Top list · Worldwide

Water tech startups worldwide

32 water tech startups worldwide have raised money in rounds we track. These are the 32 that have raised the most, $588M between them, with the United States the most common home.

$588Mraised by these 32
32on our record in all
United Statesmost common home
Rainmakerraised the most
  1. 1RainmakerRainmaker is a New York-based crypto and DeFi company that specializes in a mobile-first, account-abstraction wallet.

    Rainmaker is a New York-based crypto and DeFi company that specializes in a mobile-first, account-abstraction wallet.

    Founded 2022New York, United States$126Mlast round Sept 2026
  2. 2WintFounded -Sweden$71Mlast round Sept 2026
  3. 3HydrosatHydrosat is a deep-tech and climate technology company focused on Earth Observation through advanced thermal infrared satellite imagery and AI-powered analytics.

    Hydrosat is a deep-tech and climate technology company focused on Earth Observation through advanced thermal infrared satellite imagery and AI-powered analytics.

    Founded 2017Earth City, United States$70Mlast round Sept 2026
  4. 4ZwitterCoZwitterCo is a leader in advanced membrane solutions for industrial and agricultural water treatment, founded in 2018 as a spinout from Tufts University.

    ZwitterCo is a leader in advanced membrane solutions for industrial and agricultural water treatment, founded in 2018 as a spinout from Tufts University.

    Founded 2018Woburn, United States$58Mlast round Oct 2026
  5. 5Claros TechnologiesClaros Technologies is an advanced materials company that develops safe and sustainable products with zero toxic waste.

    Claros Technologies is an advanced materials company that develops safe and sustainable products with zero toxic waste.

    Founded 2018Minneapolis, United States$55Mlast round Aug 2026
  6. 6Pennsylvania American WaterPennsylvania American Water provides high-quality and reliable water and wastewater services.

    Pennsylvania American Water provides high-quality and reliable water and wastewater services.

    Founded 1965Camden, United States$43Mlast round Oct 2026
  7. 7AquaVenture HoldingsAquaVenture Holdings is a water purification company that specializes in the service industry.

    AquaVenture Holdings is a water purification company that specializes in the service industry.

    Founded 2006United States$30Mlast round May 2015
  8. 8Vital LyfeVital Lyfe is a Climatech product manufacturing firm that develops systems to produce safe drinking water from a range of natural sources.

    Vital Lyfe is a Climatech product manufacturing firm that develops systems to produce safe drinking water from a range of natural sources.

    Founded -Hawthorne, United States$24Mlast round Dec 2025
  9. 9FarmBotFounded -Australia$22Mlast round Aug 2026
  10. 10CASTALIECastalie is a French impact company that specializes in sustainable water solutions for the hospitality, restaurant, and corporate sectors.

    Castalie is a French impact company that specializes in sustainable water solutions for the hospitality, restaurant, and corporate sectors.

    Founded 2011Boulogne-Billancourt, France$15Mlast round Jun 2020
  11. 11SunCultureSunCulture is a Kenyan agritech and climate-tech company founded in 2012, headquartered in Nairobi.

    SunCulture is a Kenyan agritech and climate-tech company founded in 2012, headquartered in Nairobi.

    Founded 2012Nairobi, Kenya$15Mlast round Sept 2025
  12. 12AquanexaAquanexa is an industrial utility group that specializes in management, and digitalization of water networks, and associated assets.

    Aquanexa is an industrial utility group that specializes in management, and digitalization of water networks, and associated assets.

    Founded -Milan, Italy$9.3Mlast round Jun 2025
  13. 13DrizzleXDrizzleX is an Israeli startup specializing in smart water technology, focusing on IoT-based water submetering solutions for multi-family residential buildings.

    DrizzleX is an Israeli startup specializing in smart water technology, focusing on IoT-based water submetering solutions for multi-family residential buildings.

    Founded 2019Santa Fe Springs, United States$9.1Mlast round Oct 2026
  14. 14SubecaSubeca is a smart water technology company that offers a fully wireless water management platform.

    Subeca is a smart water technology company that offers a fully wireless water management platform.

    Founded 2016Richardson, United States$9.0Mlast round Oct 2026
  15. 15Solinas IntegritySolinas Integrity is a Chennai-based deep-tech and climate-tech startup founded in 2018 by IIT Madras alumni.

    Solinas Integrity is a Chennai-based deep-tech and climate-tech startup founded in 2018 by IIT Madras alumni.

