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

Founded in 1998 , EcoWater Latvia has grown from a small local supplier to a cornerstone of Latvia's wastewater treatment industry. With headquarters in Riga and a manufacturing facility in Daugavpils, the company prides itself on a mission to "turn wastewater into a resource, not a waste." Over the years, they've built a reputation for reliability, particularly among industrial clients and municipal governments across the Baltic states.

At the core of EcoWater's offerings is their effluent treatment machine equipment , designed to handle everything from domestic sewage to heavy industrial effluent. Their flagship product, the ECO-1500 series, is a modular system that can be scaled to treat 500 to 15,000 cubic meters of wastewater per day—a flexibility that has made it a favorite among growing cities like Jelgava and Liepāja. But what truly sets EcoWater apart is their integrated approach: they don't just supply equipment; they provide full turnkey solutions, including water process equipment for pre-treatment (like screening and grit removal) and air pollution control system equipment to manage odors and emissions from treatment plants.

One of their most notable projects was partnering with the city of Ventspils in 2020 to upgrade its wastewater treatment plant, which now serves over 40,000 residents and meets the strictest EU discharge standards. "We worked closely with the city's engineers to understand their needs—they wanted to reduce energy use while increasing capacity," recalls Andris Bērziņš, EcoWater's technical director. "By integrating our energy-efficient blowers and smart monitoring systems, we cut their operational costs by 22%."

Certified to ISO 9001 and ISO 14001, EcoWater also places a strong emphasis on sustainability. Their R&D team is currently testing a new biological treatment process that uses natural bacteria to break down pollutants, reducing the need for chemical additives. "Our clients aren't just buying equipment; they're buying peace of mind," says Bērziņš. "In Latvia, where the Baltic Sea is part of our identity, protecting it isn't optional—it's a responsibility we take personally."

Established in 2005 in Liepāja, Baltic Treatment Systems (BTS) has carved a niche as a go-to supplier for small to medium-sized wastewater treatment plants, particularly in rural areas and industrial parks. What started as a family-owned business has grown into a team of 40+ engineers, technicians, and environmental specialists, all united by a simple goal: "Making wastewater treatment accessible and affordable for every Latvian community," says founder Māris Ozoliņš.

BTS's product lineup is focused on practicality and scalability. Their water process equipment includes compact, prefabricated treatment units that can be installed in weeks rather than months—critical for small municipalities with tight budgets and timelines. One of their bestsellers is the MiniTreat series, a modular system that combines primary sedimentation, activated sludge treatment, and disinfection in a single unit. "We designed it for towns with populations under 5,000," explains Ozoliņš. "It's plug-and-play, but we still customize it to local conditions—whether the water is high in organic matter or has industrial contaminants."

Beyond standard treatment, BTS also offers specialized equipment like compact granulator with dry separator equipment , which helps recover valuable materials from wastewater (such as plastics or metals) before treatment, turning waste into a resource. For food processing facilities in rural Latvia—like the dairy farms in Vidzeme—this has been a game-changer. "A client in Cēsis was struggling with high fat content in their wastewater, which was clogging their system," says Ozoliņš. "We installed our granulator to separate the fat, which they now sell as animal feed. It turned a problem into a revenue stream."

In 2022, BTS expanded into effluent treatment solutions for small industrial facilities, launching a line of effluent treatment machine equipment tailored to garages, auto repair shops, and small factories. These systems use chemical coagulation and filtration to remove oil, grease, and heavy metals, ensuring compliance with Latvia's Environmental Protection Law. "Many small businesses don't have the budget for large treatment plants, so we created something affordable but effective," notes Ozoliņš. "A garage in Riga was facing fines for improper oil disposal; now, with our system, they treat their wastewater on-site and reuse it for cleaning, saving money on water bills."

What truly endears BTS to its clients is its hands-on approach. "We don't just deliver the equipment and leave," says Ozoliņš. "Our technicians provide training, regular maintenance, and even 24/7 support. In a small town, if the treatment plant breaks down, there's no backup—so we make sure our clients feel supported every step of the way." With a 98% customer retention rate, it's clear this philosophy is working.

