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Poseidon Water LLC specializes in the development and financing of large-scale water infrastructure projects, with a primary focus on seawater desalination and water treatment. The company partners with public agencies to deliver reliable and drought-proof sources of fresh water, addressing critical water supply challenges. Poseidon Water is known for its expertise in project management, permitting, and securing innovative financing for complex water projects, contributing to water security and sustainability in the regions it serves.
Serves as the central hub for strategic planning, project development, finance, engineering oversight, and corporate administration for Poseidon Water's desalination and water infrastructure projects.
Modern office space designed to foster collaboration, located in a business park known for its proximity to a skilled workforce and environmental technology companies. May feature sustainable design elements reflecting the company's mission.
A mission-driven and innovative work environment, focused on addressing critical water challenges through expertise and collaboration. Employees are passionate about sustainability and engineering excellence.
The Carlsbad headquarters is strategically positioned in a water-scarce region, underscoring the company's direct involvement in providing solutions where they are most needed. It's central to their operations in developing key projects like the Claude "Bud" Lewis Carlsbad Desalination Plant.
While Poseidon Water LLC's primary operations are concentrated in the United States, particularly California, their expertise in developing large-scale water infrastructure, desalination technology, and project financing has global relevance. They support functions such as project development, engineering, regulatory affairs, finance structuring, and community outreach, primarily for domestic projects aiming to secure local water supplies.
5010 Avenida Encinas, Suite A
Carlsbad
CA
USA
Address: 2120 Main Street, Suite 250, Huntington Beach, CA 92648
To manage and advance the development of critical new water supply sources for Orange County, addressing regional drought vulnerabilities and enhancing water reliability.
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As of April 2025, Poseidon Water LLC' leadership includes:
Poseidon Water LLC has been backed by several prominent investors over the years, including:
Based on available public information, there have been no widely reported major executive hires or departures at Poseidon Water LLC in the last 12 months. The executive team structure appears consistent, focused on ongoing operations and project development.
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Poseidon Water LLC likely utilizes common corporate email formats. The most probable formats are based on employee names, such as first initial followed by last name, or first name separated from last name by a dot, using the @poseidonwater.com domain.
[first_initial][last]@poseidonwater.com (e.g., jdoe@poseidonwater.com) or [first].[last]@poseidonwater.com (e.g., jane.doe@poseidonwater.com)
Format
aahmad@poseidonwater.com
Example
85%
Success rate
Los Angeles Times • May 12, 2022
The California Coastal Commission unanimously voted to deny a crucial permit for Poseidon Water's proposed $1.4-billion desalination plant in Huntington Beach, citing concerns over environmental impacts, marine life, and the project's necessity given other water sources....more
Times of San Diego • October 26, 2023
The Claude 'Bud' Lewis Carlsbad Desalination Plant, developed by Poseidon Water and operated by IDE Technologies, celebrated eight years of operation, consistently providing approximately 50 million gallons of high-quality drinking water per day, which is about 10% of San Diego County's water needs....more
Water & Wastes Digest • February 15, 2024
Industry publications continue to recognize the Carlsbad Desalination Plant for its operational efficiency and contributions to regional water security, emphasizing its role as a sustainable source of potable water for Southern California....more
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