A childhood belief about water towers

While driving across the fine state of Minnesota with my mother and grand mother I caught site of a watertower that had sometype of funny face painted on it. About an hour later i noticed another water tower (mind you this was 70 miles down the road) that didnt have the face painted on it. When i pointed it out to my mom she told me "no nobody repainted it honey its a different watertower." I was sent into shock and utter amazement that Minnesota had not one but TWO water towers. I still remember telling my grandma that they must drink a LOT of water up here!!