Professional Service Industries, Inc. (PSI) is a nationally recognized consulting engineering and testing firm providing integrated services in several disciplines, including geotechnical engineering, construction materials testing and engineering, facilities engineering and consulting, environmental consulting, asbestos management and industrial hygiene. PSI is a leader among the nation’s independent testing organizations and ranks among the largest consulting engineering firms in the country.

PSI has been providing business and industry with objective, accurate and useful information for more than 100 years. Today, we employ more than 2500 skilled personnel in 125 offices nationwide.