| # | Company | Location | Employees | Total Funding | Last Round | Last Funded |
|---|---|---|---|---|---|---|
| 1 |
Biobot Analytics
Biobot Analytics offers a wastewater data platform delivering population-level h…
|
Cambridge | 11 - 50 | $41.4M | Series A | 2025-06-06 |
| 2 |
Klir
Klir is the Operational Data Hub for water utilities, replacing fragmented syste…
|
Reno | 51 - 100 | $37.1M | Series B | 2026-01-22 |
| 3 |
Vital Lyfe
Vital Lyfe is a Climatech product manufacturing firm that develops systems to pr…
|
Hawthorne | 1 - 10 | $42.1M | Seed | 2025-12-16 |
| 4 |
Pennsylvania American Water
Pennsylvania American Water provides high-quality and reliable water and wastewa…
|
Mechanicsburg | 1K - 5K | $171.6M | Grant | 2026-04-16 |
| 5 |
Genesis Systems
Genesis Systems provides methods for generating sustainable water resources and …
|
Tampa | 11 - 50 | $46.1M | Series Unknown | 2025-01-10 |
| 6 |
Kadeya
Kadeya is a closed-loop water vending business that utilizes digitally connected…
|
Chicago | 1 - 10 | $11.3M | Series Unknown | 2025-12-03 |
| 7 |
SolmeteX
SolmeteX is a supplier of dental products for water treatment and waste manageme…
|
Northborough | 51 - 100 | $200.0M | Private Equity | 2025-10-15 |
| 8 |
Aris Water Solutions
Aris Water Solutions develops and operates produced water infrastructure and rec…
|
Houston | 251 - 500 | $500.0M | Post Ipo Debt | 2025-03-11 |
| 9 |
Hint
Hint is a beverage startup that produces natural flavored unsweetened essence wa…
|
San Francisco | 101 - 250 | $51.5M | Series D | 2020-08-18 |
| 10 |
OceanWell
OceanWell produces fresh water from the deep sea to help solve the water crisis.
|
Los Angeles | 11 - 50 | $15.0M | Series A | 2024-11-20 |
| 11 |
NPHarvest
NPHarvest is a company with expertise in organic waste management, wastewater tr…
|
Espoo | 1 - 10 | $3.7M | Grant | 2026-01-20 |
| 12 |
VVater
America's Next Water Company
|
Austin | 11 - 50 | $7.8M | Undisclosed | 2024-11-21 |
| 13 |
Flocean
Flocean delivers subsea pumping systems for providing clean drinking water in th…
|
Oslo | 11 - 50 | $31.5M | Series A | 2025-11-18 |
| 14 |
Noriware
Noriware is a packaging materials manufacturing company that offers seaweed-base…
|
Brugg | 1 - 10 | $6.1M | Seed | 2026-01-15 |
| 15 |
WaterEquity
WaterEquity finds investment possibilities in the water and sanitation industry.
|
Kansas City | 11 - 50 | $15.0M | Debt Financing | 2025-02-28 |
| 16 |
Water.org
Water.org, a non-profit organization providing aid to developing countries that …
|
Kansas City | 51 - 100 | $17.2M | Grant | 2024-03-21 |
| 17 |
Kemira
Kemira products and delivers water treatment, Fiber production, and fibre-based …
|
Helsinki | 1K - 5K | $192.9M | Post Ipo Debt | 2025-10-20 |
| 18 |
Loonen
Loonen is a company that offers clean and pure bottled water.