    Founded 2018Chennai, India$5.5Mlast round Aug 2025
  16. 16Hello KleanFounded 2020United Kingdom$5.0Mlast round Mar 2026
  17. 17MimblyWe are a Sweden-based cleantech company with a mission to provide the best and most sustainable water and microplastic solutions to the world, helping businesse

    We are a Sweden-based cleantech company with a mission to provide the best and most sustainable water and microplastic solutions to the world, helping businesse

    Founded 2017Gothenburg, Sweden$3.5Mlast round Nov 2025
  18. 18SolaqSolaq International B.V.

    Solaq International B.V.

    Founded 2023Amsterdam, Netherlands$3.5Mlast round Sept 2025
  19. 19HULO.aiHULO.ai is a Dutch startup founded in 2021, specializing in WaterTech and DeepTech.

    HULO.ai is a Dutch startup founded in 2021, specializing in WaterTech and DeepTech.

    Founded 2021Leeuwarden, Netherlands$2.7Mlast round Oct 2025
  20. 20EnaxiomEnaxiom is an Australian climate-tech company based in Sydney, founded in 2023.

    Enaxiom is an Australian climate-tech company based in Sydney, founded in 2023.

    Founded 2023Sydney, Australia$1.8Mlast round May 2026
  21. 21ShadrinpondsShadrin Ponds is an AI-native platform helping water-dependent companies manage risk, optimize resources, and advance water security.

    Shadrin Ponds is an AI-native platform helping water-dependent companies manage risk, optimize resources, and advance water security.

    Founded -Hamilton, United States$1.8Mlast round Aug 2025
  22. 22WaterwhelmWaterwhelm is an award-winning company that is commercialising a patent-protected membrane technology for wastewater treatment.

    Waterwhelm is an award-winning company that is commercialising a patent-protected membrane technology for wastewater treatment.

    Founded 2018Edinburgh, United Kingdom$1.5Mlast round Mar 2025
  23. 23Kara WaterKara Water manufactures air-to-water devices and self-refilling coffee machines that extract water from air and add minerals.

    Kara Water manufactures air-to-water devices and self-refilling coffee machines that extract water from air and add minerals.

    Founded 2017New York, United States$1.5Mlast round Jun 2026
  24. 24WatergateWatergate is a climate technology product manufacturing company.

    Watergate is a climate technology product manufacturing company.

    Founded 2023London, United Kingdom$857Klast round Aug 2025
  25. 25AugenAugen provides innovative water analysis and treatment solutions, driven by a mission to ensure clean drinking water.

    Augen provides innovative water analysis and treatment solutions, driven by a mission to ensure clean drinking water.

    Founded -Rio Grande, Brazil$835Klast round Jul 2023
  26. 26NovNatNovNat develops advanced materials and systems for atmospheric water harvesting.

    NovNat develops advanced materials and systems for atmospheric water harvesting.

    Founded -Birmingham, United Kingdom$775Klast round Mar 2025
  27. 27Safe H2O Inc.Access to safe drinking water is a serious global challenge.

    Access to safe drinking water is a serious global challenge.

    Founded 2013San Jose, United States$700Klast round Jan 2014
  28. 28Drink Purely PVT LimitedWe provides high-quality water services, ensuring clean, safe, and pure drinking water for homes and businesses.

    We provides high-quality water services, ensuring clean, safe, and pure drinking water for homes and businesses.

    Founded -Brzeg, Poland$500Klast round Oct 2022
  29. 29WatermarqA new approach to valuing water

    A new approach to valuing water

    Founded 2018Oxford, United Kingdom$489Klast round Mar 2023
  30. 30EsularEsular is a Turkish technology company founded in 2018, specializing in smart agriculture, IoT, and AI-driven water management solutions.

    Esular is a Turkish technology company founded in 2018, specializing in smart agriculture, IoT, and AI-driven water management solutions.

    Founded 2019Istanbul, Türkiye$175Klast round Aug 2023
  31. 31WellsForAllFounded -Ghana$150Klast round Jan 2026
  32. 32Rapid Radicals TechnologyRapid Radicals Technology develops wastewater treatment technology for municipal sewerage districts to address combined sewer overflows.

    Rapid Radicals Technology develops wastewater treatment technology for municipal sewerage districts to address combined sewer overflows.

    Founded 2016Milwaukee, United States$100Klast round Jun 2022
Total fundinghow the list is ranked
15 November 2026updated nightly
Rounds we tracksource: Millionrounds

Companies whose funding rounds we classed as this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

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