Nephros, Inc. is a medical device company that develops and sells filtration products for therapeutic applications, infection control, and water purification. The company's ultrafilters are used in hospitals and medical clinics for the removal of bacteria and viruses from water, and in dialysis centers for the treatment of patients with end-stage renal disease. Nephros also offers a line of water filtration products for the military and outdoor recreation markets. The company was founded in 1997 and is headquartered in South Orange, New Jersey.