Top 10 Wastewater treatment plant Suppliers, Manufacturers, Wholesalers and Traders in Austria

When it comes to industrial wastewater, few suppliers in Austria have the track record of AquaTech Solutions. Founded in 1998 by a team of environmental engineers from Vienna University of Technology, this family-owned business has grown from a small startup to a go-to partner for some of Austria's biggest manufacturers, including automotive suppliers in Graz and pharmaceutical giants in Linz. What really sets AquaTech apart is their refusal to take a "one-size-fits-all" approach. Walk into their Vienna headquarters, and you'll find engineers huddled over blueprints, customizing systems for clients with unique challenges—like a chemical plant needing to remove 99.9% of heavy metals from its effluent or a food processing facility dealing with high organic loads from dairy waste.

Key Products: Effluent treatment machine equipment, water process equipment, membrane bioreactors, and UV disinfection systems

Take their flagship effluent treatment machine equipment, for example. Designed for high-contaminant industrial streams, these systems combine physical separation (like screening and sedimentation) with advanced biological processes and even chemical oxidation for tough pollutants. Their water process equipment line is equally impressive, including everything from pre-treatment filters that remove large particles to cutting-edge membrane bioreactors that produce water clean enough for reuse in manufacturing—saving clients money on freshwater bills while reducing their environmental footprint. "We don't just sell equipment; we solve problems," says CEO Maria Höller. "Last year, we helped a metalworking client cut their wastewater disposal costs by 40% by redesigning their treatment line. That's the kind of impact we live for."

If there's one word that defines EcoFlow, it's "efficiency." Based in Graz, this supplier has made a name for itself by creating wastewater treatment systems that do more with less—less energy, less space, and less maintenance. Founded in 2005, they've built a loyal following among municipalities and commercial clients, from the bustling cafes of Vienna's city center to the ski resorts of Innsbruck. What's their secret? A focus on modular, scalable design. Whether you're a small town of 5,000 people or a shopping mall with 10,000 daily visitors, EcoFlow can tailor a system that fits your needs without overcomplicating things.

Key Products: Water process equipment, compact filtration systems, sludge dewatering units, and energy-recovery biogas systems

Their water process equipment line is a hit with clients short on space. Take their "EcoCompact" series: a skid-mounted treatment unit that handles up to 500 cubic meters of wastewater per day, yet fits in the back of a standard shipping container. Perfect for retrofitting older buildings or tight urban lots. And when it comes to energy efficiency, EcoFlow doesn't just talk the talk. Their systems use variable-speed pumps, LED lighting, and even heat recovery from treatment processes to cut energy use by up to 30% compared to conventional setups. "A lot of clients come to us worried about rising energy costs," says sales director Thomas Berger. "We show them that a better wastewater system can actually be a profit center, not just an expense." It's no wonder they've been awarded the Austrian Energy Efficiency Prize twice in the last five years.

Mining, chemical processing, and heavy industry are the backbone of many Austrian regions—but they also produce some of the toughest wastewater challenges. That's where Alpine Water Treatment Engineers comes in. Based in Linz, a hub for Austria's industrial heartland, this supplier specializes in tackling the "problem child" of wastewater: streams loaded with heavy metals, toxic chemicals, and complex organic compounds that standard systems can't handle. Since 1982, they've worked with clients like steel mills in Styria and chemical plants in Upper Austria, earning a reputation for turning "untreatable" water into compliant, even reusable, resources.

Key Products: Effluent treatment machine equipment, advanced oxidation processes (AOPs), ion exchange systems, and water process equipment for high-solids wastewater

What really impresses clients is Alpine's expertise in heavy metal removal. Their effluent treatment machine equipment uses a proprietary "multi-stage precipitation" process that targets metals like lead, mercury, and cadmium with pinpoint accuracy, achieving removal rates of 99.99%—well above Austria's strict discharge limits. For chemical plants dealing with solvents or pesticides, their advanced oxidation systems use UV light and hydrogen peroxide to break down even the most persistent organic pollutants. "We once had a client in the chemical valley of Krems who'd been struggling with a pesticide byproduct for years," recalls chief engineer Franz Schmid. "Within three months, our system had them compliant, and now they're reusing 60% of their treated water in production. That's the Alpine difference."

When it comes to large-scale wastewater treatment, few names carry as much weight as Danube Environmental Technologies. Based in Krems an der Donau, a historic city on the banks of its namesake river, this supplier has built a reputation for delivering turnkey solutions for some of Austria's biggest infrastructure projects. From the Vienna Central Wastewater Treatment Plant (one of Europe's largest, serving 2 million people) to a petrochemical complex in Schwechat, Danube Environmental doesn't just supply equipment—they design, build, and operate entire treatment plants from the ground up.

