PUR FM-9100 3 Stage Horizontal Faucet Mount with Filter, Stainless Steel

Went through several of these before I learned my lesson. The casing after 3 to 4 months crack and water begins squirting all over the place. Though the filtrated water was good I just can't afford to continually replace units every 3 months.

As many other reviewers state - the thing leaks upon installation.
If you want a faucet filter, get one under the cabinet or a whole house.
Another option is the Brita, which is what we did after this leaked.
I even got the stainless one, which is just the cover - it's all plastic inside and basically junk.

We've used 3 of these and each and every one of them leaked like hell after a couple of months. At first I just thought we got unlucky, but after three what can I say?

This was a replacement for an earlier instance of the same filter that we previously owned. Works great, but it started falling apart after a little over a year.

This is the 3rd pur faucet mounted water filter we have had. It lasts about a year before it needs replacing because of leaks. I am trying to not turn the water on so much with this one to see if it is high water pressure that makes the gasket deteriorate so fast. Despite the lack of longevity with these units, I keep buying them because they really work. Tap water tastes great when filtered this way. The actual filters last a couple of months depending on how much you filter the water. We only filter it for drinking water and for coffee french press. It is the gasket for unfiltered water that goes; no leaks for the actual filtering part. All in all it does what it's supposed to do although it would be nice if the gaskets could be replaced without buying the whole unit every time.