Once water enters the DUWLs, what happens to the CFU count?

When water enters the Dental Unit Water Lines (DUWLs), the colony-forming unit (CFU) count tends to increase significantly. This rise is primarily due to the introduction of bacteria that may be present in the water supply. Dental units are complex systems that can harbor biofilm, and when water flows through these lines, it creates an environment that supports bacterial growth.

The stagnant nature of water in the DUWLs, especially when they are not in regular use, contributes to the development of these biofilms. As bacteria proliferate, the overall CFU count can reach dangerously high levels, creating potential health risks for patients and dental staff. Maintaining proper protocols for cleaning and monitoring the water quality in DUWLs is essential to minimize bacterial contamination and ensure safety during dental procedures.