Annual Survey
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ANNUAL SURVEY March 2019 Fiscal Year 2017-18 Bay Area Water Supply and Conservation Agency FY 2017-18 EXECUTIVE SUMMARY BAWSCA OVERVIEW PAST AND CURRENT PURCHASES FROM SFPUC TOTAL WATER SUPPLY AND DEMAND CURRENT WATER USE BY CUSTOMER CLASS CLIMATOLOGICAL DATA SERVICE AREA POPULATIONS CURRENT WATER USE PER CAPITA CURRENT RESIDENTIAL WATER BILLS AGENCY PROFILES MARCH 2019 BAWSCA WATER FACTS AT-A-GLANCE – FY 2017-18 BAWSCA Member Agencies San Mateo County - City of Brisbane / Guadalupe Valley Municipal Improvement District, City of Burlingame, California Water Service Company (Bear Gulch District, Mid-Peninsula District, South San Francisco District), Coastside County Water District, City of Daly City, City of East Palo Alto, Estero Municipal Improvement District, Town of Hillsborough, City of Menlo Park, Mid-Peninsula Water District, City of Millbrae, North Coast County Water District, City of Redwood City, City of San Bruno, and Westborough Water District Santa Clara County - City of Milpitas, City of Mountain View, City of Palo Alto, Purissima Hills Water District, San Jose Municipal Water System – North, City of Santa Clara, Stanford University, and City of Sunnyvale Alameda County - Alameda County Water District, City of Hayward Service Areas Size (sq. mi.) Population Number of Agencies San Mateo County 185 746,013 16 Santa Clara County 117 561,898 8 Alameda County 166 516,500 2 Total 468 1,824,411 26 Supply by Source ccf mgd af % San Francisco RWS 65,134,913 133.48 149,529 66.7% Groundwater 9,459,252 19.38 21,715 9.7% Surface Water 1,728,020 3.54 3,967 1.8% Recycled Water 4,028,656 8.26 9,249 4.1% Other Sources 17,372,885 35.60 39,883 17.8% Total 97,723,725 200.27 224,343 100% Demand by Sector ccf mgd af % Residential 54,612,442 111.92 125,373 55.9% Commercial/Industrial 21,192,110 43.43 48,650 21.7% Government/Institutional/Other 4,983,127 10.21 11,440 5.1% Dedicated Irrigation 10,021,509 20.54 23,006 10.3% Non-Revenue Water 6,914,537 14.17 15,873 7.1% Total 97,723,725 200.27 224,343 100% Water Measurements af = acre-foot; 1 af = 435.6 ccf or 325,851 gallons ccf = 100 cubic feet; approximately 748 gallons gpcd = gallons per capita per day mgd = million gallons per day Cover photo: Calaveras Dam Embankment Construction, April 25, 2018. Image Courtesy of Adrianne Carr, BAWSCA. Printed on recycled paper BAWSCA Annual Survey – FY 2017-18 TABLE OF CONTENTS Executive Summary About BAWSCA ........................................................................................................................................................ ES-1 BAWSCA Member Agencies .................................................................................................................................. ES-1 Annual Survey Overview ......................................................................................................................................... ES-3 Total Water Demand and Supply ......................................................................................................................... ES-4 Current Water Use by Class of Customer ............................................................................................................ ES-7 Climate Data .............................................................................................................................................................. ES-8 Population and Per Capita Water Use ................................................................................................................ ES-8 Single Family Water and Rate Structures ............................................................................................................ ES-8 1. BAWSCA Overview Goals ............................................................................................................................................................................. 1-1 Composition .................................................................................................................................................................. 1-1 Governance .................................................................................................................................................................. 1-2 Organizational Challenges ....................................................................................................................................... 1-2 BAWSCA Members Summary – FY 2017-18 (Table 1) ..................................................................................... 1-4 2. Past, Current, and Projected Purchases from SF RWS Past and Current Purchases from SF RWS and Relationship to the Supply Guarantee (Table 2A) ................................................................................................................. 2-2 Monthly/Seasonal Purchases from SF RWS Among BAWSCA Members – FY 2017-18 (Table 2B) ................................................................................................................... 2-4 Historical SF RWS Wholesale Water Purchases by BAWUA/BAWSCA Agencies (Table 2C) .............................................................................................................................................. 2-5 Supplemental SF RWS Water Purchases by Participating BAWSCA Agencies (Table 2D) ........................................................................................................................... 2-6 3. Total Water Supply and Demand Historical BAWSCA Water Use by Agency (Table 3A) ...................................................................................... 3-1 Historical Water Use Among BAWUA/BAWSCA Agencies (Table 3B) .......................................................... 3-2 Water Use by Source of Supply – FY 2017-18 (Table 3C) ............................................................................. 3-5 Total Monthly Water Use – FY 2017-18 (Table 3D) ......................................................................................... 3-6 Demand Projections by Source – Purchases from SFPUC (Table 3E-1) ........................................................... 3-7 Demand Projections by Source – Groundwater Production (Table 3E-2) ....................................................... 3-8 Demand Projections by Source – Surface Water Production (Table 3E-3) .................................................... 3-8 Demand Projections by Source – Recycled Water (Table 3E-4) ...................................................................... 3-9 Demand Projections by Source – Other Sources (Table 3E-5) .......................................................................... 3-9 Demand Projections by Source – Summary (Table 3E-6) ................................................................................ 3-10 4. Current Water Use by Customer Class Potable Water Use by Customer Class – FY 2017-18 (Table 4A) .................................................................. 4-3 Total Water Use by Customer Class – FY 2017-18 (Table 4B)........................................................................ 4-4 Number of Customer Accounts – FY 2017-18 (Table 4C) .................................................................................. 4-5 5. Climatological Data Climatological Data (Table 5A) ............................................................................................................................... 5-1 i BAWSCA Annual Survey – FY 2017-18 6. Service Area Populations BAWSCA Service Area Populations (Table 6) ...................................................................................................... 6-1 7. Current Water Use Per Capita Residential Per Capita Consumption and Single-Family Average Monthly Use Among BAWSCA Members – FY 2017-18 (Table 7A) ................................................................................................................... 7-3 Gross Per Capita Consumption and Single-Family Average Monthly Use Among BAWSCA Members – FY 2017-18 (Table 7B)................................................................................................................... 7-4 Historical BAWUA/BAWSCA Per Capita Data (Table 7C)................................................................................ 7-5 8. Current Residential Water Bills and Wholesale Water Rates Single-Family Water Bills Based on Average Monthly Use for FY 2017-18, Using Rates in Effect for FY 2017-18 (Table 8A) ........................................................................................... 8-3 Single Family Water Bills Based on Average Monthly Use for FY 2017-18, Using Rates in Effect for FY 2017-18; Inclusive of Service Charge (Table 8B) .......................................................................................... 8-4 Past and Current SF RWS Wholesale Water Rates and Bond Surcharges for FY 2017-18, Using Rates in Effect for FY 2017-18 (Table 8C) ........................................................................................... 8-7 9. Agency Profiles Alameda County Water District ............................................................................................................................... 9-3 City of Brisbane / Guadalupe Valley Municipal Improvement District ........................................................... 9-6 City of Burlingame ...................................................................................................................................................... 9-8 California Water Service - Bear Gulch District