Viqua Sterilight S12Q-PA 12 GPM  Ultraviolet System
This high quality Sterilight ultraviolet sterilization unit is great for "whole house" residential use. The Sterilight has an easily replaceable high intensity UV sterilization lamp that delivers 30,000 mw/cm2 at 254 nm wavelength and a pure quartz lamp tube for peak UV dosage. Units are constructed with a 304 stainless steel housing, and have an onboard audible and visible on/off lamp failure alarm. The 15 gallon per minute unit (S12Q-PA) is used in larger sized residential installation.