FAQ - Ultraviolet

What is UV?

    Ultraviolet (UV) light is at the invisible, violet end of the light spectrum. Even though we can't see UV light, we are exposed to UV rays from all light sources, including the sun.


    How does ultraviolet light purify water?

    UV-C rays penetrate the cells of harmful bacteria and viruses in our drinking water, destroying their ability to reproduce. Without this ability, these organisms die and no longer pose a health threat. It is a simple but very effective process, with the system generally destroying 99.99% of harmful microorganisms.


    Why not use chlorine instead?

    Chlorine changes the tastes and odor of water. Chlorination can also produce harmful by-products called Trihalomethanes (THMs) which are linked to incidence of cancer.


    Does a UV system use a lot of energy?

    No, the UV unit will use about the same amount of energy as a 60 watt light bulb. It is a cost effective, natural way to increase water quality where microbiological contamination is present and to provide peace of mind where microbiological contamination is a greater risk.


    Why do UV purifiers require sediment pre-filtration?

    UV systems require pre-filtration to maintain effectiveness as sediment and other contaminants in the water can create a "shadow" which prevents the UV rays from reaching and disinfecting the harmful microorganisms.


    How often does the UV light bulb (lamp) need to be replaced?

    It is essential that you change your UV lamp annually. The ability of the lamp to emit UV light decreases over time. Remember - UV light is invisible! Even though the lamp is still glowing after one year, there might not be enough UV light reaching your water to be effective.


    How often do your need to replace the sleeve?

    The sleeve doesn't need to be replaced unless it is broken, but it will need to be cleaned several times a year in order to keep the bulb effective in delivering a high UV dose.


    What is Ultraviolet?

    An important matter to realize is that Ultra Violet is not a single entity, but is a wide band of wavelengths. The chief natural source of UV is the sun. In fact, about 9% of all energy emitted by the sun is UV. Most of which is in the region between 300-400 nm. Artificial sources of UV include incandescent, gas discharge, low-pressure mercury, medium pressure mercury, metal halide, electrodeless and xenon lamps.