When a water filter (e.g. Brita filter) is past its expiration date, is it just not filtering very well anymore, or is it actively making the water worse? - Quora
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Amazon.com: Brita Metro Water Filter Pitcher, BPA-Free Water Pitcher, Replaces 1,800 Plastic Water Bottles a Year, Lasts Two Months or 40 Gallons, Includes 1 Filter, Kitchen Accessories, Small - 6-Cup Capacity: Home
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How long does a Brita pitcher filter last and how can you tell if it has expired? - Quora
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