Water treatment solution providers, shortlisted.

Elemental Water Makers B.V., founded in 2012 in Delft, Netherlands by TU Delft engineers Sid Vollebregt and Reinoud Feenstra, builds solar-driven reverse osmosis desalination systems. Its battery-free technology uses energy recovery to cut electricity demand by roughly 70 percent, enabling off-grid seawater and brackish water desalination. The company has supplied clean water to over 100,000 people in remote coastal and island communities.

Oil Skimmers, Inc., headquartered in Cleveland, Ohio and operating for over 50 years, manufactures oil removal equipment that separates oil, fat and grease from process water, wash water, coolant and wastewater. Its Brill tube-type skimmers, floating weir skimmers and oil water separators with Active Oil Removal recover up to 99 percent of free-floating oils across food processing, metal machining, petrochemical and marine sectors. Product lines include CoolSkim, Skim 1st Tank, OilyBelt and the ORTS oil removal and transfer system.

Envirogen Technologies, headquartered in Kingwood, Texas, is an international provider of environmental technology and process water solutions with more than 30 years of experience. It specializes in outsourced operations and maintenance services, offering full-time staffing, routine service contracts, and emergency response for water treatment plants. Envirogen serves mining, petrochemical, food and beverage, and municipal sectors using ion exchange, hollow fiber membranes, and mobile deionization fleets.

C&G Depurazione Industriale Srl, founded in 1971 in Rignano sull'Arno near Florence, Italy, designs and manufactures industrial wastewater treatment systems. Originally built for the galvanic and metal-plating industry, it now serves printing, cosmetic, pharmaceutical, biotechnology, and food sectors, with over 2,000 plants sold in Italy and abroad. C&G specializes in vacuum evaporators, ion exchange demineralizers, reverse osmosis, and Zero Liquid Discharge systems, backed by global technician support.

Genesis Water Technologies, headquartered in Maitland, Florida, designs modular water and wastewater treatment systems plus specialty media and flocculants for industrial clients. The firm addresses silica removal, cooling tower cycles of concentration, scale and corrosion control, and water recycling for data centers and manufacturers. Named offerings include the Zeoturb bio-organic flocculant, GCAT catalytic membrane protection, and Genclean cooling tower tablets, backed by engineering process optimization consulting.

Optimarin AS, founded in 1994 in Stavanger, Norway, was among the first companies to develop ballast water treatment for ships. Its systems combine self-cleaning back-flushing filters with UV irradiation to neutralize invasive marine organisms, viruses, and bacteria without chemicals or harmful by-products. In 2016 it became the first vendor approved under the stricter US Coast Guard standard, serving global marine and offshore fleets.

Arvia Technology, based in Runcorn, Cheshire, UK, builds advanced tertiary wastewater systems that combine adsorption with electrochemical oxidation to remove persistent organics from industrial effluent. Its patented Nyex media platform (Rosalox, Ellenox, Florenox) targets color removal, micropollutants, COD reduction, pesticides and active pharmaceutical ingredients, enabling industrial water reuse and zero liquid discharge across pharma, textiles, agrochemical and semiconductor sectors. Services include treatability trials and plant hire.

MECO Incorporated, headquartered in Louisiana with operations in California, Singapore, and Ireland, has built water purification equipment for over 90 years and is now a Grundfos company. It is a leading supplier of pharmaceutical and biopharmaceutical water systems, engineering Water for Injection (WFI) and Purified Water generation and distribution skids. MECO designs vapor compression distillation, reverse osmosis, and pure steam systems plus smartANALYTICS monitoring for life-science plants worldwide.

Sodai is a Milan, Italy environmental engineering company with more than 30 years of experience in purifying and treating primary waters and industrial process fluids. It designs and operates tailor-made and standard plants for desalination, potabilization, purification, oily water treatment, water reuse and zero liquid discharge, serving Oil, Gas and Power clients including operating centers for ENI and ENEL. The company works across 28 countries and holds ISO 9001, ISO 14001 and ISO 45001 certification.

Ostara, founded in 2005 and headquartered in Vancouver, Canada, recovers nutrients from municipal and industrial wastewater and converts them into commercial fertilizer. Its proprietary Pearl fluidized-bed reactor crystallizes phosphorus and nitrogen into struvite-based Crystal Green slow-release fertilizer, helping water resource recovery facilities meet discharge limits, prevent struvite scaling, and generate revenue from recovered nutrients across North America and Europe.

