Why are H2O brand filters better than other KDF based filters?
KDF is a revolutionary medium. It not only removes or reduces heavy metals, such as lead, creates a bacteriostatic environment so that bacteria growth is restricted, it also pretreats the water by removing free chlorine, thus allowing the carbon bed to work exclusively on chemical removal such as pesticides, solvents, THM’s, VOC’s and MTBE. The problem is, because it is so good, it is also very expensive. This is why many companies advertise that they use KDF but in fact only use a miniscule amount. It is important to know the amount of KDF used, as anything less than a ratio of KDF to carbon of 50/50 by weight will simply not work.