Bought this item several years ago to replace a competitor's "attach to faucet" filter.  Saw TV advertisement about all of the filtration stages in ZeroWater that results in a "0" result.  Love that the tester is included, so that I could monitor when to change the filter!  Filter all drinking water, cooking water, water for pets, etc. through this pitcher with the replaceable filter.  Only reason that I didn't give 5 stars, I have the older version of this pitcher that leaks a bit when poured.