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GSI Water Solutions provides creative, effective answers to the groundwater, environmental, and water resources problems facing municipalities, water districts, farmers, and industry.

Our staff of hydrogeologists, hydrologists, geologists, engineers, water resources specialists, and environmental scientists has strong technical abilities and many years of experience in clearly communicating the often complex issues confronting our clients.

GSI is a privately owned consulting firm, founded in 2000, serving clients in the Pacific Northwest, California, Asia, and Europe.




areas of expertise

  • Groundwater supply development
  • Well design
  • Aquifer storage and recovery (ASR)
  • Water rights and permitting
  • Collector wells and infiltration galleries
  • Groundwater and soil contamination investigation and cleanup
  • Groundwater and surface water interconnection
  • Groundwater quality assessment
  • Land application and natural treatment program support
  • Remedial action strategic planning
  • Well rehabilitation
  • Groundwater modeling
  • Geothermal modeling
  • Municipal water supply protection