A special lamp generates the radiation that creates UV light by striking an electric arc through low-pressure mercury vapor. This lamp emits a broad spectrum of radiation with intense peaks at UV wavelengths of 253.7 nanometers (nm) which research has shown is the optimum UV wavelength range to destroy bacteria. For more information on how UV works click here. UV disinfection can remove the threat to health from waterborne Pathogens without the creation of disinfection by products that can be generated from drinking water chlorination. From the common bacteria, E-Coli through the Cryptosporidium Oocysts to Adenovirus, UV disinfection is capable of providing effective treatment to ensure inactivation of these pathogens and ensure drinking water is safe.