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About GSI Environmental Services

Founded in 1988, Groundwater Services International, Inc. was initially created to provide rapid response environmental and remediation services overseas. While continuing to offer broad geographic coverage, GSI now focuses its attention on the mid-Atlantic and New England regions of the U.S. providing cost effective environmental solutions for clients ranging in size from local service stations to Fortune 500 companies. Whether you have multiple facilities or a single location, GSI can assist you in managing your environmental needs from our strategically located offices in Harrisburg; Philadelphia, Pennsylvania and Lexington, Virginia.

We know that our continued success dependends on the continuing success of every client we work with. 

Contact us at 717-691-9799 or get in touch with us online.

"Groundwater Services, Inc. has been our “go-to” team for Phase I work for all of our real estate development projects. Having a firm like them that understands the importance of high pressure deadlines and complex grant requirements has been invaluable. Their communication, competence, and timeliness have been outstanding every time. We couldn’t be happier with their services."

Dave Butcher, President & Partner, WCI Services