I'm looking for a 5 gallon metal can (aluminum, galvanized, etc) to store drinking water. Old milk cans will be just fine. Is there a store which sells these kind of things? I live in Irvine.
Homebrewers typically use 5g Stainless Steel Cornelius kegs to store beer in. A lot of homebrew stores carry them, they are also known as used Pepsi or Coke kegs. The kegs would have to be pressurized for storing water.