9 Best Water Treatment Startups to Watch in 2025

The Definitive Seedtable Ranking of Water Treatment 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 9 start-ups with an aggregate funding of $192.4m. The average funding per company in this subset is $21.4m.

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

Track over 71,000 companies

Discover
Fast-growing Global startups

Seedtable uses technology and people to track over 71,000 companies to help you find the right ones to partner with.

Pricing + Sign up
Lygos logo

Lygos

An industrial biotech company developing a commercial bioprocess for manufacturing bio-based malonic acid.

11

Funding Rounds

$50.0m

Money raised

Sutro logo

Sutro

Sutro is a San Francisco-based company founded in 2012 by Ravi Kurani.

2

Funding Rounds

$85.4m

Money raised

Resolute Marine Energy, Inc logo

Resolute Marine Energy, Inc

Resolute Marine Energy, Inc is a Boston-based renewable energy company.

5

Funding Rounds

$2.5m

Money raised

Onvector LLC logo

Onvector LLC

Plasma Vortex technology to address costly water treatment in industrial and waste settings.

1

Funding Rounds

$280.0k

Money raised

Water Pigeon logo

Water Pigeon

Water Pigeon is a San Diego-based company founded in 2016 by Clay Melugin.

4

Funding Rounds

$2.5m

Money raised

Hortau logo

Hortau

Hortau is a company founded in 2002.

4

Funding Rounds

$50.0m

Money raised

Droople logo

Droople

Solution for businesses to efficiently manage their fleet of water-driven assets and buildings.

1

Funding Rounds

$1.7m

Money raised

Skipper NDT logo

Skipper NDT

Skipper NDT is a company founded in 2016 by Maher Kassir.

1

Funding Rounds

$82.6k

Money raised

Flow Loop logo

Flow Loop

Flow Loop is a smart showering solutions designed for any bathroom founded in 2016.

1

Funding Rounds