The tap water in my current house is perfectly fine, so why should I even have a filter? My previous house the water wasn't perfectly fine (I forget what was in it, but the lab failed it) so I had a separate filter rated to take out the bad things in my water - again why replace the fridge filter that wasn't as good.
Either replace the filters or use the bypass cartridge. You don't want to leave a filter in forever so you don't get bacteria growing in your drinking water.