Key Products: Water process equipment, sequential batch reactors (SBRs), large-scale effluent treatment machine equipment, and automated control systems

What sets them apart is their ability to handle complexity. Take their work on the Vienna plant: a sprawling facility that treats 400,000 cubic meters of wastewater daily, using a mix of biological treatment, chemical precipitation, and advanced filtration. Danube Environmental supplied the core water process equipment, including custom-designed SBRs that adapt to fluctuating flow rates (a must in a city with variable tourism seasons). They also integrated a state-of-the-art SCADA control system that monitors every step of the process, from pH levels to energy use, allowing operators to tweak performance in real time. "Big projects require big thinking," says project director Karl Heinz. "We don't just deliver equipment—we deliver peace of mind. Our clients know their plant will run efficiently for decades, not just years."

In a world where "sustainability" is often just a buzzword, GreenStream Process Equipment lives and breathes it. Based in Salzburg, this supplier has made circular economy principles the cornerstone of everything they do. Founded in 2010 by a team of environmental scientists, they specialize in helping clients turn wastewater from a "waste product" into a resource—whether that's reusing treated water for irrigation, recovering nutrients for fertilizer, or even generating biogas from sludge. It's a approach that resonates with Austria's agricultural and food & beverage industries, where water scarcity and nutrient management are top priorities.

Key Products: Water process equipment, biological treatment systems, nutrient recovery units, and effluent polishing machines

Take their work with Austrian breweries, for example. Beer production is water-intensive—up to 10 liters of water for every liter of beer—and the wastewater is rich in organic matter and nutrients. GreenStream's biological treatment systems break down those organics, while their nutrient recovery units extract nitrogen and phosphorus to sell as fertilizer to local farms. "A brewery in Salzburg now saves €50,000 a year on water bills and another €20,000 by selling their recovered nutrients," says sustainability director Anna Müller. "That's a win for their bottom line and a win for the planet." Their water process equipment also includes "closed-loop" systems, where treated wastewater is reused in rinsing or cooling, cutting freshwater use by up to 70%. For farmers in Tirol, struggling with droughts in recent years, GreenStream's irrigation-ready effluent treatment machine equipment has been a game-changer, turning farm runoff into a reliable water source for crops.

Vienna isn't just Austria's capital—it's a global hub for high-tech manufacturing, from semiconductors to medical devices. And in these industries, "ultra-pure" water isn't a luxury; it's a necessity. Enter Vienna Water Tech GmbH, a supplier that's made a name for itself by delivering water treatment systems that meet the strictest purity standards, often exceeding even EU guidelines. Founded in 1992 as a spin-off from Vienna University's Institute for Water Quality, they've built a client list that includes some of the world's most demanding tech companies, including a major semiconductor plant in Villach and a medical device manufacturer in Klosterneuburg.

Key Products: Effluent treatment machine equipment, ultrafiltration (UF) systems, reverse osmosis (RO) units, and water process equipment for high-purity applications

What really stands out about Vienna Water Tech is their focus on "zero discharge." For industries where even trace contaminants in effluent can harm the environment (or violate regulations), their effluent treatment machine equipment uses a multi-barrier approach: first, physical filtration to remove solids, then RO to strip out dissolved salts and organics, and finally UV disinfection to ensure pathogens are eliminated. The result? Water so pure it can be reused in production, with zero liquid waste sent to sewers. "Our semiconductor clients need water with less than 1 part per billion of contaminants," explains technical director Peter Schmidt. "That's 100 times purer than distilled water. Our systems deliver that, day in and day out." With ISO 14001 certification and a team of PhD-level engineers, Vienna Water Tech is the gold standard for high-tech water treatment in Austria.

Not every community or business needs a massive wastewater treatment plant. For small towns, mountain resorts, or boutique hotels, space, budget, and technical expertise are often limited. That's where EcoPure Systems Austria comes in. Based in Innsbruck, this supplier specializes in "plug-and-play" wastewater solutions designed for simplicity, speed, and reliability. Founded in 2012 by a team of engineers who saw a gap in the market, they've become the go-to choice for clients who want effective treatment without the hassle of complex installations or ongoing maintenance.

