UV systems leave no taste, odour or chemical residue in the water; however, they have no residual effect, so they are used at the end of the storage and distribution line or on a recirculation loop. For effectiveness, the water must be clear (UV transmittance > 85%); the lamp is replaced annually and the quartz sleeve is cleaned or replaced periodically. The typical dose is 40 mJ/cm².
Technical glossary· Disinfection
UV Disinfection
Short definitionA method that disinfects without chemicals by disrupting the DNA of bacteria, viruses and protozoa with ultraviolet light at a wavelength of 254 nm.
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