Pure Blue H2O system is really good. There is too much manganese in our water, which stains everything it touches. The unfiltered water in my dog's bowl becomes cloudy and stinks after a day. Filtered with the Pure Blue system, it is clean and pleasant even after a day or more. A reverse osmosis filter is quite expensive, but you can easily spend the same money or more on a Brita or other less practical filter. Other replacement filters are relatively inexpensive and were well packaged by Revain and dispatched within the usual 2 day Prime window. All is well!
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