I did a ton of research on NSF 58 certified water filters before choosing Watts. There is no doubt that this is an excellent product, on the easy side to install as far as filters go. In my previous house, I had a Culligan filter which produced a slightly higher pressure which I was accustomed to. I've had to get used to the slightly slower flow. But the quality of this filter I believe is better, so it's worth it.
Reviewed by: Leigh from Palm Desert, CA.