Pure Water
Southern California
Long Beach City Council Meeting
September 19, 2023
2 Working collaboratively with
communities impacted by
construction of the Pure Water
program, respectfully seeking input,
and building trust and positive
relationships along the way
Pure Water Southern California
How it works
①
Used water
(wastewater)
from homes,
businesses,
and industries
in LA County
②
Cleaned at
Sanitation
Districts’ Joint
Water Pollution
Control Plant
③
Purified at
Metropolitan’s
advanced
water
purification
facility
④
Conveyed
through over
60 miles of
pipeline to
groundwater
basins,
industries, or
Metropolitan’s
drinking water
plants
⑤
A new climate-
resilient
source of
water for
Southern
California
Pure Water Southern California
In numbers
Up to 150 million
gallons per day or
155,000 acre-feet
per year
Enough water
for over
1.5 million
people
One of the
largest
programs of its
kind in world
Program Benefits
Water Supply Benefits
Reduces Reliance on
Imported Supplies
Economic Benefits
Environmental Benefits
Program Partners
Metropolitan Member Agencies
Groundwater Basin Managers
Colorado River Partners
Other Key Partners
Program Overview
• Joint Water
Pollution Control
Plant
• Advanced Water
Purification
facility
• Conveyance
pipelines
• Pump stations
• Spreading
facilities
• Injection wells
• A regional water
reuse system
Reach 2
Program Schedule
Pure Water Southern California Core Outreach Activities Media & Communications
Demonstration Facility Tours
School Programs
Community Events
Stakeholder & Community
Briefings
Partnership with Community
Based Organizations
Water Supply Benefits to Long Beach
• Ongoing coordination
with Long Beach utilities
• A replenishment source
to sustain the City’s
groundwater resources
• Collaboration on pipeline
crossings at the LA River
& 710 freeway
Working in Partnership with the
City Of Long Beach
• Pipeline Alignment Considerations:
o Traffic impacts
o Business access & continuity
o Residential impacts
o Proximity to schools
o Construction duration
o Utility congestion
o Proximity to fault zones & oil well fields
o Previous City comments
o Coordination with other City
projects/goals
Conveyance Alignment
Advanced Water
Purification Facility
Carson
Long Beach
Lakewood
Legend
110 Fwy
LA River
710 Fwy
Alignment through Long Beach
3.8 miles in Long Beach
Tunneling at major crossings
1-2 years to construct
between 2026 & 2030
Shortest construction duration of
alternatives considered
Minimizes interference with
underground utilities & traffic
Minimizes impacts to schools,
residences & businesses
Legend
Del Amo Blvd
Cherry Blvd
South St
Paramount Blvd
Potential Pure
Water Pipeline
Long Beach
Example of Open Cut Construction
Typical Open Cut Construction Work Area
Photos courtesy of Black & Veatch, 66” steel water pipe
Example of Tunnel Access Pit
Second Lower Feeder Access Site
Photo courtesy of Black & Veatch, 78” steel water pipe
Estimated Construction Duration within
City of Long Beach
Segment Potential Impacts Pipeline
Length
Construction
Method
Construction
DurationResidential Commercial Other
Crossing 710
Freeway &
LA River
~57 units Low
3 schools,
1 police station,
2 churches
0.5 mile Tunnel 8-11 months
Del Amo Blvd 2.2 miles Tunnel
& Open Cut 9-14 months
Paramount Blvd &
South St 1.1 miles Tunnel
& Open Cut 5-7 months
Total 3.8 miles 1-2 years
Next Steps
• Obtain City Council approval of
alignment through Long Beach
• Metropolitan to work with City to optimize
construction plans
• Metropolitan commits to minimize potential
construction impacts
• Initiate preliminary design
• Conduct utility/field investigations
• Coordinate with Long Beach at LA River
crossing
• Establish service connection requirements
• Continue coordination with City
• Potential for jobs development & training
• Address potential community impacts
• Outreach efforts throughout life of the
project