I didn't know what water towers were for, however I did know that they were called "water towers." I guessed that they collected rain water. When it would rain, a door on the top would automatically open and allow the rain water through. The water would be filtered, and sent through underground pipes to the local water company's headquarters, also underground.
A childhood belief about water towers

others believed things like this
- ***I used to believe that water towers was a place that someone lived and they controlled the water.— C H R I S T E N
- I used to think water towers were where everyone's uh...waste...went to from the toilets.— Stephanie
- I used to believe that water towers were giant metal spiders. Don't ask. — Goatgirl
- I used to think that water towers were giant golf tees.— adam
- I used to see water towers and think that Aladdin lived in them. I don't have a clue why.— Jessy
- I used to believe that water towers were detention centres for naughty dolphins— Ian