: The cylindrical paperboard core is not meant to be flushed and can easily jam in the P-trap, the sharp turn in the toilet pipe where clogs most often occur.
: Even if you double the normal amount of paper, it usually flushes fine; however, 1/3 to a full roll can lead to a severe blockage. toilet paper roll in toilet
Before you think about pipes, consider what is actually in that toilet water. Even in a clean-looking bowl, the water contains bacteria from urine and feces, including E. coli and other pathogens. Submerging a porous, fibrous object like a toilet paper roll turns it into a breeding ground. : The cylindrical paperboard core is not meant