|
Bedford | 1 - 10 | $6.1M | Seed | 2025-12-12 |
| 19 |
Thames Water
Thames Water is a water and wastewater company that manages water supply, treatm…
|
Reading | 5K - 10K | $2.9B | Debt Financing | 2024-11-13 |
| 20 |
Aclarity
Aclarity is a VC-backed cleantech startup developing and selling water treatment…
|
Hadley | 11 - 50 | $23.8M | Series A | 2023-11-02 |
| 21 |
VideoRay
VideoRay is the largest volume producer of Underwater ROVs (Remotely Operated Ve…
|
Pottstown | 1K - 5K | $4.0M | Grant | 2023-04-20 |
| 22 |
Avnos
Avnos is commercializing technology to capture CO2 without consuming water, prod…
|
Santa Monica | 11 - 50 | $133.0M | Debt Financing | 2025-11-06 |
| 23 |
Aquablu
Aquablu makes hydration solutions that are so good, people forget they are also …
|
Amsterdam | 51 - 100 | $8.1M | Seed | 2025-06-11 |
| 24 |
Cirkul
Cirkul is a beverage company that makes drinking water with delicious and nutrit…
|
Tampa | 251 - 500 | $111.6M | Series C | 2022-06-13 |
| 25 |
Gradiant
Gradiant is a solutions provider and developer of cleantech water projects for a…
|
Woburn | 1K - 5K | $442.4M | Debt Financing | 2025-10-16 |
| 26 |
Flow Alkaline Spring Water
Flow Water is a social water brand, dedicated to the pursuit of positive experie…
|
Toronto | 101 - 250 | $62.7M | Post Ipo Debt | 2025-06-04 |
| 27 |
KETOS
KETOS provides automated water quality monitoring with real-time data and predic…
|
Milpitas | 51 - 100 | $48.2M | Private Equity | 2024-05-21 |
| 28 |
ZwitterCo
ZwitterCo provides membrane solutions for the treatment of highly-impaired waste…
|
Woburn | 51 - 100 | $98.8M | Series B | 2024-07-09 |
| 29 |
Epic Cleantec
Epic Cleantec is a full-service water technology company providing turnkey waste…
|
San Francisco | 11 - 50 | $25.4M | Series B | 2024-11-21 |
| 30 |
Xatoms
Xatoms develops novel photocatalysts to create efficient and sustainable water t…
|
Toronto | 11 - 50 | $2.5M | Pre Seed | 2025-06-19 |
| 31 |
The Nature Conservancy
The Nature Conservancy is a non-profit conservation organization that works to p…
|
Arlington | 5K - 10K | $120.1M | Grant | 2025-11-17 |
| 32 |
KloudGin
KloudGin is a combined one-cloud industry-focused field service and asset manage…
|
Sunnyvale | 101 - 250 | $8.2M | Series A | 2020-07-29 |
| 33 |
Source
Source is a developer and manufacturer of solar-powered devices designed to extr…
|
Scottsdale | 101 - 250 | $364.4M | Series D | 2022-07-19 |
| 34 |
American Water
American Water is a waste water utility company.
|
Voorhees | 5K - 10K | $900.6M | Grant | 2024-02-21 |
| 35 |
Well Water Finders
Well Water Finders provides onsite groundwater surveys using patented sensing te…
|
Meridian | 1 - 10 | $448K | Grant | 2025-12-19 |
| 36 |
Gross-Wen Technologies
Gross-Wen Technologies is a biotechnology company that specializes in the fields…
|
Slater | 11 - 50 | $14.1M | Series Unknown | 2025-06-13 |
| 37 |
Aquagga, Inc.
Cleantech / ClimateTech company Ending PFAS 'Forever Chemical' pollution through…
|
Tacoma | 11 - 50 | $10.5M | Grant | 2025-08-01 |
| 38 |
ZenWTR
ZenWTR is a vapor distilled alkaline water bottled in recyclable ocean-bound pla…
|
Irvine | 11 - 50 | $48.7M | Series B | 2023-12-26 |
| 39 |
DrizzleX
Solving the last mile problem of water waste in apartment buildings
|
Montebello | 11 - 50 | $5.5M | Seed | 2023-07-20 |
| 40 |
Principle Power
Principle Power offers wind installations for the deep-water, offshore wind ener…
|
Seattle | 11 - 50 | $27.9M | Secondary Market | 2023-05-25 |
| 41 |
Tidal Metals
Tidal Metals produces decarbonized magnesium metal from seawater and desalinatio…
|
Princeton | 11 - 50 | $15.2M | Seed | 2024-09-19 |
| 42 |
ASTERRA
Satellite-based Infrastructure Intelligence Providing data driven solutions for …
|
Rosh Ha'ayin | 51 - 100 | $6.0M | Series Unknown | 2021-03-24 |
| 43 |
Waterdrop
Waterdrop encourage to drink more water with its flavored cubes dissolving in wa…
|
Osterreicher | 251 - 500 | $67.4M | Series Unknown | 2024-04-02 |
| 44 |
OCEANIX
OCEANIX is a blue tech company that designs and builds floating cities for peopl…
|
New York | 11 - 50 | $2.1M | Series Unknown | 2022-01-01 |
| 45 |
Waterly
A simple platform for data and asset management designed to help water & wastewa…
|
Crystal Lake | 11 - 50 | $4.0M | Series A | 2025-08-14 |
| 46 |
Brightwater Tools
Brightwater Tools is focused on shifting the paradigm that allows human waste to…
|
Brattleboro | 11 - 50 | $1.6M | Seed | 2024-12-04 |
| 47 |
Mapistry
Mapistry develops EHS software for environmental compliance, inspections, emissi…
|
Berkeley | 11 - 50 | $4.0M | Seed | 2020-11-09 |
| 48 |
ACCIONA
ACCIONA is the development and management of infrastructure, renewable energy, w…
|
Alcobendas | c 10001 max | $2.1B | Post Ipo Debt | 2025-09-29 |
| 49 |
Aquaria
Aquaria provides solutions for securing access to clean water and adapts to chan…
|
San Francisco | 11 - 50 | $112.0M | Series Unknown | 2024-11-20 |
| 50 |
bNovate Technologies
BNovate Technologies develops automated water monitoring solutions, specializing…
|
Ecublens | 11 - 50 | $23.3M | Grant | 2025-02-21 |