What average bacteria count is associated with a standard toilet bowl per square inch?

Answer

3.2 million bacteria per square inch

A standard toilet bowl, including the settled water inside, averages approximately 3.2 million bacteria for every square inch of surface area. While this number is substantial, comparative studies show that a well-used kitchen sponge typically harbors exponentially more microbes, often leading to the counterintuitive conclusion that the sponge is significantly more contaminated than the toilet bowl it is often compared against.

What average bacteria count is associated with a standard toilet bowl per square inch?
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