Poseidon Water, a massive desalination project proposed for the Pacific coast in Huntington Beach, has been in the works for more than two decades. A critical vote is expected for the project next month.

The Poseidon Huntington Beach Seawater Desalination Plant, proposed for the Pacific coast in Huntington Beach, will face a critical vote by the California Coastal Commission (CCC) in May.
The controversial desalination project has been in the works for more than two decades, sparking controversy between two competing versions of sustainability.
Writing for the Los Angeles Times, Ian James summarizes the controversy:
The long-running fight over the proposal encompasses contentious issues such as the effects on marine life, power requirements and whether the low-lying site is vulnerable to sea-level rise, as well as the company’s heavy political lobbying for the lucrative project.
And:
At the heart of the debate, there are fundamental arguments about whether Orange County really needs the water, how the area should adapt to worsening droughts with climate change, and whether the costs would be a reasonable investment to secure reliable water or an exorbitant megaproject that would mean higher water rates for decades to come.
Leading the opposition, according to James, is a coalition of environmental groups called Stop Poseidon. California Coastkeeper Alliance, California Coastal Protection Network, Orange County Coastkeeper, and the Surfrider Foundation, comprise the coalition, along with others.
The feature-length article provides a lot more detail about the debate ahead of next month’s historic vote by the CCC.
Planetizen coverage of Poseidon Water:
- Opinion: California Should Invest In Housing, Not Dubious Desalination Projects (January 2022)
- Environmentalists Object to California Desalination Plan (March 2021)
- Desalination Projects Get a Big Boost in California (January 2018)
- What Happened to all those Desalination Plants Proposed for California? (November 2016)
FULL STORY: Drought boon or boondoggle? Critics blast Poseidon desalination plan as crucial vote looms

What ‘The Brutalist’ Teaches Us About Modern Cities
How architecture and urban landscapes reflect the trauma and dysfunction of the post-war experience.

‘Complete Streets’ Webpage Deleted in Federal Purge
Basic resources and information on building bike lanes and sidewalks, formerly housed on the government’s Complete Streets website, are now gone.

The VW Bus is Back — Now as an Electric Minivan
Volkswagen’s ID. Buzz reimagines its iconic Bus as a fully electric minivan, blending retro design with modern technology, a 231-mile range, and practical versatility to offer a stylish yet functional EV for the future.

Healing Through Parks: Altadena’s Path to Recovery After the Eaton Fire
In the wake of the Eaton Fire, Altadena is uniting to restore Loma Alta Park, creating a renewed space for recreation, community gathering, and resilience.

San Diego to Rescind Multi-Unit ADU Rule
The city wants to close a loophole that allowed developers to build apartment buildings on single-family lots as ADUs.

Electric Vehicles for All? Study Finds Disparities in Access and Incentives
A new UCLA study finds that while California has made progress in electric vehicle adoption, disadvantaged communities remain underserved in EV incentives, ownership, and charging access, requiring targeted policy changes to advance equity.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
City of Albany
UCLA Lewis Center for Regional Policy Studies
Mpact (formerly Rail~Volution)
Chaddick Institute at DePaul University
City of Piedmont, CA
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research