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NanoH2O

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Enhances current polymer-based membranes with a nano-structured material that allows additional control of key membrane properties

Los Angeles, United StatesFounded 2005Chemicals
Valuation $250–500M Last recorded · 2012
Headcount <100 Current team size
Total funding $50–100M Disclosed equity funding
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About NanoH2O

NanoH2O, Inc. operated in the water treatment sector, specializing in the design, development, manufacturing, and sale of reverse osmosis (RO) membranes. The company was established in 2005 by a team that included Jeff Green, who served as the founder and CEO. Green's background includes a Bachelor of Science from the United States Naval Academy and a Master of Business Administration from the UCLA Anderson School of Management, and he brought experience from prior roles at various technology companies. The company's core technology centered on thin-film nanocomposite membranes, which aimed to enhance the efficiency of desalination processes. These membranes were engineered to offer higher water permeability while maintaining superior salt rejection, which translates to lower energy consumption and reduced operational costs for desalination plants.

The primary market for NanoH2O was large-scale desalination and water treatment facilities, serving both municipal and industrial clients globally. Its business model revolved around the direct sale of its advanced RO membranes to these facilities. The key product, marketed under the QuantumFlux brand, was a line of spiral-wound RO membranes. The distinguishing feature of these membranes was the integration of benign nanoparticles into the polyamide layer, a process that increased water flow without compromising the removal of salts and other minerals. This technological approach positioned the company to address the growing global demand for clean water by making desalination more economically viable.

A significant milestone in the company's trajectory was its acquisition by the South Korean conglomerate LG Chem in April 2014 for $200 million. Prior to the acquisition, NanoH2O had raised substantial venture capital funding from firms such as Khosla Ventures, Oak Investment Partners, and BASF Venture Capital. The acquisition integrated NanoH2O's membrane technology into LG Chem's broader water treatment solutions business, allowing the technology to be scaled and distributed more widely under the LG Chem brand.

Source: Dealroom company data

At a glance

Status
Acquired
Founded
2005
Headquarters
Los Angeles, United States
Employees
1
Open positions
None listed
Dealroom signal
27.3/100
Industry
Chemicals
Sector
Chemicals, Water Treatment, Membranes, Sustainable Development Goals, Advanced Materials, Climate Tech, Blue Economy, Water Tech, Water Management, Desalination, Climate Adaptation, DT and LS, science-based
Business model
Manufacturing

Funding history

4 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITIONOther financing Mar 2014 $0 — LG Chem —
LATE VCOther financing Apr 2012 $61M $242M Oak Investment · Keytone Ventures · BASF · Khosla Ventures —
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Growth signals

NanoH2O website traffic

Latest recorded traffic for NanoH2O is 0 monthly website visits. NanoH2O's team grew 0% over the past year.

Latest monthly visits0 1-year team growth0%
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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

8 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A1 investor entered at this stage

Series B and later6 investors entered at this stage

  • Oak Investment
  • Keytone Ventures
  • BASF
  • Comerica Bank
  • TotalEnergies Carbon Neutrality Ventures
  • Lighthouse Capital Partners

Other known investors1 additional known investor

  • LG Chem
Team profiled 10 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
🇺🇸 United States · Los Angeles HQ
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Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about NanoH2O on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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