Key Products: Compact effluent treatment machine equipment, modular water process systems, solar-powered treatment units, and mobile testing kits

Take their "EcoMini" series: a self-contained effluent treatment machine that fits in a 20-foot shipping container, handles up to 100 cubic meters of wastewater per day, and can be installed in under two weeks—no civil engineering required. Perfect for a ski chalet in St. Anton or a rural school in Vorarlberg. And for off-grid locations, EcoPure offers solar-powered versions that run entirely on renewable energy, with battery backups for cloudy days. "We had a client in the Austrian Alps who'd been trucking wastewater down the mountain for years—it was costing them €10,000 a month," says founder Markus Wagner. "We installed an EcoMini with solar panels, and now they treat on-site for under €500 a month. That's the kind of impact we love to make." Their water process equipment is also designed for "set it and forget it" operation, with remote monitoring via a smartphone app—so even clients with no technical background can keep an eye on performance.

For industries like construction, automotive, and metalworking, wastewater isn't just a daily challenge—it's a moving target. Job sites change, production volumes fluctuate, and contaminants vary from project to project. That's why AlpineFlow Environmental Solutions, based in Linz, has built its business around flexibility and on-the-ground support. Unlike suppliers that only sell equipment, AlpineFlow sends teams of engineers to client sites to test wastewater, design custom solutions, and even train staff on operation and maintenance. It's a hands-on approach that's made them a favorite among contractors and manufacturers who need reliable treatment that adapts to their ever-changing needs.

Key Products: Water process equipment, oil-water separators, portable effluent treatment machine equipment, and pH adjustment systems

Take their work in the automotive industry. Car factories generate wastewater with oils, greases, heavy metals, and paint residues—contaminants that can vary drastically from one production line to the next. AlpineFlow's oil-water separators use coalescing technology to remove 99% of oil droplets, while their water process equipment includes modular filters that can be swapped out depending on the contaminant load. And when a client takes on a new project, like a construction site in Graz building a new highway tunnel, AlpineFlow brings portable effluent treatment machines that can be set up in days, treating water on-site to meet local discharge rules. "We don't just ｄｒｏｐ off a machine and leave," says field services manager Lisa Kraus. "We stay until the client is confident they can run it themselves. Last year, we helped a construction company avoid €200,000 in fines by getting their treatment system compliant in time for inspection. That's the value of on-site support."

Austria's reputation for innovation isn't just about technology—it's about collaboration. Salzburg Wastewater Innovations embodies that spirit, acting as a bridge between academia and industry to turn cutting-edge research into real-world solutions. Founded in 2015 as a joint venture between Salzburg University of Applied Sciences and a group of environmental entrepreneurs, they specialize in developing prototype equipment, pilot-scale systems, and custom testing kits for clients like research labs, startups, and multinational corporations looking to trial new treatment technologies.

Key Products: Lab-scale water process equipment, prototype effluent treatment machines, advanced sensor systems, and research consulting services

What makes them unique is their willingness to take on "unproven" ideas. For example, they're currently working with a startup in Vienna that's developing a new type of biofilm reactor for treating pharmaceutical wastewater. Salzburg Wastewater Innovations built a small-scale prototype, tested it in their lab, and helped the startup secure funding for a pilot plant. "We love working on the edge of what's possible," says research director Dr. Martin Leitner. "A lot of our clients come to us with a problem and say, 'We don't know if this can be done.' That's when we get excited." Their lab-scale water process equipment is also a hit with universities and research institutions, offering everything from miniaturized membrane systems to automated sampling devices that can run 24/7 experiments. And for companies looking to scale up, they provide "scale-up roadmaps," helping clients move from lab tests to full-scale production with minimal risk.

Nestled in the Tyrolean Alps, many communities and businesses face unique wastewater challenges: remote locations, harsh weather, and limited access to electricity or technical support. Tyrolean Water Treatment Experts, founded in 2008, was born to solve these problems. Specializing in low-maintenance, off-grid treatment systems, they've helped hundreds of mountain communities, ski resorts, and small industries keep their water clean without relying on complex infrastructure or constant professional oversight.

Key Products: Gravity-fed water process equipment, solar-powered effluent treatment machine equipment, passive filtration systems, and freeze-resistant treatment units

Their signature product? The "AlpineGravity" system, a water process equipment line that uses natural gravity instead of pumps to move wastewater through treatment stages—no electricity required. Perfect for villages perched on steep mountain slopes, where running power lines is expensive or impractical. For colder climates, they offer freeze-resistant effluent treatment machines with insulated tanks and heated pipes, ensuring year-round operation even in -20°C winters. "We designed a system for a mountain hut in the Zillertal Alps that's only accessible by ski lift," says founder Heidi Mayer. "It's been running for five years with zero maintenance—just annual check-ins by a local guide. That's the beauty of simplicity." They also excel in resource recovery: their systems often include constructed wetlands, where treated wastewater irrigates native plants, creating habitat for birds and insects while further polishing the water before it flows back into streams. It's wastewater treatment that works with nature, not against it.