Founded in 2010 as a spin-off from Riga Technical University, Riga Environmental Tech (RET) brings academic rigor to the world of wastewater treatment. With a team of PhD-level engineers and researchers, the company specializes in solving complex environmental challenges, particularly for industrial clients with unique wastewater compositions. "We thrive on projects others might consider 'too hard,'" says Dr. Liga Kļaviņa, RET's chief scientist. "Our roots in academia mean we're always exploring new technologies, but we never lose sight of real-world applicability."

RET's core expertise lies in integrated environmental solutions, which often combine wastewater treatment with air and soil remediation. Their product range includes advanced water process equipment for industrial applications—like membrane bioreactors (MBRs) that use ultrafiltration to remove even the smallest contaminants—and air pollution control system equipment such as biofilters and activated carbon scrubbers. "Many industrial plants generate both wastewater and air emissions," explains Kļaviņa. "By addressing both in one solution, we save clients time, money, and space."

A standout example of their work is their partnership with a large chemical plant in Daugavpils in 2021. The plant was struggling with wastewater containing high levels of ammonia and volatile organic compounds (VOCs), which were causing odor complaints from nearby communities. RET designed a custom system that combined water process equipment (a two-stage biological reactor to break down ammonia) with an air pollution control system (a biofilter using specialized bacteria to neutralize VOCs). "The result? Odor levels dropped by 95%, and the plant now exceeds EU emission standards," says Kļaviņa. "The community even sent us a thank-you letter—you don't get that every day."

RET also excels in sludge management, offering innovative sludge dewatering systems that reduce sludge volume by up to 70%, making disposal or reuse (as fertilizer) more cost-effective. For the Riga Central Wastewater Treatment Plant, they installed a centrifugal dewatering system in 2019 that processes 20 tons of sludge daily. "Sludge is often the forgotten part of wastewater treatment, but it's a major operational cost," notes Kļaviņa. "Our systems help plants turn a liability into a resource."

As a university spin-off, RET maintains strong ties to academia, collaborating on EU-funded research projects to develop next-generation treatment technologies. Currently, they're working on a pilot project using nanotechnology to remove microplastics from wastewater—an emerging concern in the Baltic Sea. "We believe in staying ahead of the curve," says Kļaviņa. "Regulations will only get stricter, and we want our clients to be prepared." For businesses in Latvia looking for cutting-edge, science-backed solutions, RET is a name that inspires confidence.

With over 30 years of experience , Latvian Water Solutions (LWS) is one of the oldest wastewater treatment suppliers in the country, tracing its roots back to the early 1990s when Latvia first began transitioning to market-based environmental solutions. Today, with offices in Riga, Liepāja, and Daugavpils, LWS focuses on municipal wastewater treatment, helping towns and cities across Latvia upgrade aging infrastructure to meet modern standards.

"Many of Latvia's wastewater plants were built in the Soviet era, and they're simply not equipped to handle today's demands," says Inese Jansone, LWS's sales director. "Our specialty is retrofitting these plants—modernizing equipment, improving efficiency, and ensuring compliance—without completely rebuilding them. It's a cost-effective approach that respects the budget constraints of small municipalities."

LWS's product portfolio includes a range of effluent treatment machine equipment , from classic activated sludge systems to more advanced moving bed biofilm reactors (MBBRs). Their MBBR units, in particular, have become popular for retrofits because they can be added to existing tanks, increasing treatment capacity without requiring new construction. "In Valmiera, we added MBBR modules to their 1980s-era plant, boosting capacity by 40% at a fraction of the cost of building new," Jansone explains. "The plant now serves 25,000 people and meets EU standards for phosphorus and nitrogen removal."

The company also specializes in wet process equipment for treating wastewater with high suspended solids, such as that from pulp and paper mills or food processing facilities. Their belt filter presses and clarifiers are designed to handle thick, sludge-like effluents, separating solids from liquids efficiently. For a potato processing plant in Bauska, LWS installed a custom wet process system that removes starch and solids before the wastewater enters the municipal sewer system. "The plant was paying high surcharges for excessive solids," says Jansone. "Our system reduced their sewer fees by 60%—it paid for itself in under two years."

