The most common cause is simply an amount of waste that exceeds the water's ability to move it. Low-flow toilets, while environmentally friendly, sometimes lack the necessary suction power to move a large mass. Additionally, harder, denser stool can create a "log jam" effect that traps air and prevents the siphoning action required for a flush. toilet clogged from poop
If the clog is stubborn, a plunger may not reach it. The most common cause is simply an amount
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