When was NanoH2O founded?

NanoH2O was founded in 2005 and raised its 1st funding round 2 years after it was founded.

Where is NanoH2O located?

NanoH2O is headquartered in Los Angeles, United States. It is registered at Torrance, California.

How many employees does NanoH2O have?

As of May 31, 2026, the latest employee count at NanoH2O is 2.

Is NanoH2O a funded company?

NanoH2O is a funded company, having raised a total of $89.9M across 9 funding rounds to date. The company's 1st funding round was a $***** Series A round, raised on Apr 2007.

How much is NanoH2O worth?

The last known valuation of NanoH2O was $***** as of Apr 30, 2012.

When was the latest funding round of NanoH2O?

NanoH2O's latest funding was a $***** Series D round on Dec 03, 2025, with participation from 2 investors. Its primary sector is Water and Wastewater Management Tech. In United States, the Water and Wastewater Management Tech sector has seen $64.3M in funding in 2026 to date.

Where does NanoH2O rank among its competitors?

NanoH2O ranks 3rd amongst 174 active competitors, of which 19 are funded. It stands 2nd in terms of total funding among its competitors. The most recent competitor to raise funding was NanoH2O, which secured an undisclosed amount in Dec, 2025.

Who are the top competitors of NanoH2O?

NanoH2O's top competitors include ZwitterCo, Active Membranes and Swirltex. Among them, NanoH2O secured the most recent funding round in December, 2025.

NanoH2O - 2026 Company Profile, Team, Funding & Competitors

Q: Is NanoH2O an acquired company?

NanoH2O got acquired by Lgchem on Mar 14, 2014.

Company Details

Developer of reverse osmosis membranes for water treatment. The company developed thin-film nanocomposite QuantumFlux membranes for seawater and brackish water desalination, as well as wastewater reclamation.

Website: nanoh2o.com
Registered Address: Torrance, California

Key Metrics

Founded Year

2005

Location

Los Angeles, United States

Stage

Acquired

Total Funding

$89.9M in 9 rounds

Latest Funding Round

Series D, Dec 03, 2025, $*****

Last Known Valuation

$***** as on Apr 30, 2012

Investors

BASF & 12 more

Ranked

3^rd among 174 active competitors

Employee Count

2 as on May 31, 2026

Similar Companies

Cerahelix & 98 more

Exit Details

Acquired by Lgchem (Mar 14, 2014)

View NanoH2O's full profile

NanoH2O is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
NANO H2O INC. CIN: 208643276 , United States, Active	Dec 31, 1999	-	15 (As on Dec 31, 2023)	-

NanoH2O got acquired by Lgchem on Mar 14, 2014 at an acquisition amount of $*****.

Click here to take a look at NanoH2O's acquisition in detail

NanoH2O has raised a total funding of $89.9M over 9 rounds. Its first funding round was on Apr 2007. Its latest funding round was a Series D round on Dec 03, 2025 for $*****. 2 investors participated in its latest round. NanoH2O has 13 institutional investors.

Here is the list of recent funding rounds of NanoH2O:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Dec 03, 2025	3827730	Series D	9062237	6685295	9868423	4864059
Apr 30, 2012	8142192	Conventional Debt	9443200	9866776	2585746	Comerica & 9 more
Apr 30, 2012	2557482	Series C	7466280	4719784	Total & 1 more	Khosla Ventures & 6 more

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View details of NanoH2O's funding rounds and investors

The founders of NanoH2O is Jeff Green.

Here are the details of NanoH2O's key team members:

Jeff Green: Founder of NanoH2O and founder of 1 other company.
Contact Info: 1 email address

View details of NanoH2O's Founder profiles and Board Members

NanoH2O's employee count trend

NanoH2O has 2 employees as of May 26. Here is NanoH2O's employee count trend over the years:

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Top competitors of NanoH2O include ZwitterCo, Active Membranes and Swirltex. Here is the list of Top 10 competitors of NanoH2O, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	ZwitterCo 2018, Somerville (United States), Series B	Manufacturer of wastewater treatment systems using membrane technology	$102M	DCVC, Evok Innovations & 17 others	58/100
2nd	Active Membranes 2022, Los Angeles (United States), Seed	Developer of electro-active membrane technology for desalination and water treatment	$3.24M	Natural Ventures, Echo River Capital & 1 others	54/100
3rd	NanoH2O 2005, Los Angeles (United States), Acquired	Developer of reverse osmosis membranes for water treatment	$89.9M	Comerica, Mubadala & 11 others	53/100
4th	Swirltex 2015, Calgary (Canada), Seed	Provider of buoyancy based waste water treatment solutions	$4.27M	Sustainable Development Technology Canada, Canadian Technology Accelerator ... & 5 others	51/100
5th	H2O Innovation 2000, Quebec City (Canada), Acquired	Provider of comprehensive solutions for water, wastewater, and water reuse	-	BDC	50/100
6th	Liquidity 2009, Alameda (United States), Series A	Nanotech membranes based potable water purifiers	$10.6M	Singularity Investments, Capricorn & 3 others	48/100
7th	Nanosun 2013, Singapore (Singapore), Acquired	Nanosun is a Singapore based membrane manufacturing company	$3.1M	Nanyang Technological University, NTUitive ... & 12 others	45/100
8th	Cerahelix 2011, Orono (United States), Series B	Provider of nanotech-based water treatment solutions for industries	$6.12M	Maine Venture Fund, MassChallenge & 12 others	41/100
9th	MI Systems 2009, Houston (United States), Series A	Water treatment solutions	$13.6M	757 Angels, Candy Ventures	39/100
10th	NIRTECH 2014, Thane (India), Unfunded	Provider of solutions for water-related challenges, including wastewater treatment	-	-	38/100