When was Nanostone founded?

Nanostone was founded in 2004 and raised its 1st funding round 15 years after it was founded.

Where is Nanostone located?

Nanostone is headquartered in Eden Prairie, United States.

How many employees does Nanostone have?

As of Mar 31, 2026, the latest employee count at Nanostone is 64.

Is Nanostone a funded company?

Nanostone is a funded company, having raised a total of $***** in its 1st and only funding round, a Seed round on Oct 16, 2019.

When was the latest funding round of Nanostone?

Nanostone's latest funding was a $***** Seed round on Oct 16, 2019, with participation from 0 investor.

Where does Nanostone rank among its competitors?

Nanostone ranks 9th amongst 131 active competitors, of which 18 are funded. It stands 7th 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 Nanostone?

Nanostone's top competitors include NanoH2O, ZwitterCo and H2O Innovation. Among them, NanoH2O secured the most recent funding round in December, 2025.

Nanostone - 2026 Company Profile, Team, Funding & Competitors

Nanostone is an acquired company based in Eden Prairie (United States), founded in 2004. It operates as a Ceramic ultrafiltration products for water and wastewater treatment applications. Nanostone has raised $49.1K in funding. The company has 131 active competitors, including 18 funded and 8 that have exited. Its top competitors include companies like NanoH2O, ZwitterCo and H2O Innovation.

Company Details

Ceramic ultrafiltration products for water and wastewater treatment applications. Offers tubular and flat sheet ceramic membranes, and polymeric membranes. Offers over 37 MF, UF, NF and RO polymeric membranes, each with specific performance specifications and a variety of configurations to best serve specific application needs. Products find applications in food, beverage-dairy, CTX and leachate, electrocoating, and industrial and municipal water treatment applications.

Website: nanostone.com
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Email ID: *****@nanostone.com

Key Metrics

Founded Year

2004

Location

Eden Prairie, United States

Stage

Acquired

Total Funding

$49.1K in 1 round

Latest Funding Round

Seed, Oct 16, 2019, $*****

Ranked

9^th among 131 active competitors

Employee Count

64 as on Mar 31, 2026

Similar Companies

NanoH2O & 74 more

Exit Details

Acquired by True North Venture Partners (Jun 01, 2012)

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Nanostone got acquired by True North Venture Partners on Jun 01, 2012.

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

Nanostone has raised a total funding of $49.1K over 1 round.

Here is the list of recent funding rounds of Nanostone:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Oct 16, 2019	1248879	Seed	4220007	4492090	5742800	9800403

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Nanostone's employee count trend

Nanostone has 64 employees as of Mar 26. Here is Nanostone's employee count trend over the years:

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Top competitors of Nanostone include NanoH2O, ZwitterCo and H2O Innovation. Here is the list of Top 10 competitors of Nanostone, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	NanoH2O 2005, Los Angeles (United States), Acquired	Developer of reverse osmosis membranes for water treatment	$89.9M	Total, BASF & 9 others	63/100
2nd	ZwitterCo 2018, Somerville (United States), Series B	Manufacturer of wastewater treatment systems using membrane technology	$102M	DCVC, Evok Innovations & 17 others	58/100
3rd	H2O Innovation 2000, Quebec City (Canada), Acquired	Provider of comprehensive solutions for water, wastewater, and water reuse	-	BDC	55/100
4th	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	53/100
5th	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
6th	NIRTECH 2014, Thane (India), Unfunded	Provider of solutions for water-related challenges, including wastewater treatment	-	-	45/100
7th	Nanosun 2013, Singapore (Singapore), Acquired	Nanosun is a Singapore based membrane manufacturing company	$3.1M	Nanyang Technological University, NTUitive ... & 12 others	42/100
8th	Cerahelix 2011, Orono (United States), Series B	Provider of nanotech-based water treatment solutions for industries	$6.12M	Plug and Play Tech Center, MassChallenge ... & 12 others	41/100
9th	Nanostone 2004, Eden Prairie (United States), Acquired	Ceramic ultrafiltration products for water and wastewater treatment applications	$49.1K	-	34/100
10th	AQUARION 2013, Baar (Switzerland), Funding Raised	Provider of advanced water systems, solutions and technologies for the oil and gas industry	-	WAM	39/100