GSI Water Solutions, Inc. Email Format

Environmental ServicesOregon, United States51-200 Employees

GSI Water Solutions, Inc. is a specialized groundwater, environmental, and water resources consulting firm. It supports clients in safeguarding shared water resources through practical, science-based approaches. The company is based in Portland, Oregon, and was founded in 2000 by three former colleagues who left a larger consulting firm. It operates as an employee-owned S-corporation with five offices across two states.

Since its founding, the firm has served more than 300 clients across public and private sectors, including city governments and international companies. Its expertise spans hydrogeology, hydrology, remedial engineering, water resources, and environmental science, complemented by in-house capabilities in GIS, graphics, technical writing, editing, and document production.

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