In Texas, the pack of water is usually 2-3 dollars (at WALMART, Kroger, Albertson's, Central Market, etc), for a water bottle at WALMART (like Dasani or Aquafina) is one dollar and fifty cents. Its cheaper if you buy it at CVS/Pharmacy or Family Dollar.
Mineral Water (like Voss or SmartWater) is like 2-8 dollars at Sprout's.
EDIT: So obviously the clean water is not free, but the City water (in Dallas and Fort Worth) from the sink is definitely clean, not in Saginaw though.
So sometimes water is free.