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Martin Riese doesn't sip water—he slurps it. But only after swirling it around in stemmed glassware, sniffing it, and examining it with his every sense. If the liquid in his glass were another shade, any shade at all, onlookers might guess he's a trained sommelier tasting wine—and they'd be half right. Riese is a water sommelier.

“When I started this whole water concept in 2012, everybody said, 'Only in L.A. there is a water sommelier,'" says Riese, who received his certification from the German Mineral Water Trade Association. “And then I said to the people, 'Only in L.A. do people think water has no value, but they're living in the desert.'"

It's an idea easy to laugh at (and many have made Riese the butt of their jokes), but as natural resources dry up globally and the bottled-water industry booms to the tune of a projected $280 billion by 2020, water experts—be they sommeliers or scientists—skilled at detecting water quality and taste may prove an asset. (Here are six plastic-free ways to travel with safe drinking water.)

Water elevated: That's Riese's motivator, for the masses to ascribe value to what he calls the “most important beverage on this planet." To that end, Riese introduced a water menu with dozens of options to Ray's and Stark Bar in Los Angeles in 2013, and later a two-hour, $50 water tasting at Patina, the restaurant inside the Frank Gehry-designed Walt Disney Concert Hall. This hefty price-tag, comparable to a wine tasting, urges consumers to rethink the value of a precious resource that many of us take for granted. It's the old Picasso maxim at work: With education comes appreciation. And Riese is nothing short of exuberant when it comes to our most fundamental life source. (Learn more about the world's clean water crisis.)