CC 2016-06-28_10b UWMP PPJune 28, 2016
Final Draft Review
2015 Urban Water Management Plan
City Council Meeting
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Presentation Topics
Background
Purpose
Changes Since the 2010 UWMP
Components of the UWMP
Plan Preparation
System Description
System Demands
System Supplies
Water Supply Reliability
Water Shortage Contingency Planning
Demand Management Measures
Q & A
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Background
Urban Water Management Planning Act (Division 6 Part 2.6 of the California Water Code §10610 - 10656)
3,000 connections or 3,000 acre-feet per year (afy)
Submit an Urban Water Management Plan (UWMP) to the California Department of Water Resources (DWR) every five years
City has submitted UWMPs since 1985—most recently in 2012
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Purpose
Statutory requirement for State funding
Standardized water planning resource for:
State- California Water Plan
Region- Integrated Regional Water Management Plan (IRWMP)
County- County Master Water Report, and SLO County General Plan-Resource Summary Report
City- City General Plan and Water Supply Assessments (WSAs), Water and Wastewater Master Plans
City customers- customer programs outreach and education
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Changes Since the 2010 UWMP
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Components of the UWMP
Plan Preparation
System Description
System Demands
System Supplies
Water Supply Reliability
Water Shortage Contingency Planning
Demand Management Measures
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Plan Preparation
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System Description
5.87 square miles
2015 Metered Connections: 6,605
2015 City Population: 17,731 (Department of Finance)
2015 Water Service Area Population: 17,636
2015 Water Use: 2,239 acre-feet
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System Description cont.
Why the difference in populations?
Portions of City in southwest served by OCSD
Customers served outside of City Limits
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System Demands
Select base daily per capita water use based on a selected 10 year historical average
Selected 10-year average from 1999-2008 (191 gpcd)
SB7 Per Capita Target Calculation Methods
Method 1: 80% of Base Daily Per Capita Water Use
Method 2: Performance standards applied to indoor residential use; landscaped area water use; and CII uses
Method 3: 95% of Regional Target in California Water Plan
Method 4: DWR BMP Water Savings
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1995 2004
2001 2010
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System Demands cont.
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System Supplies
Sources
Groundwater
Santa Maria Valley Groundwater Basin
Pismo Formation
Lopez Reservoir
Other Potential Future Sources
Water Purchases
Recycled Water
Desalinated Water
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Water Supply Reliability
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Water Supply Reliability cont.
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Water Supply Reliability cont.
Reliability of Groundwater and Lopez Reservoir
Potential seawater intrusion
Habitat Conservation Plan (HCP)
Low Reservoir Response Plan (LRRP)
Supplemental Water Supply Sources
Lopez Surplus
Lopez Reservoir Spillway Raising
Supplemental State Water via the Coastal Branch and Lopez Pipelines
Recycled Water- SSLOCSD and Pismo Beach
Desalinated Water- Diablo Canyon Power Plant
Stormwater System
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Water Shortage Contingency Planning
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Demand Management Measures (DMMs)
The City implements all applicable DMMs and some additional DMMs including:
Cash for Grass
Water Efficient Washer Rebates
Smart Irrigation Controller
Plumbing Retrofits
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Questions?
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Reference Figures
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