The 650651 H Viqua Professional Plus UltraViolet Disinfection System is an effective first line of defense against microbial contaminants such as protozoan cysts, bacteria, and viruses. Ultraviolet sterilization works by exposing your water to UV light waves; the UV light waves then deactivate the DNA of microorganisms. Once deactivated, the microorganisms can no longer reproduce in your drinking water. UV disinfection is an effective solution for many settings including rural homes, nursing homes, hospitals, schools, hotels, restaurants, and resorts. The UV bulb should be replaced every 9-12 months and the quartz sleeve should be cleaned every 3 months. For maximum contaminant reduction, consider pairing your 50651 H Viqua Professional Plus UltraViolet Disinfection System with a sediment reduction pre-filter to reduce sediment prior to UV treatment. Order the H Viqua System today!