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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.

When you hire GSI you will get knowledgeable experts working in a courteous, efficient and communicative manner. The positive testimonials on our site attest to how focused we are on making sure our clients get what they need and deserve.

We know that our success is dependent upon the continuing success of each and every client we work with, and we do every project knowing that our decades-long reputation as an efficient and reliable environmental consulting firm is always on the line.

We would be happy to provide additional information about GSI and to learn about your business's unique environmental challenges. Please give us a call today 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