Ultraviolet is considered the best available technology for swimming pool disinfection. Studies show that in chemical disinfection, 90% of the chemicals are used for oxidation, and 10% for sanitation. Ultraviolet does both.

How much chlorine do UV pool sanitizer use?

Higher than necessary residual chlorine levels can also contribute to disinfection byproducts. Levels of between 0.5 and 2ppm should be sufficient with a UV system.

Does UV light break down chlorine?

High intensity, broad-spectrum UV systems (also known as medium-pressure UV) reduce both free chlorine and combined chlorine compounds (chloramines) into easily removed byproducts. … The usual dose for removal of free chlorine is 15 to 30 times higher than the normal disinfection dose.