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Legionella Investigation and Testing

Eagle Industrial Hygiene Associates, Inc. can assist with evaluating your facility for the presence of Legionella bacteria, the microbe responsible for Legionellosis (Legionnaires' Disease and Pontiac Fever).​

ASHRAE (the American Society of Heating, Refrigerating, and Air-Conditioning Engineers) ASHRAE Standard 188, Legionellosis: Risk Management for Building Water Systems, indentifies the following building-related risk factors associated with Legionellosis:

  • multiple rooms supplied by a centralized hot water heater

  • health care facility

  • immunocompromised occupants

  • more than 10 stories

  • whirlpools and/or spas

  • aerosol generating water features or devices such as fountains, evaporative condensers, misters, and/or air washers

The first step in complying with the provisions of ASHRAE Standard 188 is to survey your facility and determine if it meets any of the above-listed risk factors.  If so, you should develp and implement a program to manage the risk of building-related Legionellosis.  The program incorporates the following seven elements:

  • ​conduct a hazard analysis

  • determind the control locations

  • establish control limits for each control location

  • setup a system to monitor the control locations

  • determine the corrective action to be taken when monitoring indicates that a particular control location is not being controlled

  • establish verification procedures to confirm the effectivenss of the risk-management program

  • document and maintain records of all procedures and actions

Eagle Industrial Hygiene Associates, Inc. provides the services necessary to comply with ASHRA Standard 188, and can assist in investigations of Legionellosis outbreaks.  Legionella investigations and testing are conducted by a Certified Industrial Hygienist (CIH), experienced in the characterization and remedation of Legionella in building water systems.


Samples are analyzed by an AIHA LAP/ISO 17025-accredited laboratory that participates in the ELITE proficiency testing program for Legionella bacteria.


CONTACT: Don Schill (CIH 1992-2014) at​ or 267-280-2824.

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