Attachment A: 2026 Annual Water Shortage Assessment Report Tables
Table 1. Annual Assessment Information
Annual Assessment Information
Year Covered By This Shortage Report (Required)
Start: July 1, 2026
End: June 30, 2027
Volume Unit for Reported Supply and Demand:
(Must use the same unit throughout) AF
Supplier's Annual Assessment Planning Cycle (Required) Start Month: July
End Month: June
Data Interval: Monthly (12 data points per year)
Water Supplier's Contact Information (Required)
Water Supplier's Name: City of Palo Alto
Contact Name: Lisa Bilir
Contact Title: Assistant Director of Utilities, Resource Management Street Address: 250 Hamilton Avenue, Palo Alto
ZIP Code: 94301
Phone Number: (650)329-2543
Email Address: [email protected]
Report Preparer's Contact Information
(if different from above)
Preparer's Organization Name:
Preparer's Contact Name:
Phone Number:
Email Address:
Supplier's Water Shortage Contingency Plan
WSCP Title 2020 Water Shortage Contingency Plan of the City of Palo Alto WSCP Adoption Date 6/7/2021
Other Annual Assessment Related Activities
Activity Timeline/ Outcomes / Links / Notes
Annual Assessment/ Shortage Report Title: Optional
Annual Assessment / Shortage Report Approval Date:6/15/2026 Other Annual Assessment Related Activities:
The 2020 Water Shortage Contingency Plan of the City of Palo Alto states that Palo Alto will utilize the BAWSCA Regional Reliability Model to evaluate water supply availability, however, the plan also permits the City to use SFPUC data since SFPUC is the City's sole supplier. Specifically, the 2020 Water Shortage Contingency Plan states: "Because Palo Alto relies on only one potable water supply source, SFPUC RWS water, the Annual Assessment will rely on key data inputs from the SFPUC." Palo Alto used the SFPUC's April 14, 2026 Final Water Supply Availability Estimate to determine water supply.
(Add rows as needed)
= From prior tables
= Auto calculated
Use Type Start Year: 2026 Volumetric Unit Used2: AF Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Total by Water Demand Type
All Demands 1313 1287 1309 1090 931 687 655 576 661 699 971 1137 11316 0 0
0 0
0 0
0 0
0 1313 1287 1309 1090 931 687 655 576 661 699 971 1137 11316 All Demands Tertiary 54 53 35 22 11 2 2 11 9 24 42 50 315 0 0
0 0
54 53 35 22 11 2 2 11 9 24 42 50 315
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Total
0 0
0 0
Table 2: Water Demands1
Projected Water Demands - Volume3
Total by Month (Non-Potable)
1Projections are based on best available data at time of submitting the report and actual demand volumes could be different due to many factors. 2Units of measure (AF, CCF, MG) must remain consistent. 3When opting to provide other than monthly volumes (bi-monthly, quarterly, or annual), please see directions on entering data for Projected Water Demand in the Table Instructions.
Notes: Potable unconstrained customer demand determined using the end-use model described in the 2020 UWMP Section 4. Non-potable unconstrained customer demand determined based on 2020 UWMP projection.
Total by Month (Potable)
Additional
Description
(as needed)
Level of
Treatment
for Non-
Potable
Supplies
Drop-down
list
Drop-down list
May select each use multiple times
These are the only Use Types that will
be recognized by the WUEdata online
submittal tool
(Add additional rows as needed)
Demands Served by Potable Supplies
Demands Served by Non-Potable Supplies
Three years ago total demand
Four years ago total demand
Optional (for comparison purposes)
Last year's total demand
Two years ago total demand
= From prior tables
= Auto calculated
Use Type Start Year: 2025 Volumetric Unit Used 2: AF Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Total by Water Demand Type
All Demands 1310 1285 1307 1088 929 686 654 575 660 697 969 1135 11295 0 0
0 0
0 0
0 0
0 1310 1285 1307 1088 929 686 654 575 660 697 969 1135 11295 All Demands Tertiary 54 53 35 22 11 2 2 11 9 24 42 50 315 0 0
0 0
54 53 35 22 11 2 2 11 9 24 42 50 315
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Total
0 0
0 0
Table 2: Water Demands1
Projected Water Demands - Volume3
Total by Month (Non-Potable)
1Projections are based on best available data at time of submitting the report and actual demand volumes could be different due to many factors. 2Units of measure (AF, CCF, MG) must remain consistent. 3When opting to provide other than monthly volumes (bi-monthly, quarterly, or annual), please see directions on entering data for Projected Water Demand in the Table Instructions.
