I've become somewhat of a water snob since I got into this hobby but I'm not very technical when it comes to picking bottled water. Basically I've tried everything at the nearby grocery stores, etc. that I've seen in gallon jugs. Keeping costs in mind, the walmart gallon jugs run about 70? cents here versus the Weis grocery store where they are 67 cents. Already as an accountant I see major cost savings by going to the WE IS. Also, when it comes down to it the WE IS water tastes MUCH better to me the the Walmart water. I guess I figure as far as bottled water goes, if it tastes good to me who are the fish to complain...