Who We Are

Terra Testing, Inc. (TTI), located in Washington, Pennsylvania is a privately owned corporation, specializing in geotechnical (Test Boring & Exploratory Drilling) and environmental (Monitoring & Recovering Wells) drilling since 1972. A corporation since 1981, TTI has successfully completed thousands of projects for the private sector, governmental and industrial owners. The majority of our work is in Pennsylvania, Ohio, West Virginia and Virginia, although we have traveled...

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Terra Testing has a wide range of drilling equipment to serve the needs of our clients - From a wide range of tracked equipment capable of angle drilling and turning large diameter hollow stem augers to skid rigs that can be moved with dozers, on dolly wheels or...

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  • I just wanted to follow up after the field work and let you know that Bob and John worked very hard and efficiently to complete...  From Key Environmental Inc.

  • The level of service received from Terra Testing has been outstanding in regard to quality of work and attention to safety...  From URS Corporation

  • We would like to apprise you of the excellent work performed by your employees on our Molycorp project in Washington, PA...  From Malcolm Pirnie