Top 50 Desalination Technology - Series A

OceanWell develops modular subsea reverse osmosis systems that utilize natural ocean pressure to produce fresh water efficiently, reducing energy consumption by 40% compared to traditional desalination methods. The technology addresses global water scarcity while preserving marine ecosystems and avoiding the environmental impacts associated with coastal desalination plants.

Brilliant Planet builds utility‑scale desalination plants that use concentrated solar power to generate high‑pressure steam for reverse osmosis, eliminating the need for grid electricity. The modular design with molten‑salt thermal storage enables continuous, low‑energy water production (<3 kWh/m³) for agriculture, industry, and municipalities in arid regions, monitored via a cloud‑based SCADA platform.

This startup develops a modular desalination system that utilizes subsea Seawater Reverse Osmosis (SWRO) technology to produce affordable freshwater from deep-sea sources. By providing tailored deep-sea drinking water solutions, the company addresses the critical need for reliable freshwater access for individuals, farmers, and industries.

Aquafortus offers the ABX™ non‑thermal desalination system, which uses a patented solvent‑exchange process followed by low‑pressure membrane filtration to extract clean water from high‑salinity brine. Operating at ambient temperature, the platform reduces energy use by about 60 % and operating costs by roughly 50 % compared with conventional thermal desalination, while its modular skid‑mounted design enables scalable integration for oil‑&‑gas, mining, power generation, and semiconductor facilities.

Capture6 provides a modular system that integrates desalination with atmospheric CO₂ capture, turning brine waste into fresh water while permanently storing carbon. The closed-loop unit can be retrofitted to existing water or industrial facilities, eliminating brine disposal costs and creating revenue from water sales and carbon credits.

MediSun Energy utilizes Reverse Electrodialysis (RED) technology to convert saltwater into electricity, addressing the global water crisis and high energy consumption associated with traditional desalination methods. This process significantly reduces energy use by 30% and eliminates brine production, offering a sustainable solution for clean energy generation.

Capture6 provides a modular system that extracts freshwater from saline or waste streams while simultaneously capturing and storing CO₂, turning brine disposal costs into revenue-generating byproducts such as green chemicals. The technology is deployed in partnership with industrial operators, governments, and communities to improve water security and reduce carbon footprints, delivering operational cost savings and multiple revenue streams from the produced freshwater and chemical outputs. Revenue is generated through sales of the freshwater, carbon credits, and the sale or licensing of the green chemical byproducts.

Ebb develops electrochemical water technology that processes desalination brine to produce additional freshwater and valuable industrial products. This process also facilitates permanent atmospheric carbon dioxide removal by returning alkaline seawater to the ocean. The modular systems integrate with existing desalination infrastructure to enhance water security and support decarbonization efforts.

Evove utilizes nanotechnology and additive manufacturing to create precision membrane technology that enhances water filtration efficiency by eliminating random pore sizes and reducing fouling. This technology addresses the challenges of high energy consumption and space requirements in conventional membrane systems, enabling more sustainable water recycling and resource recovery.

The startup operates a solar salt project focused on producing chemical-grade salt for the Asia-Pacific chemical markets. By utilizing solar evaporation techniques, the company provides clients with competitively priced salt, addressing the demand for cost-effective raw materials in chemical manufacturing.

Gradiant provides integrated water‑treatment platforms for large industrial facilities, combining membrane, adsorption, oxidation and extraction technologies to reduce freshwater intake and recover metals, minerals and other resources. The systems include an AI‑driven SmartOps analytics layer and proprietary CURE chemicals that continuously optimize process setpoints, predict maintenance and ensure compliance for applications such as zero‑liquid‑discharge, PFAS destruction, lithium extraction and electrolyzer‑ready water.

Pani Energy develops a data-driven analytics platform that consolidates sensor data for real-time monitoring and predictive optimization of water treatment plants. This technology enhances operational efficiency, reduces downtime, and extends the lifespan of treatment membranes by providing actionable insights and alerts based on real-time performance metrics.

AMEA Power develops and operates renewable energy projects, focusing on solar and wind technologies to generate sustainable electricity. The company provides reliable power solutions to meet the growing demand for clean energy while reducing reliance on fossil fuels.

The startup develops membrane-based systems for extracting valuable minerals and producing clean water from sub-surface brines, industrial wastewater, and end-of-life batteries. Their technology reduces the environmental impact of mineral extraction while enhancing the efficiency and cost-effectiveness of water treatment processes.

Genesis Systems engineers scalable Atmospheric Water Generators (AWG) to produce potable water directly from ambient air. Their WaterCube product line offers solutions ranging from personal use to commercial and industrial scale demand. The company provides sustainable, off-grid water sourcing that meets or exceeds NSF/EPA drinking standards.

