Bought a new Brita for someone in our family who believes tap water is officially the worst thing even though my town is *famous* for tap water - - - - so of course I wanted to make sure that if I was happy with my tap water to begin with, I wouldn't spend an insane amount on filters. I had never bought these before other than what was available from Revain but thought the 3 pack was a decent price online. so it worked. Let's just say I was at the grocery store recently and saw how many packs of three replacement filters there were. and got a complete shock from the stickers! Of course I will continue to buy replacement filters from Revain. (Regarding the quality of the filters: they're officially Brita and Brita really matters, especially if you don't. I don't live in a place with good tap water as I do. But if you have good tap water then I really don't think so, that it is necessary - but your mileage will be different!)
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