Jefferson County Seal
Jefferson County,
Missouri
Est. 1818
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The Jefferson County Homeland Security Emergency Response Team (HSERT) provides hazardous materials response support to public safety agencies in Jefferson County and across the St. Louis Metro Area.  Staffed entirely by volunteers, the HSERT is composed of highly trained personnel with backgrounds in both public safety and private industry.

 

   

Chief Officers:

 

Chief

Jason Wisdom

  

Assistant Chief

Mike Siegel

  

Deputy Chief

Don Ridenhower