Your dental unit waterlines are very likely contaminated. Dental unit waterline problems result mainly from how water is used in the operatory, and the design of dental delivery units.
Years ago, delivery system manufacturers introduced independent bottle systems, primarily to mitigate issues with municipal source water. While filling bottles with purified water certainly helps by removing certain contaminants and dissolved solids commonly present in city water, using bottle systems does not solve the other issues that contribute to waterline contamination.
The fact of the matter is that even the ideal-quality input water can quickly become contaminated in dental delivery systems. That’s why it’s extremely important to follow a three-pronged approach to proper dental waterline care.
Dental practitioners understand that a comprehensive approach to good oral health involves regular brushing and flossing, periodic in-office cleanings and exams, and a healthy diet. In much the same way, a three-pronged approach to waterline “health” consisting of following basic protocols daily, testing contamination periodically, and using antimicrobial agents regularly is best for preventing, monitoring, and controlling microbial growth comprehensively.