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I might suggest that on smaller scales, the distiller option might be cheaper and provide a better solution to, say, charcoal filtering? For example, I bought my 1-gallon distiller (on super-sale) for about the cost of 3 Pur charcoal filters. Granted, the power usage of the distiller is an additional cost, but I wouldn't think it was significant? Of course, $50 or $100 can buy a lot of distilled water at the local mega-mart, too!