This might not work as well as they'd think. We did an experiment in my primary school physics class: hook a fluid pressure sensor up to the class faucet and s

This might not work as well as they'd think. We did an experiment in my primary school physics class: hook a fluid pressure sensor up to the class faucet and start graphing the water pressure. We then sent a team to the restroom to flush a toilet. Then two at the same time. Then four. Around eight, the combined flush lowered the water pressure so much that many of them simply refused to work.