A daily waterline routine is necessary for the safety and well-being of your patients. Care needs to be taken as if you were going to be the one sitting and getting treatment in the chair. In my many years of clinical dental hygiene, I’ve seen a lack of consistency and care with cleaning and flushing waterlines. Sometimes, no one knows that a waterline should be flushed. Bacterial colonies will form in waterlines overnight. When you choose to become a dental health care provider, you oath to do no harm.