Just found out Brita water filters are recyclable. I don't think the local pickup of recycled plastic will deal with it correctly, but Whole Foods has a program that takes all #5 items, including these.
Tap water used to be good enough for me, but after my water company sent a letter saying the water is actually exceeding recommended limits on a contaminant whose name I forget, I don't like drinking it. I think taste can be suggested and even if I don't taste something I'm imagining I do.
Brita filters apparently block this and other contaminants pretty well.