Everytime I go to New York City, I am amazed at how good the water tastes, just out of the old tap.

Here in Southern California, it is habit to walk around with a bottle of Fiji or whatever. The tap water here is so bad it's pretty much undrinkable without filtration. Tap water is strictly for washing.

My wife's mom and our son, first time visitors, were very pleasantly surprised. I've lived in areas where you would assume the water would be great, like the Olympic Peninsula and the Rockies, and it was not as good as NYC.

Anyone know, what is the deal with it? How come it tastes so good?