As a native New Yorker, I was raised on some of the best tap water in the United States. I didn’t start using a water filter until I moved to Boston in my early 20s, at which point I realized I’d become a bit of a water snob. Even after moving back to New York I kept up the habit with a faucet filter, just to make sure my tap water tastes the way I like. But after five years, my old filter was in need of replacement, so I wanted to see what other (better?