What truly sets LWS apart is its deep understanding of Latvia's unique geography. "We know the local soil types, the climate, the way water flows in our rivers and lakes," Jansone notes. "This isn't just about treating wastewater—it's about designing systems that work in Latvia's specific conditions. For example, in coastal areas like Jūrmala, we have to account for saltwater intrusion in groundwater, which affects how we design our treatment processes."

As Latvia continues to invest in infrastructure upgrades under the EU's Cohesion Fund, LWS has positioned itself as a trusted partner for municipalities. "We're not just a supplier; we're a collaborator," says Jansone. "We work with local governments to secure funding, navigate regulations, and ensure projects are delivered on time and on budget. At the end of the day, our goal is simple: to make sure every Latvian has access to clean water and a healthy environment."

Founded in 2012 by a team of engineers passionate about sustainable technology, GreenFlow Engineering has quickly become a leader in eco-friendly wastewater treatment solutions, with a focus on the food and beverage industry. "The food sector is vital to Latvia's economy, but it's also one of the biggest water users and polluters," says founder and CEO Kristīne Ozoliņa. "We saw an opportunity to help these businesses reduce their environmental footprint while improving their bottom line."

GreenFlow's product range is built around the principle of "closing the loop"—designing systems that treat wastewater and reuse it, or recover valuable resources like energy or nutrients. Their dry process equipment is particularly innovative: instead of using large amounts of water to treat effluent, these systems use mechanical processes (like centrifugation and drying) to separate solids, making them ideal for water-scarce regions or facilities looking to conserve water. "For a brewery in Riga, we installed a dry process system that treats their wastewater and turns the leftover yeast and grain solids into animal feed," Ozoliņa explains. "They now save 1.2 million liters of water annually and generate extra revenue from selling the feed."

At the heart of their offerings is water process equipment designed for biological treatment, such as their EcoBrew series for breweries and EcoDairy for dairy farms. These systems use naturally occurring bacteria to break down sugars, fats, and proteins in wastewater, producing biogas as a byproduct. "Biogas can be used to power the plant or sold to the grid," Ozoliņa notes. "A dairy farm in Tukums installed our EcoDairy system and now generates 30% of its electricity needs from biogas. It's a win-win for the environment and their budget."

Recognizing that wastewater treatment plants themselves can be sources of pollution, GreenFlow also integrates air pollution control system equipment into their solutions. Their biofilters and thermal oxidizers manage odors from treatment processes, a critical consideration for food facilities located near residential areas. "A winery in Gauja National Park was facing complaints about fermentation odors," says Ozoliņa. "We installed a biofilter that uses soil bacteria to neutralize the odors—now, you can't even smell the plant from the nearby hiking trails."

GreenFlow's commitment to sustainability extends beyond its products. The company's Riga headquarters is powered by solar panels, and all its equipment is designed for easy maintenance and recycling at the end of its lifecycle. "We practice what we preach," Ozoliņa says. "Our clients choose us because they want to be part of the solution, not just comply with regulations. In Latvia, where we value our natural beauty, that mindset is becoming more and more common." With a growing list of clients across the Baltic states, GreenFlow is proving that sustainability and profitability can go hand in hand.

Established in 2008 in Daugavpils, CleanStream Industries has made a name for itself as the go-to supplier for heavy industry—chemical plants, metalworking facilities, and manufacturing sites that generate some of the most challenging wastewater streams in Latvia. "These industries deal with acids, heavy metals, oils, and toxic chemicals—wastewater that can't be treated with standard biological processes," says CEO Jānis Krūmiņš. "Our mission is to provide robust, reliable solutions that handle these tough conditions."

At the core of CleanStream's offerings is its effluent treatment machine equipment for chemical precipitation, a process that uses chemicals to bind with heavy metals and other contaminants, forming solids that can be easily removed. Their ChemTreat series is designed for high-flow industrial plants, with capacities ranging from 50 to 5,000 cubic meters per day. "A metal plating facility in Liepāja was struggling to remove chromium and nickel from its wastewater," Krūmiņš recalls. "Our ChemTreat system uses lime and ferric chloride to precipitate these metals, reducing their levels to below EU limits. The solids are then safely disposed of, and the treated water is reused in their plating baths."