GEH Wasserchemie, founded in 1997 near Osnabrueck, Germany, manufactures patented granular ferric hydroxide adsorption media (GEH and GEH 102) for removing arsenic, lead, chromium, copper, manganese, nickel, zinc and phosphate from drinking water and process water. The media complies with EN DIN 15029, products treat roughly 180 million cubic meters of water per year, and the company operates in 61 countries with ISO 9001, 14001 and 50001 certification.

Clean TeQ Water, headquartered in Mount Waverley, Victoria, Australia, develops and delivers advanced water treatment and resource recovery technologies. Its portfolio includes CIF continuous ionic filtration, CLEAN-IX metal recovery, DESALX membrane-free desalination, EVAPX low-energy evaporation, and PHOSPHIX phosphorus recovery, applied to zero and minimum liquid discharge, brackish desalination, and metals recovery via EPC and build-own-operate models.

Ecofario, founded in 2013 and headquartered in Munich, Germany, develops filterless microplastic removal technology for municipal and industrial wastewater treatment plants. Its High-G-Separator uses a high-gravity hydrocyclone principle to remove up to 99.9 percent of microplastics, including adhering pollutants, without filter media, and also serves contaminant rejection, oil extraction and fiber-loss reduction. The company partnered with Valmet for automation and was named one of Germany's most sustainable startups in the Resources category.

Condorchem Enviro Solutions is a Catalan environmental engineering firm in Spain providing turnkey industrial wastewater and air emission treatment. Its portfolio spans ENVIDEST vacuum evaporators, DESALT crystallizers, reverse osmosis, ion exchange and activated carbon for zero liquid discharge, oily water treatment, textile and dye color removal, brine management and water reuse. The company holds ISO 9001, ISO 14001 and EcoVadis Gold, covering pollutant analysis, plant design, installation, start-up and after-sales maintenance.

UCC Environmental, headquartered in Waukegan, Illinois, USA, provides industrial water treatment, air pollution control, and solids handling solutions. Its ultrapure water offering serves microelectronics and semiconductor manufacturing across makeup, primary, and polishing stages, combining reverse osmosis, electrodeionization, UV TOC reduction, activated carbon filtration, and membrane degasification to meet the most stringent UPW quality requirements for chip fabrication.

PuriTech, founded in 1996 in Belgium, is a liquid separation specialist built around its patented ION-IX continuous counter-current ion exchange system, which uses a multiport distribution valve to cut operating cost, capital and footprint versus conventional plants. Applications include nitrate removal and arsenic removal from drinking water, softening and demineralization, plus metal recovery and direct lithium extraction. The company offers process engineering, 3D design, pilot testing and mobile treatment units.

Boreal Light GmbH, based in Berlin, Germany, designs and manufactures affordable solar-powered water desalination systems for off-grid communities worldwide. Its Winture solar desalination platform produces drinking water, irrigation water, and industrial process water from saline, brackish, and polluted sources without grid electricity, delivered as containerized plug-and-play units serving agriculture, mining, and rural water supply.

VA Tech Wabag Limited, headquartered in Chennai, India, is a global water technology multinational with over a century of heritage, operating across 25 countries on three continents. It provides EPC and O&M of drinking water, desalination, industrial water, and wastewater treatment plants for municipalities and sectors including oil and gas, power, and steel. Wabag deploys seawater reverse osmosis, aerobic granular biomass, forward osmosis, and Zero Liquid Discharge across large-scale water infrastructure projects.

RS Hydro, founded in 1997 and based in Redditch, England, supplies water quality monitoring and measurement solutions for environmental, process, and industrial applications. It provides online water quality monitors, ultrasonic and clamp-on flow meters, level sensors, groundwater sampling equipment, and telemetry. RS Hydro builds cloud-connected, IoT-enabled sensor networks and remote sampling systems including drone-mounted probes for continuous monitoring of rivers, discharge points, and process streams.

LiqTech International, headquartered in Ballerup, Denmark and listed on Nasdaq, develops advanced membrane filtration technology for purifying liquids and gases. It specializes in oil and gas produced water treatment, marine scrubber water cleaning, and industrial wastewater using proprietary silicon carbide ceramic membranes in crossflow systems. LiqTech has installed more than 280 water treatment systems globally, including produced water pilot units delivered to operators in the Middle East.