Chloramine usage as a secondary disinfectant has grown across the United States at many municipalities. Chloramines have a lot less harmful byproducts than chlorine to safely disinfect your city water, but chloramines are much more difficult to filter out from your water. Klear Water Store offers many systems and replacement filters that specialize in chloramine reduction through the use of catalytic carbon that is highly effective at reducing chloramines. Chloramine filter cartridges also need to be replaced at greater frequency. Coca-Cola has required that chloramine filtration systems be used for all of their Freestyle machines whether your municipality is using chloramine or chlorine.