Notes: Potable unconstrained customer demand determined using the end-use model described in the 2020 UWMP Section 4. Non-potable unconstrained customer demand determined based on 2020 UWMP projection.
Total by Month (Potable)
Additional
Description
(as needed)
Level of
Treatment
for Non-
Potable
Supplies
Drop-down
list
Drop-down list
May select each use multiple times
These are the only Use Types that
will be recognized by the WUEdata
online submittal tool
(Add additional rows as needed)
Demands Served by Potable Supplies
Demands Served by Non-Potable Supplies
Three years ago total demand
Four years ago total demand
Optional (for comparison purposes)
Last year's total demand
Two years ago total demand
= From prior tables
= Auto calculated
Water Supply Start Year: 2026 Volumetric Unit Used2: AF Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Total by
Water
Supply Type
Purchased/Imported Water
San Francisco
Public Utilities
Commission
Regional
Water Supply
System
1313 1287 1309 1090 931 687 655 576 661 699 971 1137 11316 0 0
0 0
0 0
0 0
0 1313 1287 1309 1090 931 687 655 576 661 699 971 1137 11316 0 Recycled Water
Recycled
Water from
the Regional
Water Quality
Control Plant
54 53 35 22 11 2 2 11 9 24 42 50 315
0 0
0 0
54 53 35 22 11 2 2 11 9 24 42 50 315 0
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Total
0 Table 3: Water Supplies1
Projected Water Supplies - Volume3
Water
Quality
Drop-down
List
Total Right
or Safe
Yield*
(optional)
Additional
Detail on
Water Supply
Drop-down List
May use each category multiple
times.These are the only water
supply categories that will be
recognized by the WUEdata online
submittal tool
(Add additional rows as needed)
Potable Supplies
Non-Potable Supplies
eAR Reported Total Water Supplies
Optional (for comparison purposes)
1Projections are based on best available data at time of submitting the report and actual supply volumes could be different due to many factors. 2Units of measure (AF, CCF, MG) must remain consistent. 3When opting to provide other than monthly volumes (bi-monthly, quarterly, or annual), please see directions on entering data for Projected Water Supplies in the Table Instructions.
Notes: Palo Alto purchases 100% of its potable water from SFPUC; Palo Alto used the SFPUC's March 1, 2024 Water Supply Availability Update to determine water supply. Palo Alto supplies recycled water for irrigation of the municipal golf course, a park and some other minor applications. There is sufficient supply of both potable and recycled water to meet demand.
Total by Month (Potable)
Total by Month (Non-Potable)
= From prior tables
= Auto calculated
Water Supply Start Year: 2025 Volumetric Unit Used 2: AF Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Total by
Water
Supply Type
Purchased/Imported Water
San Francisco
Public
Utilities
Commission
Regional
Water
Supply
System
1310 1285 1307 1088 929 686 654 575 660 697 969 1135 11295 0 0
0 0
0 0
0 0
0 1310 1285 1307 1088 929 686 654 575 660 697 969 1135 11295 0 Recycled Water
Recycled
Water from
the Regional
Water
Quality
Control Plant
54 53 35 22 11 2 2 11 9 24 42 50 315
0 0
0 0
54 53 35 22 11 2 2 11 9 24 42 50 315 0
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Total
0 Table 3: Water Supplies1
Projected Water Supplies - Volume3
Water
Quality
Drop-down
List
Total Right
or Safe
Yield*
(optional)
Additional
Detail on
Water
Supply
Drop-down List
May use each category multiple
times.These are the only water
supply categories that will be
recognized by the WUEdata
online submittal tool
(Add additional rows as needed)
Potable Supplies
Non-Potable Supplies
eAR Reported Total Water Supplies
Optional (for comparison purposes)
1Projections are based on best available data at time of submitting the report and actual supply volumes could be different due to many factors. 2Units of measure (AF, CCF, MG) must remain consistent. 3When opting to provide other than monthly volumes (bi-monthly, quarterly, or annual), please see directions on entering data for Projected Water Supplies in the Table Instructions.
Notes: Palo Alto purchases 100% of its potable water from SFPUC; Palo Alto used the SFPUC's March 1, 2024 Water Supply Availability Update to determine water supply. Palo Alto supplies recycled water for irrigation of the municipal golf course, a park and some other minor applications. There is sufficient supply of both potable and recycled water to meet demand.
