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.
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 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
Company manufacturing an economical industrial wastewater management system
1
Funding Rounds
$1.9m
Money raised
Oasys Water was a company that developed water treatment and filtration products.
4
Funding Rounds
$20.0m
Money raised
Modular and compact unit that provides renewable energy and clean water in remote areas.
5
Funding Rounds
$2.1m
Money raised
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. 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 is a Paris-based company.
5
Funding Rounds
$97.7m
Money raised
Axine Water Technologies is a Vancouver-based developer of wastewater treatment technologies and solutions.
7
Funding Rounds
$19.7m
Money raised
Puralytics is a company founded by Mark Owen that develops technology on water purification.
3
Funding Rounds
$5.1m
Money raised
Cerahelix is a company founded in 2011 by Donald MacKay.
10
Funding Rounds
$7.8m
Money raised
Cyclopure develops adsorbents that remove forever chemicals and other micropollutants to make tap water safe.
3
Funding Rounds
$9.0m
Money raised
uFraction8 is a microfluidics-based filtration systems provider for bio-manufacturers founded in 2017 by Brian Miller.
1
Funding Rounds
$4.3m
Money raised
A company making knowledge management platform for the water treatment industry.
1
Funding Rounds
$25.0k
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.
2
Funding Rounds
$20.0m
Money raised
Wota is a Tokyo-based company.
4
Funding Rounds
Magna Imperio Systems Corp. is a Texas-based company.
4
Funding Rounds
$22.7m
Money raised
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 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 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 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 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 is a Gothenburg-based company.
1
Funding Rounds
$137.8k
Money raised
Organica Water is a Budapest-based water treatment company offering solutions for treating and recycling wastewater.
1
Funding Rounds
$21.0m
Money raised
MIOX is an Albuquerque, New Mexico-based company founded in 1994.
3
Funding Rounds
$24.0m
Money raised
Manufacturer of Chlorine Dioxide products and dosing systems.
1
Funding Rounds
$2.7m
Money raised
Jibu Tanzania is a company founded in 2012 by Giacomo Gentili.
1
Funding Rounds
$7.0m
Money raised
Bluetector is a company founded in 2012.
1
Funding Rounds
$1.8m
Money raised
Fluid-Screen is a Beverly, Massachusetts-based company.
2
Funding Rounds
$7.7m
Money raised
Glanris Water Systems is a water purification company.
1
Funding Rounds
$3.8m
Money raised
Company
1
Funding Rounds
$5.0m
Money raised
1
Funding Rounds
$2.5m
Money raised