PFAS Detected Above MCLs in Oahu Drinking Water Wells
The Board of Water Supply (BWS) on Oahu reported PFAS contamination above the 4 ng/L MCL in several drinking water wells. Samples from May 2026 showed PFOS at 5.0 ng/L in Kaamilo Wells. Additionally, the Navy Aiea-Halawa Shaft registered PFOA at 5.09 ng/L and PFOS at 6.78 ng/L in June 2024. These findings prompted a formal request to expand the Red Hill monitoring well network.
- Location
- Oahu, Hawaii
- Country
- 🇺🇸 USA
- Start
- 01/06/2024, 02:00
- End
- 25/07/2026, 05:15
- Event type
- Chemical contamination, Limit exceeded
- Status
- Lifted
- Region
- Hawaii
- Last updated
Timeline
- · Alert first recorded
- · Start according to source
- · Automatically marked inactive
- · End according to source
- · Record last updated
Automatically closed
This advisory was automatically marked as resolved after 21 days without new official information. No official all-clear was issued. Please check with your local water utility for the current status.
What to do now
- 1Do not drink tap water, boiling does not remove chemicals.
- 2Use bottled water or verified alternative supply.
- 3Activated carbon or reverse osmosis filters can help, not every filter is suitable.
- 4Follow official guidance on showering and washing.
Sources
This summary was generated automatically. For binding information consult the linked source.
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Reverse osmosis BE WA3: against PFAS, pesticides and heavy metals
Cuts chemical loads such as PFAS, nitrate, lead and pesticides by up to 99 percent. Boiling does not help here.
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