How to Build a Water Rocket

Age Range: 7 and up

This rocket is propelled by the sudden release of pressurized air, so all the parts need to come together with tight seals to hold the pressure in until you’re ready to launch. PVC plumbing pipe won’t leak as long as you use the right kind of pipe cement and make sure to clean all the connections before gluing them.

A simple string-controlled trigger unlocks the pipe from the end of the bottle, releasing the pressure and sending the bottle into the sky.

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Helpful Info

Skill Builder: Gluing PVC Pipe

Ask This Old House: Ungluing PVC

Article: 10 Uses for PVC

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