Pasadena Water and Power
Temporary Level 4 Water Supply
Shortage Plan
Public Hearing
City Council - January 25, 2016
Item 17
MWD Shutdown
Pasadena Water and Power
• Metropolitan Water District (MWD) will
suspend water deliveries to Pasadena and
other member agencies:
> Start date: Monday, February 29, 2016
> Scheduled Completion: Wednesday, March 9, 2016.
• About 60% of Pasadena’s water is imported
from MWD
• Pasadena must rely solely on local
groundwater supplies and water stored in
reservoirs during the shutdown
2
MWD Construction
Pasadena Water and Power
• MWD is constructing a new ozone treatment facility at their
Weymouth Treatment Plant in the city of La Verne.
• Plant will be shut down for 10 days to allow for switchover.
• No imported water will be delivered to Pasadena during the
shutdown.
3
Water Supply/Demand
Pasadena Water and Power
Supply Source
Reservoirs
Five Local Wells
Total
Ten-Day Supply
(MG)
77 MG
103 MG
180 MG
• Typical March Demand
Daily Supply
(MGD)
7.7 MGD
10.3 MGD
18 MGD
• Past “Level 4” Demand
> Average: 23-24 MGD
> Wet years: 20 MGD
> 3/2011: 15.2 MGD (wet)
> 2/2013: 18.3 MGD (dry)
Target demand: ~16 MGD (30% < average March demand
4
Water Conservation
Pasadena Water and Power

Under Current Level 2 Restrictions:

The last watering day prior to the MWD shutdown
would be Saturday, February 27, 2016
 PWP would have insufficient time (only one day) to
completely fill local reservoirs

Staff recommends implementing the Level 4
Water Supply Shortage Plan effective
February 25, 2016
5
Supply Scenarios
Pasadena Water and Power
6
Water Shortage Plan Levels
Pasadena Water and Power
Level 1
Level 2
Level 3
Level 4
Watering Days
Per Week
3 summer
1 winter
2 summer
1 winter
1 summer
1 winter
No watering or irrigating
Obligation to Fix
Leaks, Breaks or
Malfunctions
72 hours
after
notification
48 hours
after
notification
36 hours
after
notification
24 hours
after notification
Additional
Prohibitions
N/A
Filling
ornamental
lakes/ponds
7
Filling
ornamental
lakes/ponds
Filling ornamental lakes,
ponds, residential pools
or spas
No new potable water
service provided
Public Outreach
Pasadena Water and Power
• City/PWP publications - CM Newsletter, Pasadena In
Focus, PWP e-newsletter, flyers
• Citywide mailer to all PWP customers
• Direct outreach to City departments, large customers,
field reps and community groups
• Updated phone system messages
• Customer Service Center and PWP Call Center
• PWP website and social media - daily updates
• Billboards, bus shelters, yard signs, mobile signs
• Joint press conference with MWD and other affected
water agencies
• Ads in local print publications
8
Action Items
Pasadena Water and Power
1. Declare CEQA Exemption
2. Determine water supply shortage emergency exists.
3. Temporarily implement Level 4 Water Supply Shortage
Plan measures starting February 25, 2016 until MWD
imported water supply is restored.
4. Determine current conservation measures will remain in
effect.
5. Resume Level 2 Water Supply Shortage Plan (including
“additional measures”) after termination of temporary
Level 4 Water Supply Shortage Plan.
6. Adopt implementation by way of proclamation.
9
Backup Slides
Pasadena Water and Power
10
Supply and Storage
At Target Water Demand (16 MGD)
Pasadena Water and Power
11
Supply and Storage
At 2013 MWD Shutdown Demand
Pasadena Water and Power
12
Supply and Storage
Target Demand; Initial Storage @75%
Pasadena Water and Power
13