For industries dealing with oily or greasy wastewater—such as automotive manufacturing or machine shops—CleanStream offers hydraulic press machines equipment for oil-water separation. These presses use high pressure to squeeze water out of oil-laden sludge, recovering usable oil and reducing waste volume. "A car factory in Riga was sending 10 tons of oily sludge to landfill monthly," Krūmiņš explains. "Our hydraulic press recovers 80% of the oil, which they reuse in their machinery, and reduces sludge volume by 70%. It's saved them over €50,000 a year in disposal costs."

CleanStream also provides comprehensive water process equipment for pre-treatment, including screening, grinding, and equalization tanks, ensuring that wastewater is properly prepared for treatment. "Industrial wastewater is often variable—flow rates and contaminant levels can fluctuate hourly," Krūmiņš notes. "Our equalization tanks smooth out these variations, making the treatment process more efficient and reliable."

What clients value most about CleanStream is its durability. "Industrial environments are harsh—corrosive chemicals, high temperatures, constant operation," Krūmiņš says. "Our equipment is built to last, with stainless steel components and heavy-duty pumps. We stand behind our products with a 5-year warranty, which gives our clients peace of mind."

Looking to the future, CleanStream is investing in automation and digitalization, developing smart sensors and AI-driven monitoring systems that can predict equipment failures and optimize treatment processes in real time. "The industrial sector is moving toward Industry 4.0, and wastewater treatment shouldn't be left behind," Krūmiņš says. "Our goal is to make treatment plants not just effective, but intelligent." For Latvia's heavy industries, CleanStream is more than a supplier—it's a partner in navigating the complex world of industrial wastewater management.

Founded in 2014 by a team of pharmaceutical engineers, AquaTech Latvia has carved a unique niche in the wastewater treatment market: serving the healthcare, pharmaceutical, and biotechnology sectors. These industries have some of the strictest wastewater standards in the world, requiring the removal of pharmaceuticals, pathogens, and trace organic compounds. "In pharma, even a tiny amount of residual drug in wastewater can harm aquatic life," says CEO Elīna Jansone. "Our systems are designed to meet these ultra-high purity standards."

AquaTech's flagship product is its PharmaClear series, a multi-stage water process equipment system that combines physical, chemical, and advanced oxidation processes (AOP) to treat pharmaceutical wastewater. "AOP uses UV light and hydrogen peroxide to break down even the most persistent organic compounds, like antibiotics and hormones," Jansone explains. "For a generic drug manufacturer in Riga, we installed a PharmaClear system that reduces pharmaceutical residues to below detection limits—less than 0.1 micrograms per liter. It's the gold standard for pharma wastewater treatment."

The company also specializes in wet process equipment for biotech facilities, where wastewater may contain high concentrations of proteins, cell cultures, and biological materials. Their BioSep series uses membrane filtration and centrifugation to separate these materials, ensuring that treated water is safe for discharge or reuse. "A biotech startup in Daugavpils needed to treat wastewater from their cell culture experiments," Jansone recalls. "Our BioSep system recovers valuable cell debris for research while producing water clean enough to use in their lab equipment. It's a great example of how wastewater treatment can support innovation."

Recognizing that pharmaceutical and healthcare facilities are also concerned with air quality, AquaTech integrates air pollution control system equipment into its solutions. Their HEPA filters and activated carbon scrubbers remove airborne pathogens and volatile organic compounds (VOCs) from treatment plant exhaust, protecting workers and nearby communities. "A hospital in Liepāja was concerned about COVID-19 transmission from its wastewater treatment area," says Jansone. "We installed a UV air purifier and HEPA filtration system, giving staff and patients peace of mind."

AquaTech's success lies in its deep understanding of regulatory requirements. "Pharma and healthcare clients face inspections from the State Agency of Medicines and the EU's EMA," Jansone notes. "We ensure our systems are fully documented, with validation protocols and compliance reports ready for audits. It's not just about treating water—it's about providing the paperwork to prove it."

