What scientific facts support the re-opening the Navy ʻAiea Halawa 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.
Related Questions
- Why is the ʻAiea-Hālawa GAC-IX filter being proposed for removal after 9 quarters? What standards will be used to determine acceptable PFAS levels?
- Has the Navy’s risk and resiliency assessment (after findings in both 2022 and 2024) been revised and reviewed? Is the assessment available to the public?
- Have water system operator SOPs been developed and submitted/approved in order to protect water system consumers as required by the EPA?
- Is it safe to restart a drinking water shaft in this area when scientists are still working to understand groundwater flow under Red Hill?
- Why is the Navy continuing to flush drinking water lines?
- When will the Navy complete the 2023 ACO requirement to inspect, maintain, and clean the Join Base Pearl Harbor-Hickam public water system water storage tanks?