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Because the water tank has to be in the air so that the water can be pumped to it's location easier and faster. With out the tank being built on a tower or hill the water will take a long time to pump and get to it's location.

Hope that helps:)

This is 100% true I work for a company that does this part time and I am also a cop. Click it or ticket?

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12y ago
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17y ago

Usually at the highest point in the area.

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Q: Why do cities have water towers?
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