Vital Lyfe develops personal water purification technology designed to provide water autonomy in off-grid and remote environments. The company creates scalable water tech capable of accessing and treating abundant water sources like the ocean. This technology is intended for use in defense, disaster relief, and personal exploration scenarios.

Aquafortus utilizes a non-thermal recovery and crystallization technology platform to efficiently extract valuable resources from wastewater. This process reduces environmental impact and enhances resource recovery, addressing the challenges of waste management in various industries.

Boon develops AI-powered water purification and monitoring systems that provide sustainable access to clean drinking water while reducing reliance on single-use plastic bottles. Their technology addresses the critical issue of water scarcity and pollution, particularly in underserved regions, by implementing solar-powered solutions and circular hydration systems.

Wayout develops modular microfactories that utilize advanced filtration and mineralization technologies to produce locally sourced, plastic-free drinking water. This approach addresses the global challenge of water scarcity and contamination by providing sustainable, cost-effective solutions for communities in need of reliable access to clean water.

The startup develops ceramic flat membrane filtration technology for wastewater treatment, providing reliable alternatives for water and sewage management. Their solutions enhance operational efficiency and ensure compliance with environmental standards in industrial applications.

The startup manufactures subscription-based water purifying systems that utilize IoT technology and a triple-layer filtration process, including reverse osmosis (RO), ultraviolet (UV), and ultrafiltration (UF). This solution provides families with affordable and convenient access to clean drinking water while continuously monitoring the health of the purifier.

Drupps develops systems for recovering airborne wastewater from industrial airstreams, enabling businesses to recycle pure water and heat with high efficiency. This technology addresses water scarcity by reducing overall water consumption and improving environmental conditions through cleaner exhaust air.

This startup manufactures a solar water disinfection (SODIS) purification bag that utilizes a multi-layered plastic composition to effectively reduce bacteria in water. Each bag can purify up to 6 liters of water, providing safe and affordable drinking water to communities in need.

Hydropleap utilizes electrocoagulation technology to remove suspended solids, metals, and oils from water without the use of chemicals. This process enhances water treatment efficiency while reducing the environmental impact associated with traditional chemical methods.

Osmoses focuses on addressing major planetary challenges by working with the smallest molecules. The company develops technology centered around molecular interactions to solve significant environmental problems. They invite partners to pilot and implement their solutions.

SepPure Technologies develops solvent-resistant nanofiltration membranes that separate chemical mixtures at the molecular level, significantly reducing energy consumption in industrial processes. Their technology addresses the high energy intensity and pollution associated with traditional chemical separation methods, with potential annual savings of one million tonnes of volatile organic compounds and one billion tonnes of carbon dioxide.

The startup has developed a purification and disinfection device that generates hydrogen peroxide using only water, air, and electricity, producing an eco-friendly biocide. This technology enhances food and water safety while minimizing the environmental impact and risks associated with transporting and handling toxic disinfectants.

Captura utilizes renewable energy to perform Direct Ocean Capture, extracting CO2 from seawater to enhance the ocean's natural carbon removal processes without additives or by-products. This technology addresses the urgent need for scalable carbon removal solutions to mitigate climate change impacts.

The startup manufactures hygienic water taps that utilize advanced filtration technology to provide both still and sparkling water, with capabilities to heat and chill. These taps deliver clean drinking water solutions for restaurants, offices, and homes, reducing reliance on single-use plastic bottles and promoting environmental sustainability.

This startup manufactures carbon-negative concrete that incorporates surface materials designed to absorb carbon dioxide, effectively mimicking the carbon absorption of trees. By providing a sustainable alternative to traditional building materials, the company enables construction projects to significantly lower their environmental impact.

Core Hydration utilizes a proprietary seven-stage reverse osmosis process to purify water, removing harmful impurities while balancing the pH to match the body's natural level of 7.4. The product is enhanced with electrolytes and minerals for taste, providing a hydration solution tailored to support various wellness lifestyles.

LARQ utilizes PureVis™ and Nano Zero technologies to purify drinking water by eliminating contaminants and improving taste, ensuring access to clean hydration. The company addresses the issue of unsafe tap water quality, providing a sustainable solution for healthier drinking options.

Spotless Water operates a network of self-service filling stations that dispense ultra-pure water, processed through multiple filtration methods to achieve 0 Total Dissolved Solids (TDS). This service provides a convenient and sustainable solution for various applications, such as car detailing and window cleaning, available 24/7 at competitive prices starting from 3.9p per litre.

