Project Details

Location: Randolph E. Harley Power Plant, St. Thomas, United States Virgin Islands
Customer: Virgin Islands Water and Power Authority (WAPA)
Solution: 8 containerized SWRO desalination units, build-own-operate (BOO) contract
Capacity: 2 MGD (7,570m3/d)


Because of a critical shortage of drinking water, a solution had to be provided as soon as possible to fill local needs until the completion of a permanent plant, already underway.

Containerized Seawater Reverse Osmosis Desalination Plant

When an existing thermal desalination plant failed, an emergency supply of drinking water was needed as soon as possible

When an old, inefficient thermal desalination plant broke down on St. Thomas in the United States Virgin Islands (USVI), the VI National Guard was able to quickly provide eight desalination units to alleviate the most acute impacts of the crisis. The 320,000 GPD (1,208 m3/d) of drinking water they provided, however, was only a fraction of the 1.8 MGD (6,813 m3/d) needed to supply businesses, 5,500 residents, and hundreds of thousands of tourists.

In response, the VI Water and Power Authority (WAPA) reached out to Seven Seas Water Group to bring life and business on the island back to normal before the peak of the tourist season.

Seven Seas quickly set a two-phase installation in motion. The first phase was operational only 29 days from the finalization of contracts. Only 19 days after that, the complete plant, comprised of eight containerized units, was supplying the 2 MGD (7,570m3/d) of drinking water that WAPA had specified. Empty WAPA storage tanks began to fill, leaving the island free of water worries in peak tourist season.

At no upfront cost, a build-own-operate (BOO) arrangement was able to provide reliable water at a guaranteed price. The temporary containerized plant helped supply critical water to VI residents and tourists until the permanent SWRO facility was complete. The new Seven Seas facility now produces all the drinking water in St. Thomas as well as the high-purity process water required to operate their power plant.

Water When You Need It, Where You Need It

Seven Seas is able to step in and quickly resolve water emergencies wherever and whenever they happen due to our experienced staff of experts and an extensive contact and supplier network cultivated over many years.

The feat Seven Seas accomplished on St. Thomas exemplifies how the company can quickly respond to water emergencies with highly flexible, performance-based offerings, including Water as a Service®, concessions, and BOO, BOOT, and P3 contracts. Contact Seven Seas when any type of water emergency strikes.

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