With clients across the Baltic states and Scandinavia, AquaTech is expanding its reach while staying true to its roots. "We started as a small team with a passion for clean water and healthcare," Jansone says. "Today, we're helping save lives—both human and aquatic—by ensuring pharmaceutical wastewater is treated to the highest standards. That's a mission we're proud to carry forward."

Since 2011 , EcoPro Systems has focused on solving one of the textile industry's biggest challenges: wastewater pollution. Textile dyeing and finishing processes use vast amounts of water and toxic chemicals, including heavy metals, azo dyes, and formaldehyde, which can leach into rivers and lakes if not properly treated. "Latvia's textile industry is a source of pride—think of brands like Latvian linen—but it's also a source of environmental concern," says founder and technical director Mārtiņš Bērziņš. "EcoPro was born to help this industry thrive without harming our waterways."

EcoPro's core offerings include effluent treatment machine equipment tailored to textile wastewater, such as their DyeClear series, which uses advanced oxidation and adsorption to remove color and chemicals. "Traditional treatment methods struggle with textile dyes—they're designed to be colorfast, so they don't break down easily," Bērziņš explains. "Our DyeClear system uses ozone and activated carbon to target these dyes, removing over 99% of color from wastewater. A linen factory in Valmiera was facing fines for colored discharge; now, their treated water is crystal clear."

The company also specializes in dry process equipment for water conservation, a critical need in the textile industry, which can use up to 200 liters of water per kilogram of fabric. EcoPro's DryDye technology uses supercritical CO2 instead of water to apply dyes, reducing water use by 95%. "It's a game-changer for sustainability," says Bērziņš. "A fashion brand in Riga switched to DryDye and now promotes its 'waterless' collection,. It's not just good for the environment—it's good for business."

Complementing these solutions is EcoPro's water process equipment for biological treatment, which handles the organic load in textile wastewater (from starches, detergents, and sizing agents). Their BioText series uses aerobic and anaerobic bacteria to break down these organics, producing biogas that can be used to power the facility. "A knitwear factory in Jelgava installed our BioText system and now generates 15% of its electricity from biogas," Bērziņš notes. "It's a circular solution that turns waste into energy."

What makes EcoPro stand out is its collaborative approach. "We work with textile mills from the design phase, understanding their production processes to tailor solutions that fit their workflow," Bērziņš says. "A denim factory in Liepāja was worried that treatment would slow down production; we designed a system that integrates with their dyeing machines, adding just 2 minutes per batch. They didn't lose productivity, and now they meet all environmental standards."

With Latvia's textile industry increasingly focused on sustainability, EcoPro is poised for growth. "Consumers are demanding greener products, and brands are responding," Bērziņš says. "We're here to help them deliver—proving that fashion and environmental responsibility can go hand in hand."

Founded in 2016 by a team of former oil and gas engineers, WaterGuard Technologies brings a unique perspective to wastewater treatment: tackling the complex challenges of the energy sector. "Oil and gas production generates some of the most difficult-to-treat wastewater, with high levels of salt, hydrocarbons, and heavy metals," says CEO Kaspars Ozoliņš. "We saw a gap in the market for suppliers who truly understand these challenges—and we filled it."

WaterGuard's flagship product is its PetroClear series, a suite of water process equipment designed for upstream and downstream oil and gas operations. The system combines membrane filtration, chemical oxidation, and ion exchange to remove contaminants, producing water that meets both discharge standards and, in some cases, reinjection requirements. "A gas processing plant in eastern Latvia was struggling with high salt levels in its produced water," Ozoliņš explains. "Our PetroClear system uses reverse osmosis to desalinate the water, which is then reinjected into the reservoir to maintain pressure. It's more cost-effective than disposing of it off-site."

For offshore oil platforms and coastal facilities, WaterGuard offers compact granulator with dry separator equipment , which reduces the volume of oily sludge for easier transport and disposal. "Space is limited on offshore platforms, so our granulators are designed to be compact and lightweight," Ozoliņš notes. "A platform in the Baltic Sea installed our system and reduced sludge transport costs by 40%—a significant saving in an industry with tight margins."

