Ultraviolet light (UV) is a high-energy, low wavelength light that provides a non-chemical method to disinfect water. UV is considered a supplemental oxidizer and disinfectant since it does not create a disinfectant residual in the water. It must be used in conjunction with a disinfectant that provides a residual. UV can not be transported or stored. It must be generated on site for pool use.
UV acts as a disinfectant by killing or inactivating bacteria, viruses, and parasites. Unlike
chemical systems UV inactivates pathogens with high energy. If the intensity of light is high enough and the exposure is long enough, UV stops reproduction by damaging the DNA of the pathogens.
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