Product review (3 stars): Update: Terrible filter, but great customer service
Update: Within hours of my posting this review the first time, Jennifer from the Waterfall Filter Company contacted me by email after seeing it. She apologized for my having had a bad experience and agreed that the filter I received could have been a defective one. She also offered to send a replacement out right away. I was very impressed by this, so I probably would have taken her up on her offer if I hadn't already ordered a different filter. I've changed my rating from 1 to 3 stars because of the great customer service. And I'll probably give this filter another shot the next time I need to get a new one.

I'm not sure why others gave this filter such good reviews. Maybe the one I got was defective. But even after I let water run for twice as long as recommended after installation, the water still had lots of visible particles and it tasted terrible. The water from my year-old GE water filter is much better quality - very few visible particles (if any) and much better tasting. I re-installed the old filter and I'm returning this one. And I won't be buying another "compatible" filter...