In April, Steve Wynn announced plans to tear up the golf course that lies behind two of his Las Vegas hotels and replace it with a 38-acre man-made lake, about the size of 30 American football fields. Rising from the middle of the lagoon, Wynn said during a conference call last week, will be a 10-story mountain, accessible by zip line and electric ferry, that will serve as a launching point for nightly fireworks.

Wynn will bring the pyrotechnics. The water comes courtesy of Crystal Lagoons, a Miami-based company that licenses technology for what is either the greatest real estate amenity since running water or the most chimerical since the Fountain of Youth.

The company was founded a decade ago by real estate developer Fernando Fischmann. Frustrated by rough Pacific Ocean tides that made the coastline too dangerous for swimming, he developed technology for cleaning large bodies of water as part of his plan to build an oceanfront community in his native Chile. Today, the company boasts 60 lagoons in operation and says an additional 250 are in development from Singapore to Sharm el-Sheikh, Egypt. The company plans to open offices in Dallas and Los Angeles as it seeks to seal 40 U.S. deals by the end of the year.

Selling clear-water lakes to real estate developers is just a ripple on the surface of Fischmann's ambitions. He said he's working with students at MIT’s Sloan School of Management on a business model for building lagoons in public parks and is hatching plans to build "floating lagoons" on top of bodies of water that are currently unsuitable for swimming. His most audacious proposal is a system to cool an electric power plant and use the excess heat to power a desalination facility.

The dream is "to produce a huge impact,” Fischmann said. “Freshwater production is probably the most important problem facing the world."

Getting power companies to embrace the technology may take time, Fischmann conceded. In the meanwhile, a Boston Consulting Group study commissioned by Crystal Lagoons shows demand for 14,000 artificial lakes around the world.

“You will see people taking the subway with swimming suits and sandals and going to the beach somewhere in the city,” Fischmann said.        

You can’t treat a mile-long lake as you would an oversize swimming pool and simply dump in a lot of chlorine. Fischmann, who trained as a bio-chemist, developed a system for monitoring the water chemistry in real time and delivering chemicals in tactical strikes on an as-needed basis. The company uses a special film to minimize evaporation and applies a UV coating on the bottom of the pools to tint them blue.

The lakes, which cost about $250,000 an acre to build, require a fraction of the water needed to keep a golf course green. The company licenses its technology to developers in return for a single-digit percent of the project sales. Fischmann wouldn’t say how much money he’s making (he also withheld  his age and other personal information), but said he recently insured the company’s intellectual property for more than $2 billion.

"I think that people will like that it’s clear and clean and beautiful to look at," said Jackie Soffer, co-chairman of Turnberry Associates, which is building two 10-acre pools using Crystal Lagoons technology at SoLe Mia, a $4 billion mixed-use project her company is co-developing in Miami with LeFrak Organization. Beyond the visual appeal, Soffer hopes the lakes will help  developers woo more active home buyers in a market saturated with golf courses.

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