What Is The Black Stuff In My Toilet Bowl?
The black stuff in your toilet bowl could be caused by a buildup of minerals, mold, or bacteria. Hard water can leave behind iron and other minerals that may turn black over time. Mold can grow in areas that are constantly damp, like the inside of a toilet bowl. Bacteria can also thrive in moist environments and produce black or brown stains. Regular cleaning of your toilet bowl with a bleach-based cleaner or homemade solution can help prevent the buildup of black residue.