Does The Atomic Flush exist?

Question

you know the one that is you flush all the toilets in a neighborhood it will destroy the sewer system.

Answer 1

Nope. Sewer systems are designed for worst case, not average load. On the other hand, there is a story about the water presssure in NYC dropping every 15 minutes. It is called the "TV Flush" and coincides with the commercials.

Answer 2

Won't kill the system, but it can't be good for it.