The primary culprit in most blocked urinals is "uric scale" or "uric salt." When urine reacts with the minerals in hard water, it creates a solid, calcified deposit that clings to the inside of the pipes. Over time, these deposits narrow the diameter of the pipe until water can no longer flow through.
This might sound dramatic, but consider the user experience. A man enters a restroom needing relief. He sees a urinal filled to the brim with cloudy, stagnant water. His choices: blocked urinal
If you are reporting this to a janitor or facilities manager, the "proper piece" of information usually includes the location and the specific issue. The primary culprit in most blocked urinals is