30% City declares a water shortage emergency condition pursuant to California Water Code section 350 and notifies its residents and businesses
that up to 30% consumer demand reduction is required to ensure sufficient supplies for human consumption, sanitation and fire protection.
31% to 40% City declares a water shortage emergency condition pursuant to California Water Code section 350 and notifies its residents and businesses
that up to 40% consumer demand reduction is required to ensure sufficient supplies for human consumption, sanitation and fire protection.
City declares a water shortage emergency condition pursuant to California Water Code section 350 and notifies its residents and businesses
41% to 50% that up to 50% or more consumer demand reduction is required to ensure sufficient supplies for human consumption, sanitation and fire
protection.
City declares a water shortage emergency condition pursuant to California Water Code section 350 and notifies its residents and businesses
>50% that greater than 50% or more consumer demand reduction is required to ensure sufficient supplies for human consumption, sanitation and
fire protection.
Appendix J
Addendum to 2015 UWMP
Reduced Delta Reliance Reporting
The Delta Plan Background
• Delta Plan policy WR P1 details what is needed to demonstrate consistency with reduced reliance on the Delta and
improved regional self-reliance.
• Projects undertaken by state or local agencies
• Occur in whole or in part in the Delta
• Involves transferring water through, exporting water from, or using water in the Delta
• Should provide information in our 2015 and 2020 UWMP
• Details near -term (2025) and long term (2040) regional self reliance of the City
DWR Issued New Guidance on WR P1
• Set a baseline (2010)
• Calculate water use efficiency since baseline
• Calculate supplies contributing to regional self-reliance (local supplies, water recycling,
advanced water technologies (AWTs)
• Calculate reliance on supplies from the Delta watershed
• Developed in conjunction with Metropolitan as part of the UWMP coordination process
Presentation Summary
✓Draft 2020 UWMP and draft WSCP satisfy all UWMP Act requirements
✓Draft Appendix J Reduced Delta Reliance report consistent with guidance
✓Draft plans prepared in coordination with appropriate agencies
✓Draft plans posted for public review
✓Notification requirements completed for the Public Hearing
✓Public Hearing today
✓Recommend City Council adopt plans today
✓Submission on track to meet July 1 deadline
Recommended Actions
✓City Council to adopt the City's
✓2020 Urban Water Management Plan
✓2020 Water Shortage Contingency Plan
✓Appendix J Addendum to 2015 Urban Water Management Plan
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