I have been using my PUR filter for a week now. This PUR filter was tricky in the beginning. At first I had a hard time putting the filter on the sink. Then after I placed the filter on the sink, I had let the cold water run for 5 minutes. When I switched the PUR from unfiltered to filtered the water starts to run slower. After about two days it started to run normal. I actually love using my PUR system. The water tastes fresh. It tastes about equally to the bottled water that I buy. So now I can save money by using my PUR system. I'm in love with this system.