To produce powerful flushing for emptying bowl contents in a single flush, tankless toilets need a high-pressure water source. They use a flush valve (flushometer) that is attached to a plumbing supply line directly. The high-pressure flush eliminates duplicate flushing, which saves water and reduces maintenance by reducing the likelihood of blockages or backups. Tankless toilets flush louder than traditional toilets, but they refill faster and provide a cleaner bowl after flushing. They're employed in high-traffic areas (more than 30 flushes per day), such as public and institutional restrooms, and are also known as industrial or commercial toilets.