Detroit

Legionella Bacteria Found in Oakland County Courthouse, Immediate Remediation Underway

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Published on December 27, 2025
Legionella Bacteria Found in Oakland County Courthouse, Immediate Remediation UnderwaySource: Wikipedia/WeaponizingArchitecture, CC BY 4.0, via Wikimedia Commons

Legionella bacteria have been found at the Oakland County Courthouse, leading county officials to take steps to protect public health. Testing of 11 locations within the courthouse revealed that four sites were positive for the bacteria. Oakland County Health Officer Kate Guzman stated that immediate measures are being taken to address the contamination and maintain a safe environment for employees and visitors, according to a statement obtained by CBS News.

The fixtures found to contain the bacteria include the men’s bathrooms on the first and third floors, as well as two sinks in the cafeteria. Filters are being installed on these fixtures and others connected to the same water loop, and the water system is being flushed to remove the bacteria. Oakland County stated that no additional cases of Legionnaires’ disease have been linked to the courthouse, though concerns arose after a non-county employee who visited the courthouse tested positive for the disease last April.

The detection of Legionella does not necessarily indicate a health risk. Following recent test results, the county has implemented additional remediation measures based on recommendations from a water consultant. Periodic testing will continue to ensure compliance with state guidelines, as reported by ClickOnDetroit.

In the meantime, any water fixtures that cannot be immediately serviced have been temporarily closed to prevent potential exposure. Legionella bacteria, which naturally occur in both man-made and natural water systems, can spread through water droplets but are not transmitted from person to person. Symptoms may include cough, fever, headache, muscle aches, and shortness of breath. Oakland County has made the Oakland Connects Helpline available to the public for questions at 800-848-5533.