While all test results for contamination at the Navy drinking water shaft have come back well within safe drinking water standards and results from the Halawa shaft have shown no jet fuel related contaminants, the Navy, the Environmental Protection Administration, and the Hawaii Department of Health conducted studies to evaluate groundwater conditions and any potential impacts to groundwater resources in the area. Results taken in and around Tank 5 indicated a spike in levels of hydrocarbons in soil vapor and groundwater. Drinking water monitoring results confirmed compliance with federal and state safety standards for drinking water both before and after the January 2014 release.