What would happen if everyone in the US flushed at the same time?
This is one of life’s little mysteries. We can only guess without a real word experiment. Some people hypothesize that our streets would be overrun with sewage from the drain system and our supply pipes would explode from the introduction of pressurize air into the system. Levine and Sons believes that any problems would be localized since each metropolitan area has its own water supply system. We also believe that most systems could handle extremely high usage and the main problem would be low pressure to refill each toilet resulting in a delay of a few minutes at most.