31 Best Water Purification Startups to Watch in 2025

The Definitive Seedtable Ranking of Water Purification Startups

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 31 start-ups with an aggregate funding of $404.3m. The average funding per company in this subset is $13.0m.

Last update to the database: Feb 18, 2025. See changelog.

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5

Funding Rounds

$9.1m

Money raised

Puraffinity is a company using customized granular media (CGM) to remove pollutants and contaminants from water supplies.

Location:

Key people:

1

Funding Rounds

$1.9m

Money raised

Company manufacturing an economical industrial wastewater management system

Location:

Key people:

4

Funding Rounds

$20.0m

Money raised

Oasys Water was a company that developed water treatment and filtration products.

Key people:

5

Funding Rounds

$2.1m

Money raised

Modular and compact unit that provides renewable energy and clean water in remote areas.

Key people:

2

Funding Rounds

$51.5m

Money raised

Bevi is a Boston-based company founded in 2013 by Frank Lee, Sean Grundy and Eliza Becton.

Location:

Key people:

9

Funding Rounds

$8.0m

Money raised

SaltWorks, Inc. is a Woodinville, Washington-based wastewater treatment company developing industrial desalination, brine treatment, and zero liquid discharge technology.

5

Funding Rounds

$97.7m

Money raised

Adionics is a Paris-based company.

Location:

Key people:

7

Funding Rounds

$19.7m

Money raised

Axine Water Technologies is a Vancouver-based developer of wastewater treatment technologies and solutions.

3

Funding Rounds

$5.1m

Money raised

Puralytics is a company founded by Mark Owen that develops technology on water purification.

10

Funding Rounds

$7.8m

Money raised

Cerahelix is a company founded in 2011 by Donald MacKay.

3

Funding Rounds

$9.0m

Money raised

Cyclopure develops adsorbents that remove forever chemicals and other micropollutants to make tap water safe.

1

Funding Rounds

$4.3m

Money raised

uFraction8 is a microfluidics-based filtration systems provider for bio-manufacturers founded in 2017 by Brian Miller.

Location:

Key people:

1

Funding Rounds

$25.0k

Money raised

A company making knowledge management platform for the water treatment industry.

2

Funding Rounds

$20.0m

Money raised

TreaTech is a hydrothermal gasification process to produce biogas founded in 2015 by Alberto Mian, Frederic Juillard, Gael Peng, Jeremy Luterbacher and Raquel Zambrano Varela.

Location:

Key people:

4

Funding Rounds

Wota is a Tokyo-based company.

4

Funding Rounds

$22.7m

Money raised

Magna Imperio Systems Corp. is a Texas-based company.

3

Funding Rounds

$4.0m

Money raised

ViaeX Technologies Inc. is a San Francisco-based company founded in 2016 by Vivian Qu, Rui Wang and Hudson Liao.

Location:

Key people:

1

Funding Rounds

$3.0m

Money raised

Cambrian Innovation is a Watertown, Massachusetts-based company founded in 2006 by Jared Dusha, Matthew Silver and Justin Buck.

1

Funding Rounds

$10.6m

Money raised

mitte is a Germany-based company founded by Karan Sarin, Moritz Waldstein-Wartenberg and Faebian Bastiman.

2

Funding Rounds

$23.7m

Money raised

FilterBoxx Water & Environmental is a Calgary-based provider of water treatment solutions for industrial, municipal, resort and aboriginal clients.

Location:

Key people:

1

Funding Rounds

$8.4m

Money raised

Liquidity Nanotech is a company founded in 2009 by Benjamin Hsiao, Victor W. Hwang, Michael Hawes, Mark Kachur, Ben Chu, Dean Spatz and Benjamin Hsiao.

1

Funding Rounds

$137.8k

Money raised

Aquammodate is a Gothenburg-based company.

1

Funding Rounds

$21.0m

Money raised

Organica Water is a Budapest-based water treatment company offering solutions for treating and recycling wastewater.

3

Funding Rounds

$24.0m

Money raised

MIOX is an Albuquerque, New Mexico-based company founded in 1994.

1

Funding Rounds

$2.7m

Money raised

Manufacturer of Chlorine Dioxide products and dosing systems.

1

Funding Rounds

$7.0m

Money raised

Jibu Tanzania is a company founded in 2012 by Giacomo Gentili.

1

Funding Rounds

$1.8m

Money raised

Bluetector is a company founded in 2012.

2

Funding Rounds

$7.7m

Money raised

Fluid-Screen is a Beverly, Massachusetts-based company.

1

Funding Rounds

$3.8m

Money raised

Glanris Water Systems is a water purification company.

1

Funding Rounds

$5.0m

Money raised

Company

1

Funding Rounds

$2.5m

Money raised

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