Based in Oceanside, Calif., with sales worldwide, Hydranautics is a global leader in membrane technology. It was founded in 1963 and became part of the multi-billion dollar Nitto Denko Corporation in 1987. Hydranautics manufacturers reverse osmosis, nanofiltration, ultrafiltration and microfilm membrane products for water treatment applications. In 2005, the company introduced its line of Energy Saving Polyamide membrane technology. Its ESPA2+ membranes feature exceptional salt rejection, which allows them to be used in a variety of lower pressure applications. It is suitable for commercial, industrial and larger groundwater municipal projects.