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Ultra Violet Disinfection : Uses

Scientifically it has been established that ultra violet radiation has disinfection properties that inactivate bacteria, viruses and some other microorganisms. Ultra Violet does nothing for cysts and worms. It does not effectively treat Giardia lamblia or Cryptosporidium cysts. These need to be removed from water by the process of filtration.

Another few cases in which the process of ultra violet for disinfection is not recommended is if the untreated water contains very high levels of coliform (this is the indicator organism that is the basis for bacteriological water tests), or if there is substantial color or turbidity (cloudiness) in the water. This is because for the required effectiveness, the light intensity of ultra must reaches the organism in question. Therefore, there should be nothing present in the water that would shields and protect the organism from radiation.

When considering for household usage, ultra violet treatment offers a great option especially if it is being used as a second stage for chlorinated water from a public supply. This is especially applicable when the home has a treatment device like an activated carbon filter which removes chlorine and thus allows bacterial growth. These are the cases where ultra violet would provide a final disinfection of the water supply and make it absolutely pure for consumption.