32 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 32 start-ups with an aggregate funding of $430.9m. The average funding per company in this subset is $13.5m.

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

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Puraffinity Ltd logo

Puraffinity Ltd

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

5

Funding Rounds

$9.1m

Money raised

Crystal IS logo

Crystal IS

Crystal IS manufactures high-performance deep UV (UVC) LEDs for water and surface disinfection, monitoring, and sterilization applications in a variety of industries.

5

Funding Rounds

$26.7m

Money raised

Hydroleap logo

Hydroleap

Company manufacturing an economical industrial wastewater management system

1

Funding Rounds

$1.9m

Money raised

Oasys Water logo

Oasys Water

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

4

Funding Rounds

$20.0m

Money raised

OffGridBox logo

OffGridBox

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

5

Funding Rounds

$2.1m

Money raised

Bevi logo

Bevi

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

2

Funding Rounds

$51.5m

Money raised

SaltWorks, Inc. logo

SaltWorks, Inc.

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

9

Funding Rounds

$8.0m

Money raised

Adionics logo

Adionics

Adionics is a Paris-based company.

5

Funding Rounds

$97.7m

Money raised

Axine Water Technologies logo

Axine Water Technologies

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

7

Funding Rounds

$19.7m

Money raised

Puralytics logo

Puralytics

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

3

Funding Rounds

$5.1m

Money raised

Cerahelix logo

Cerahelix

Cerahelix is a company founded in 2011 by Donald MacKay.

10

Funding Rounds

$7.8m

Money raised

Cyclopure, Inc. logo

Cyclopure, Inc.

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

3

Funding Rounds

$9.0m

Money raised

uFraction8 logo

uFraction8

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

1

Funding Rounds

$4.3m

Money raised

Ovivo logo

Ovivo

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

1

Funding Rounds

$25.0k

Money raised

TreaTech logo

TreaTech

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.

2

Funding Rounds

$20.0m

Money raised

Wota logo

Wota

Wota is a Tokyo-based company.

4

Funding Rounds

Magna Imperio Systems Corp. logo

Magna Imperio Systems Corp.

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

4

Funding Rounds

$22.7m

Money raised

ViaeX Technologies Inc. logo

ViaeX Technologies Inc.

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

3

Funding Rounds

$4.0m

Money raised

Cambrian Innovation logo

Cambrian Innovation

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

1

Funding Rounds

$3.0m

Money raised

mitte (company) logo

mitte (company)

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

1

Funding Rounds

$10.6m

Money raised

FilterBoxx Water & Environmental logo

FilterBoxx Water & Environmental

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

2

Funding Rounds

$23.7m

Money raised

Liquidity Nanotech logo

Liquidity Nanotech

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

$8.4m

Money raised

Aquammodate logo

Aquammodate

Aquammodate is a Gothenburg-based company.

1

Funding Rounds

$137.8k

Money raised

Organica Water (company) logo

Organica Water (company)

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

1

Funding Rounds

$21.0m

Money raised

MIOX logo

MIOX

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

3

Funding Rounds

$24.0m

Money raised

Scotmas Group logo

Scotmas Group

Manufacturer of Chlorine Dioxide products and dosing systems.

1

Funding Rounds

$2.7m

Money raised

Jibu Tanzania logo

Jibu Tanzania

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

1

Funding Rounds

$7.0m

Money raised

Bluetector logo

Bluetector

Bluetector is a company founded in 2012.

1

Funding Rounds

$1.8m

Money raised

Fluid-Screen logo

Fluid-Screen

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

2

Funding Rounds

$7.7m

Money raised

Glanris Water Systems logo

Glanris Water Systems

Glanris Water Systems is a water purification company.

1

Funding Rounds

$3.8m

Money raised

1

Funding Rounds

$5.0m

Money raised

1

Funding Rounds

$2.5m

Money raised