Via Separations develops proprietary membrane materials that reduce energy consumption in thermal separations by up to 90%, enhancing efficiency in industrial processes. Their technology addresses the significant energy demands of manufacturing sectors such as pulp and paper, chemicals, and refining, delivering substantial cost savings and operational flexibility.

Rainmaker employs cloud seeding technology, utilizing radar validation and weather-resistant drones to enhance precipitation for agriculture, water supply, and ecosystem restoration. This approach directly addresses freshwater scarcity caused by climate change and increasing global consumption, providing a scalable solution to replenish vital water resources.

UniSieve develops molecular separation membranes for efficient purification of chemical feedstocks and tailored carbon capture solutions for heavy-emitting industries. Their technology addresses the challenges of high product costs and environmental impact by enhancing separation processes in various applications, including waste-to-energy and cement plants.

SiTration develops ultra-durable filtration membranes designed for efficient separations in extreme environments, utilizing advanced polymer technology to enhance performance and longevity. These membranes address the challenges of filtration in harsh conditions, significantly reducing maintenance costs and downtime for industrial applications.

Hydraloop develops a water recycling system that captures and purifies domestic wastewater for reuse in showers, gardens, and laundry, promoting water circularity in urban environments. This technology addresses the growing demand for sustainable water management solutions amid increasing water scarcity.

Aqualung Carbon Capture develops membrane technology that utilizes water to efficiently capture carbon emissions from heavy industrial processes, such as natural gas and cement production. Their solution aims to provide a cost-effective and environmentally friendly method for reducing greenhouse gas emissions, facilitating the transition to decarbonization.

The startup has developed catalytic hydrothermal gasification (cHTG) technology that converts biomass residues and industrial waste into renewable gas, fertilizer, and clean water. This process enhances wastewater treatment efficiency while promoting sustainable waste management and resource recovery.

Trellis Airdevelops low‑energy dehumidification technology that delivers dry air while reducing power consumption compared with conventional systems. Their solutions target commercial and industrial facilities seeking to control humidity for process stability, equipment longevity, and indoor comfort. The company commercializes the technology through the sale and licensing of hardware units and associated service contracts, generating revenue from product sales and ongoing maintenance.

Aquacycl utilizes BioElectrochemical Treatment Technology (BETT) to efficiently treat high-strength industrial wastewater while ensuring regulatory compliance and reducing greenhouse gas emissions by up to 90%. Their system offers significant cost savings by eliminating hauling fees and lowering energy consumption, enabling businesses to focus on their core operations.

The startup develops thermal batteries that capture and store waste heat from industrial processes, enabling high-density thermal energy retention without energy loss over time. This technology provides factories with a renewable heat source for building heating, reducing reliance on fossil fuels.

The startup develops a bio-based adsorbent material that selectively captures micro-pollutants such as pesticides and pharmaceuticals from contaminated water and wastewater. This technology enables clients to meet stringent wastewater regulations while protecting local ecosystems from harmful pollutants.

ElectraLith develops a direct lithium extraction and refining technology that produces battery-grade lithium hydroxide in a single, modular process without the use of water or chemicals. This method addresses the environmental impact of traditional lithium production by utilizing renewable energy, enhancing sustainability in lithium supply chains.

Matter. develops the Regen.™ technology, a patented filtration system that captures and recycles microplastics from wastewater, particularly targeting emissions from textiles and laundry. Each year, approximately 650,000 metric tonnes of microplastics enter the oceans, and Matter. aims to mitigate this pollution through efficient separation processes across various markets.

The startup provides a subscription-based drinking water distribution service for urban and peri-urban areas of Senegal, utilizing ordinary water connections and submeters to ensure efficient delivery. It addresses the lack of reliable access to clean drinking water by offering tailored solutions, including social connections and water extension services, to meet diverse community needs.

CarbonBlue develops proprietary technologies to decarbonize industrial value chains while increasing efficiency and profitability. The EcoLime solution provides low-emission lime production, and AquaFix enables carbon dioxide removal integrated with water infrastructure. These solutions allow industries to transition toward a sustainable, carbon-neutral economy through environmental rehabilitation.

Utilizes a recirculating shower system that captures, cleans, and reuses water in real time, reducing water and energy consumption by up to 80%. This technology provides a high-pressure, hygienic shower experience with a flow rate of 3 GPM while using only 0.5 GPM, making it suitable for residential, modular, and off-grid applications.

Helios is developing sustainable chemical processes that utilize renewable feedstocks to produce essential materials with reduced environmental impact. The company focuses on minimizing pollution and resource depletion in manufacturing across various industries.