The big issue with UV is that we believe it's a good disinfectant, but there is not a lot of research in that area; there isn't a really good comfort level on what it actually disinfects as far as the microbial pathogens go. There are the basic ones we're comfortable with, but with the giardia and cryptosporidia there is a concern over contact time.
Le gros problème, en ce qui concerne les rayons UV, c'est que c'est sans doute une bonne méthode de désinfection, mais qu'il n'y a pas beaucoup de recherche qui a été faite à ce sujet-là.
