I am sure these filters will work as described. What is not said is that I think (just guessing) that a large amount of plastic dust is left behind in the manufacturing process and so has found its way through my entire home water system and into my kitchen with evidence in my clean water. Glasses, dog bowls, etc. if they are filled with tap water. It looks like air bubbles but is actually a white cloud of molten polypropylene less than 5 microns in size. I removed the filter after a day of use and my water is back to normal. I hope I can return the 3 remaining units.
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