I swear that I get nothing from these people by telling you this, but I was just reminded this week of how awesomely inexpensive my whole house water filter is. This part cost $100.
And this part (that filters a 100,000 gallons!!!) did too.
I hear that we absorb 2/3 of the chlorine in our bodies in the shower. But I really got my whole house filter because it makes your hair nice.