Legionella Shower Filter – Nephros is a global medical device company that focuses on the development and commercialization of liquid purification filters that combine a best-in-class purification to flow rate ratio with filter endurance. Nephros was founded in 1997, by healthcare professionals affiliated with Columbia University Medical Center, initially to address the needs of chronic renal failure patients. The company has developed an alternative to current hemodialysis therapy known as Mid-dilution hemodiafiltration (mid-HDF). Nephros’ proprietary blood purification technologies enable mid-HDF to be offered to chronic renal failure patients.