NanoH2O, a Los Angeles company that uses membrane materials to improve desalination and water reuse, said it has raised $5 million in funding from Khosla Ventures.

From the statement:

NanoH2O’s advanced membrane technology leverages existing membrane synthesis techniques,
requiring few modifications to existing commercial facilities, and fits within current desalination
pressure vessels without alteration. NanoH2O enhances current polymer-based membranes with
nanostructured material that allows additional ‘degrees of freedom’ in the control of membrane
properties. The result is a wide array of advantageous membrane characteristics including
improved permeability while maintaining requisite salt and contaminant rejection, both passive
and active fouling resistance, as well as ‘tunable’ membrane performance to address specific
water chemistries.