Total by Month (Potable)
Total by Month (Non-Potable)
= Auto calculated
= For manual input
Table 4(P): Potable Water Shortage Assessment1
Start Year: 2026 Volumetric Unit Used2: AF
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun3 Total
Anticipated Unconstrained Demand 1313 1287 1309 1090 931 687 655 576 661 699 971 1137 11316 Anticipated Total Water Supply 1313 1287 1309 1090 931 687 655 576 661 699 971 1137 11316 Surplus/Shortage w/o WSCP Action 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 % Surplus/Shortage w/o WSCP Action 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% State Standard Shortage Level0 0 0 0 0 0 0 0 0 0 0 0 0
Benefit from WSCP: Supply Augmentation 0.0
Benefit from WSCP: Demand Reduction 0.0
Revised Surplus/Shortage with WSCP 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 % Revised Surplus/Shortage with WSCP 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% = From prior tables
Planned WSCP Actions 4
1Assessments are based on best available data at time of submitting the report and actual volumes could be different due to many factors. 2Units of measure (AF, CCF, MG) must remain consistent. 3When optional monthly volumes aren't provided, verify Tables 2 and 3 use the same columns for data entry and are reflected properly in Table 4 and make sure to use those same columns to enter the benefits from Planned WSCP Actions. Please see directions on the shortage balancing exercise in the Table Instructions. If a shortage is projected, the supplier is highly recommended to perform a monthly analysis to more accurately identify the time of shortage. 4If you enter any WSCP Benefits, then you must enter the corresponding planned Actions into Table 5. = Auto calculated
= For manual input
Table 4(NP): Non-Potable Water Shortage Assessment1 Start Year: 2026 Volumetric Unit Used2: AF Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun3 Total
Anticipated Unconstrained Demand: Non-Potable 54 53 35 22 11 2 2 11 9 24 42 50 315 Anticipated Total Water Supply: Non-Potable 54 53 35 22 11 2 2 11 9 24 42 50 315 Surplus/Shortage w/o WSCP Action: Non-Potable 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 % Surplus/Shortage w/o WSCP Action: Non-Potable 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% Benefit from WSCP: Supply Augmentation 0.0
Benefit from WSCP: Demand Reduction 0.0
Revised Surplus/Shortage with WSCP 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 % Revised Surplus/Shortage with WSCP 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 1Assessments are based on best available data at time of submitting the report and actual volumes could be different due to many factors. 2Units of measure (AF, CCF, MG) must remain consistent. 3When optional monthly volumes aren't provided, verify Tables 2 and 3 use the same columns for data entry and are reflected properly in Table 4 and make sure to use those same columns to enter the benefits from Planned WSCP Actions. Please see directions on the shortage balancing exercise in the Table Instructions. If a shortage is projected, the supplier is highly recommended to perform a monthly analysis to more accurately identify the time of shortage. 4If you enter any WSCP Benefits, then you must enter the corresponding planned Actions into Table 5. = From prior tables
Planned WSCP Actions 4
July 1, 2026 to June 30, 2027
Enter Amount
(Drop-down
List)
Select % or
Volume Unit
Start Month End Month
NOTES:
Notes Section to be used
only for clarifying details, and
not for listing specific
actions. Actions must be
entred into table rows
1If you plan Supply Augmentation Actions then you must enter WSCP Benefits from Supply Augmentation Actions into Table 4. If you plan Demand Reduction Actions then you must enter WSCP Benefits from Demand Reduction Actions into Table 4. 2If an Action is planned to be implemented in multiple non-contiguous periods of the year, please make separate entries on multiple rows for the same action spanning the different implementation periods.
Table 5: Planned Water Shortage Response Actions
Add additional rows as needed
How much is action going to
reduce the shortage gap?
(Optional)
When is shortage response
action anticipated to be
implemented 2?Is action
already being
implemented?
(Y/N)
ACTIONS1: Demand Reduction, Supply
Augmentation, and Other Actions.
(Drop-down List)
These are the only categories that will be
accepted by the WUEdata online
submittal tool. Select those that apply.
Anticipated Shortage
Level
Drop-down List of
State Standard Levels (1 -
6) and Level 0 (No
Shortage)
Palo Alto currently inplements permanent water use restrictions according to the Palo Alto Municipal Code Section
12.32.010 https://codelibrary.amlegal.com/codes/paloalto/latest/paloalto_ca/0-0-0-69362#JD_Chapter12.32. There is currently no water shortage projected for FY 2027 in Table 4(P).