
What Is the GRESB Assessment?
In 2023, Seven Seas Water Group underwent its third GRESB Infrastructure Asset Assessment. This global evaluation provides objective scoring and peer benchmarking of ESG performance. Seven Seas attained GRESB’s top five-star rating with a score of 100/100, ranking 1st among 6 peers.
We believe our WaaS® model and the strength of Morgan Stanley backing are an unbeatable combination when it comes to delivering updated water infrastructure, and our GRESB rating highlights the ESG value of all of our projects.





Latest Sustainability Project
Lima, St. Thomas
Many phases of the Seven Seas’ water and wastewater treatment operations are benefiting from efficiencies. At our Lima, St. Thomas plant, 20 solar panels have been installed, with an estimated 71% offset of annual usage. Our impact is estimated as 13,843 kWh annually avoided from the grid, the equivalent of 9.8 metric tons of carbon dioxide.
Our Water and Wastewater Solutions Make a Positive Environmental Impact
Energy-Efficient Plant Designs
The energy recovery systems in Seven Seas desalination plants deliver up to a 60% energy savings for a significantly smaller carbon footprint compared to conventional structures. In 2021, these systems saved 62.5 MWh of energy and prevented the release of 32 tons of carbon dioxide into the atmosphere.




Reducing Reliance on Fossil Fuels
Seven Seas is actively pursuing carbon footprint reduction and phasing in alternative energy sources — including solar energy where viable — in all of our operations. In Trinidad, we are installing more than 2,000 watts of solar lighting, and regularly conduct energy audits on selected sites as we work toward our 2050 carbon net-zero goal companywide. In 2023, 5 MWh of the energy we use is sourced from renewable energy, which is a 400% increase from the previous year — the equivalent of 3.5 metric tons of CO2 avoided.
Because of Seven Seas operations, many service areas no longer need to rely on energy-inefficient water tanker trucks, eliminating up to 140,000 tons of carbon dioxide equivalent pollution each year.


Sustainable Production
The shipping industry is responsible for almost 3% of the world’s total CO2 emissions. We use powerful logistics strategies to consolidate shipments and reduce our carbon footprint and landfill waste. Seven Seas actively participates and promotes waste recycling and reuse wherever opportunities exist.


PROJECT SPOTLIGHT
Protecting Marine Life in Trinidad
In the island nation of Trinidad and Tobago, a 6.7 MGD (25,379m3/d) Seven Seas desalination plant serves the borough of Point Fortin. Seven Seas initiated an environmental management program to monitor effluent quality, including benthic fauna surveys to monitor the effect of brine outfall on the marine ecosystem. Seven Seas subsequently made adjustments to the plant to protect sensitive marine life.
According to a Harvard study, the project produces fresh water of exceptional quality and has outperformed industry norms in monitoring its effluent. The researchers concluded, “This project creates a clear net positive impact on the community, achieving water supply for 29,000 people.”
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