As mentioned, this doesn't last long. I have good city tap water, but after a month the flow becomes unbearably slow and I have to spend another $70. I'm deciding whether to put a fine filter in front of the 3rd stage to see if that helps extend life. .I wish Brondell would only sell the first stage separately like some other multi-stage systems. Then I could just replace the diesel particulate filter (which is the cheapest anyway) for about $10/month and replace the rest after 6 months. I doubt they will because they probably make good money off filters. Cheap system to buy, but expensive filter change.
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