I had a bad experience with leaking Aquasana filters for two years. They aren't for sale and don't have a parts list so I couldn't replace the o-rings let alone a mess. Waterdrop 15UA-UF 0.01 micron tastes better than the Aquasana triple filtration system and the only o-rings I've seen have been replaced with a new filter. Until I test the water I can't tell if it actually filters. I installed this unit in my basement over a deep sink and routed a line to a separate faucet in the kitchen. I doubt I'll have leaks with the Waterdrop filter, but after an Aquasana leak I don't risk it.
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