system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do water towers work?
gpt
When you pump water from point A to point B, sometimes everyone wants more water than a pump can handle. Say everyone flushes during a commercial break during the Superbowl. The water tower holds a bunch of water high up in the air so when there a drop in water pressure, gravity pulls water down and keeps the pressure up so everyone gets water.