What scientific facts support the re-opening the Navy ʻAiea-Hālawa Shaft (NAHS)?

Total petroleum hydrocarbons (TPH) were investigated by DOH in 2024 and detected no petroleum fuel contaminants or metabolites at NAHS utilizing advanced forensic investigative techniques. View the report: Joint Base Pearl Harbor-Hickam Drinking Water Characterization (pdf).

Pilot testing of the NAHS drinking water treatment system demonstrated it effectively reduced PFAS levels below proposed MCLs. The treatment technology also effectively treats dissolved petroleum, although the system’s performance in treating petroleum has not been directly demonstrated. On-going performance monitoring will be conducted to demonstrate that water quality meets all applicable standards.