ULTRAVIOLET WATER SYSTEM: The VIQUA IHS22-E4 system has been validated through microbial testing to inactivate the following microorganisms: Cryptosporidium, Giardia, E.Coli, and Fecal Coliform. WHOLE-HOME WATER TREATMENT: With flow rates of 22 GPM, the VIQUA IHS22-E4 system will provide UV-treated water for the entire home or small business. INTEGRATED PRE-FILTRATION: Includes two 20 filter housing with 5 micron sediment and taste/odour/lead removal cartridges. ANNUAL LAMP CHANGE: After a year, UV light weakens and isn't strong enough to properly treat your water. Replacing your lamp annually with a genuine VIQUA lamp ensures optimal system performance. COMPATIBLE REPLACEMENT PARTS: Filter = C2-02 and CMB-520-HF, Lamp = 602806, Lamp and Sleeve = 602810-103, Sleeve = 602733The Integrated Home System is a reliable, economical and chemical-free way to safeguard drinking water in any residential application. Note: The IHS22-D4 replaces the Sterilight SC320-DWS22, SCM320-DWS22 and SPV10-IHS22 systems. The IHS22-E4 Professional UV Water Treatment System by Viqua is a whole house system that comes equipped with a 5-micron sediment and carbon filter that filters out particles and contaminants even before the UV light treatment. The UV treatment then goes to work reducing bacteria, e-coli, viruses, and more that would otherwise make it past other filtration methods. With a flow rate of 22 gallons per minute, this system is perfect for commercial applications and large homes with high water demands. The system features a new interactive LCD display that allows the user to see the UV intensity status and the lamp life remaining. When the need for maintenance arises the IHS22-E4 has a visual and audible lamp change reminder giving you peace of mind that the system is functioning properly until the need for replacement is necessary. Enjoy the benefits of clean water and order your IHS22-E4 Professional UV Water Treatment System by Viqua today! ULTRAVIOLET DISINFECTION SYSTEM: The Viqua IHS22-E4 system utilizes UltraViolet light to combat waterborne pathogens while adding nothing to the water except for UV light. WHOLE-HOME WATER TREATMENT: With flow rates of 22 GPM, the Viqua IHS22-E4 system will provide safe, clean water for the entire home. While staying green by adding zero extra chemicals into the water. SAFETY STANDARD: Stainless Steel is proved to be reliable in different temperature, pressure, pH. The Viqua IHS22-E4 system comes with a safety cap and lamp plug to prevent unsafe access to the UV lamp THE VIQUA PROMISE: Whether you choose a point-of-entry or a point-of-use system, your VIQUA UV system will disinfect against microbiological contaminants, providing you and your family with treated drinking water. COMPATIBLE REPLACEMENT PARTS: Filter = C2-02 and CMB-520-HF, Lamp = 602806, Lamp and Sleeve = 602810-103, Sleeve = 602733 Features: 20" 5 Micron Sediment Prefilter 20" 5 Micron Carbon Block Filter 1" Connections Factory Pressure Tested