Grades K–2 · Systems
How does a tall water tower help supply taps?
A water tower keeps water high above the ground, ready for people to use. A pump pushes water up into the big tank. Lifting water takes energy, just as lifting a full bucket does.
When a lower tap opens, water can flow from the tank through a pipe. Gravity pulls the water down. The water above helps push the water below along the filled pipe and out of the tap.
The upward arrow follows the pump’s filling pipe. The downward arrow follows water from the tank toward the tap.
When many taps open, the stored water helps meet the extra need. The tank level goes down as water leaves. A pump can fill it again.
The tower and pump do different jobs: the pump lifts water, and the high tank stores it. A tall tank helps a whole neighborhood share a supply. Some places use other water systems.
About this explanation
Starting knowledge: Recognize water flowing downhill and a tap opening or closing.
Sources
- U.S. Geological Survey — Water Q&A: How is water supplied to our homes?
- U.S. Geological Survey — Public Water Supply