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.

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11

Funding Rounds

$50.0m

Money raised

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

2

Funding Rounds

$85.4m

Money raised

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

5

Funding Rounds

$2.5m

Money raised

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

Location:

Key people:

1

Funding Rounds

$280.0k

Money raised

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

4

Funding Rounds

$2.5m

Money raised

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

4

Funding Rounds

$50.0m

Money raised

Hortau is a company founded in 2002.

1

Funding Rounds

$1.7m

Money raised

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

1

Funding Rounds

$82.6k

Money raised

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

1

Funding Rounds

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

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