Can a dishwasher be a source for Legionella?

We moved into our house a year ago. We haven’t used the dishwasher yet and I am concerned about contracting Legionnaires’ disease if we use it. Do you have any testing advice? Is there a cleaning technique that will work, or am I worrying too much?


Dishwashers do not transmit Legionella. There is some conjecture that homes with dishwashers are less likely to harbor Legionella in the drinking water, because the temperature of the hot water system required for dishwashers is not conducive to Legionella growth.