What issue arises from toilet flushes causing rapid water flow?

Toilet flushes create rapid water flow, which can lead to siphonage. Siphonage occurs when the rapid removal of water from the toilet can create a vacuum effect in the plumbing system. This vacuum draws water out of the traps in the plumbing fixtures, potentially allowing sewer gases to enter the living space and compromising sanitation. Essentially, if the water flows too quickly during a flush, it can disrupt the water seal in the trap that keeps harmful gases from escaping into the bathroom or home.

In systems designed for proper waste removal, maintaining an adequate water level in the traps is crucial for preventing these issues. Siphonage becomes a concern particularly when the plumbing is not adequately vented or if there is a blockage, which can exacerbate the vacuum effect created by the flush. Understanding siphonage is key in designing systems that can handle rapid flows without compromising safety or hygiene.