We bought this filter for my parents who will only drink filtered water as their city water has a very strong chemical taste and smell. They were using a pitcher for all their drinking water so I thought that a faucet filter would be a nice upgrade for them. The installation was a little rough. It was difficult to get the threads on the faucet to line up and form a tight seal with the filter unit. Once everything was lined up, there were no leaks. The biggest drawback is that the flow of the filtered water is pretty slow. It takes several minutes to fill a coffeepot, but it's still faster than waiting for the water to drip through the pitcher. You can flip the switch to get unfiltered water which flows normally.