Nearly five years after the U.S. Navy shut down its ʻAiea Hālawa Shaft over petroleum contamination fears tied to the Red Hill fuel disaster, state regulators have conditionally approved bringing the well back online as a drinking water source for Joint Base Pearl Harbor-Hickam. The approval addresses a vulnerability that has quietly persisted since December 2021: roughly 93,000 military and civilian users on the Joint Base system have depended entirely on a single active well, the Waiawa Shaft, located about 6.2 miles from Red Hill.
The Hawaiʻi Department of Health’s approval, first reported by Maui Now, allows the Navy to reactivate the ʻAiea Hālawa Shaft as a supplemental water source intended to enhance system reliability. Regulators had raised concerns about the Navy’s previous reliance on that single-source Waiawa well, and the newly approved shaft is located roughly two miles from the Red Hill Bulk Fuel Storage Facility. A geologic barrier situated in the Hālawa Stream valley separates the Red Hill site from the ʻAiea Hālawa Shaft, according to Maui Now’s reporting.
It is important to keep two similarly named wells straight. The Navy’s ʻAiea Hālawa Shaft is a distinct well from both the Navy’s Red Hill Shaft and the Honolulu Board of Water Supply’s much larger civilian Hālawa Shaft. That municipal well, which the Board of Water Supply shut down separately in December 2021 to protect metropolitan drinking water, removed roughly 10 to 17.5 million gallons a day, about 20% of Honolulu’s water supply, from service and remains offline, per Fitch Ratings.
How the Approval Process Unfolded
The regulatory groundwork for this moment was laid in a February 7, 2025 revised conditional approval letter from the Hawaiʻi Department of Health, which spelled out 12 specific technical and environmental requirements the Navy had to meet, according to the U.S. Environmental Protection Agency. Under the Safe Drinking Water Act, state health authorities retain strict oversight over military public water systems, and that oversight shaped nearly every condition attached to the shaft’s return…