Recognizing the oil and gas industry's need to manage air emissions, WaterGuard also provides air pollution control system equipment , including thermal oxidizers and catalytic converters, to treat volatile organic compounds (VOCs) and hydrogen sulfide (H2S) from wastewater treatment processes. "H2S is not only toxic but corrosive to equipment," says Ozoliņš. "Our catalytic oxidizers convert it to harmless sulfur dioxide, protecting workers and extending the life of the plant."

WaterGuard's expertise in remote monitoring is another key advantage. "Many oil and gas facilities are in remote locations, making on-site monitoring difficult," Ozoliņš explains. "Our systems include IoT sensors that send real-time data to a cloud dashboard, allowing operators to monitor performance, detect issues, and adjust settings from anywhere. A pipeline company in Latvia uses our remote monitoring to manage 12 wastewater treatment sites from their Riga office—it's transformed their operations."

With the global push toward cleaner energy, WaterGuard is also expanding into renewable sectors, such as biodiesel production and geothermal energy. "The skills we've developed in oil and gas—treating complex, high-contaminant wastewater—are directly applicable to renewables," Ozoliņš says. "A biodiesel plant in Daugavpils is using our PetroClear system to treat glycerol-rich wastewater, proving that sustainability and efficiency can coexist." For Latvia's energy sector, WaterGuard is more than a supplier—it's a partner in navigating the transition to a cleaner future.

Established in 2013 in Ventspils, Baltic Eco Equipment (BEE) has made a name for itself by focusing on small-scale, cost-effective wastewater treatment solutions for rural communities, small businesses, and remote facilities like campsites and holiday resorts. "Not every client needs a large, complex treatment plant," says founder and managing director Jānis Krūmiņš. "Many just need something simple, reliable, and affordable that works with their budget and space constraints."

BEE's core product is its EcoMini series, a range of effluent treatment machine equipment designed for capacities from 1 to 50 cubic meters per day. These compact, prefabricated systems combine primary treatment (sedimentation), secondary treatment (biological filtration), and disinfection (UV or chlorine) in a single unit, making them ideal for small communities or businesses. "A holiday resort on the coast of Kurzeme was facing closure because it couldn't meet new wastewater standards," Krūmiņš recalls. "We installed an EcoMini 20 system, which fits in a space smaller than a shipping container. Now, they can treat their wastewater on-site and discharge it safely into the Baltic Sea. They're busier than ever, with guests praising their commitment to sustainability."

For clients with limited access to water or looking to conserve resources, BEE offers wet process equipment that uses minimal water, such as their BioSand filters and constructed wetlands. These natural systems use sand, gravel, and plants to treat wastewater, requiring little energy or maintenance. "A rural school in Latgale was struggling with high water bills," says Krūmiņš. "We installed a constructed wetland with reeds and rushes—now, they treat their wastewater for free, and the wetland has become an outdoor classroom for biology lessons. It's educational and eco-friendly."

BEE also provides a range of auxiliary equipment to support wastewater treatment, including pumps, filters, and chemical dosing systems, ensuring clients have everything they need for a complete solution. "Many small clients don't have technical staff, so we make our equipment as user-friendly as possible," Krūmiņš notes. "Our dosing systems have simple controls and alarms, and we provide training so even someone with no prior experience can operate them."

What truly makes BEE a favorite among small-scale clients is its affordability and after-sales support. "We understand that small communities and businesses have limited budgets," Krūmiņš says. "Our EcoMini systems start at under €10,000, and we offer flexible payment plans. Plus, our technicians are on call 24/7—if a system breaks down in the middle of the night, we're there to fix it."

With a network of dealers across Latvia and Estonia, BEE is committed to making wastewater treatment accessible to everyone. "Clean water shouldn't be a luxury reserved for big cities," Krūmiņš says. "Whether you're a small hotel in Sigulda or a village in Zemgale, we have a solution that fits your needs and your budget. That's our promise."