Right now, in a semiconductor fab somewhere in Asia, a machine is rinsing a silicon wafer with water cleaner than anything you have ever drunk. The water that comes off it is filthy. A few years ago, most of it would have been dumped. Today, 99% of it loops back around. The company making that loop happen is Gradiant, and it is having a very good decade.
Gradiant does not sell software you can demo or a gadget you can hold. It sells the thing underneath everything else - water that has been pushed, filtered, oxidized, and coaxed back to usefulness. The unglamorous middle of the supply chain. Which is, of course, exactly where the money turned out to be.
"AI is re-making the global economy, but behind every chip and every data center lies massive and growing water demand."
- Anurag Bajpayee, Co-Founder & Executive Chairman01 / THE PROBLEMThe water was always the bottleneck
Everyone worries about energy. Fewer people worry about water, which is strange, because you cannot make a chip, a bottle of soda, a kilo of lithium, or a barrel of refined fuel without enormous quantities of it. Industry is thirsty, and the planet is not refilling the glass.
The catch is that industrial water is rarely simple H2O. It arrives loaded with salt, metals, oils, and increasingly, the so-called forever chemicals that ordinary plants cannot remove. The conventional answer was to use fresh water once and discharge the mess. That worked until droughts spread, regulators tightened, and the bill for "once and done" came due.
"We work with ultracontaminated water, and we can also provide ultrapure water."
- Anurag BajpayeeTranslation: they take the worst water in the building and hand back the best. The dirty secret of clean industry.
02 / THE BETTwo MIT grads who grew up wanting a glass of water
Anurag Bajpayee and Prakash Govindan met as graduate students at MIT. Both grew up in India, both knew water scarcity as a fact of life rather than a headline. Govindan's doctoral work, supervised by Professor John Lienhard, produced a desalination method that mimics the natural rain cycle - the company's first technology, Carrier Gas Extraction.
In 2013 they licensed their research, worked with MIT's Deshpande Center to de-risk it, and founded Gradiant. Their first paying problem was not glamorous: wastewater from Texas oil and gas wells. Brine so harsh most systems choke on it. They started where the water was hardest, which turned out to be a smart place to learn.
"R&D is in our DNA."
- Prakash Govindan, Co-Founder & CEOThe Gradiant Timeline
03 / THE PRODUCTA toolbox, not a single trick
Most water companies have one hammer. Gradiant brought a whole drawer. Carrier Gas Extraction for brutal brines. Counterflow Reverse Osmosis - branded RO Infinity - to squeeze far more clean water out of each batch. Free Radical Oxidation to destroy PFAS. Selective Contaminant Extraction to pull out the valuable bits. And SmartOps, an AI layer that runs the plants, predicts failures, and doses chemicals so a human does not have to guess.
The clever part is what happens to the leftovers. Gradiant does not just remove lithium and nickel from wastewater - it recovers them, battery-grade, and hands them back as a resource. The pollution becomes inventory. Wilde would have approved of the irony: the cleanest way to make money from water is to sell what everyone else throws away.
RO Infinity (Counterflow RO)
Pushes reverse osmosis to far higher recovery, shrinking brine and stretching every drop.
SmartOps AI
Measures, predicts and controls treatment facilities in real time - predictive maintenance for water.
Free Radical Oxidation
Advanced oxidation that destroys PFAS "forever chemicals" rather than just relocating them.
Minerals & Lithium Recovery
Extracts battery-grade lithium and nickel from wastewater - turning a liability into supply.
04 / THE PROOFThe numbers that made investors thirsty
Claims are cheap; Gradiant brought receipts. It has built more than 2,500 end-to-end systems worldwide. Its customer list reads like a roll call of the modern economy - Coca-Cola, Tesla, and Taiwan Semiconductor Manufacturing Company among them. At chip fabs, it raised water recycling from roughly 30% to 99%. Across its fleet, it helps reuse about 2 billion gallons of water a day and avoids withdrawing another 2 billion.
Recycling, Before & After Gradiant
"Gradiant is the only water company with truly differentiated technology, operating profitably and at scale."
- Nader Motamedy, Managing Partner, Safar Partners05 / THE MISSIONWater for industry, then water for everyone
Gradiant frames its mission plainly: help industries shrink their water footprint by consuming less, reclaiming resources, and renewing wastewater. The longer vision is broader - making industrial water sustainable so there is enough left over for the rest of society. It is a B2B company with a public-good streak, which is a comfortable place to stand when droughts keep making the news.
The 2026 Series E - led by Safar Partners and Australia's Hostplus Superannuation Fund, with ClearVision Ventures - is pointed squarely at the AI build-out. Data centers and chip fabs are extraordinarily thirsty, and Gradiant intends to be the plumbing under the boom. The funds go toward acquisitions, R&D, scale, and, eventually, an IPO.
06 / WHY IT MATTERS TOMORROWBack to that wafer
Return to the fab. The wafer is rinsed, the water is filthy, and then it isn't - it loops back around, 99% of it, ready to do the job again. Multiply that by 2,500 systems and you get a company that took the least fashionable corner of cleantech and turned it into a $2 billion business. Not by inventing thirst, but by refusing to waste what was already in the building.
The world is going to need a great deal more water than it has, and a great deal more chips than it can currently cool and clean. Gradiant is betting those two facts collide in its favor. So far, the bet keeps paying. The water industry finally has its unicorn, and it smells faintly of brine.