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How far has contamination spread in the aquifer? Is it moving toward our drinking water?

Return to: Frequently Asked Questions About Red Hill

Groundwater contamination has been consistently detected in the Red Hill tank area. Contaminants believed to be associated with the Red Hill facility have been detected less consistently at outlying groundwater monitoring wells located about ¼ to ½ mile from the facility. Additional monitoring wells are planned further away from the Red Hill facility to determine whether contaminants are present beyond the existing monitoring well network.

Groundwater Testing Results

Screen capture of Red Hill Groundwater Testing Application

EPA is pleased to present an application developed to provide you with a simple way to view up-to date information about groundwater quality around the Red Hill Bulk Fuel Storage Facility in Hawaiʻi. Learn more at the Groundwater Results Application.

Related Questions

  • How does EPA know that Polycyclic Aromatic Hydrocarbon (PAH) detections at ʻAiea Wells are not related to any/all historic Red Hill fuel spills?

Red Hill

  • About Red Hill
    • About the Fuel Releases
    • Frequently Asked Questions
  • Closure of the Red Hill Bulk Fuel Storage Facility
    • Defueling Plan
    • Closure Plan
  • Drinking Water Quality
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    • Groundwater Results Application
    • 2015 Administrative Order
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      • Community Representation Initiative
    • 2015 Administrative Order
      • Parties to the Agreement
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      • - Fuel Releases
      • - Groundwater Flow Patterns
      • - Groundwater Monitoring
      • Tank Infrastructure Improvements
      • - Corrosion and Metal Fatigue Practices
      • - Release Detection
      • - Risk and Vulnerability Assessment
      • - Tank Inspection, Repair and Maintenance
      • - Tank Upgrade Alternatives
      • Additional Documents
      • Remediation Roundtable
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Contact Us About the Red Hill Bulk Fuel Storage Facility
Contact Us About the Red Hill Bulk Fuel Storage Facility to ask a question, provide feedback, or report a problem.
Last updated on January 28, 2026
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