NanoH2O, based in El Segundo, Calif., designs, develops and manufactures thin-film nanocomposite reverse osmosis (RO) membranes for seawater desalination and other water-treatment applications. Its QuantumFlux membranes deliver higher flux and salt rejection, improved energy efficiency and are NSF Standard 61 certified for drinking water. QuantumFlux products are available in standard 8-inch elements that fit new and existing desalination plants and purify water from a broad range of sources. The company says its membranes lower the energy, operating and capital costs of desalination. Proceeds from the recent financing will be used to accelerate growth, expand manufacturing capabilities and broaden product offerings. Financially, the company has raised $75 million in total equity and, with the recent debt facilities, has secured over $100 million of total debt and equity financing. NanoH2O is an El Segundo, CA-based global provider of membranes for desalination and water reuse. The company develops high-flux reverse osmosis membranes intended to increase productivity and address fouling issues in commercial desalination. It received a $400,000 grant from the U.S. Office of Naval Research to evaluate its membranes for shipboard desalination systems. Tests at the U.S. Navy Seawater Desalination Test Facility in Port Hueneme will assess fouling resistance and optimize desalination systems for high-flux operations. The research will provide a benchmark comparing NanoH2O’s technology to existing RO membranes and help validate its novel approach. The company is backed by Khosla Ventures and Oak Investment Partners.

Total raised

$61M

Funding rounds

3

Latest round

Equity

Latest activity

Apr 2012