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Accredited Labs

List of Accredited Laboratories

The following files contain a list of laboratories accredited by the Illinois Environmental Laboratory Accreditation Program (IL ELAP) and the Illinois Department of Public Health (IDPH). The IL ELAP accredits laboratories for chemical analysis, and the IDPH accredits laboratories for microbiological analysis.

This list is updated frequently and we try to make sure the file maintained on this site stays current. However, we encourage you to verify the accreditation status of a laboratory by reviewing the laboratory's certificate of approval issued by the IL ELAP or by contacting one of the accreditation staff to verify the status of a laboratory.