Dental unit waterlines are a hidden but critical infection control risk. Like oral biofilm, DUWL biofilm is stubborn—and when left unchecked, it contaminates aerosols and endangers both patients and providers. This practical, engaging course demystifies waterline compliance, covering why it matters, how to test effectively, and what steps ensure ongoing safety. Learn how to "pass the test" (shock, test, treat, maintain) and explore products that simplify compliance.