PFAS detected in Haleakalā National Park water system

May 11, 2026

Read the full article (State of Hawaii Department of Health )

"PFAS (perfluoroalkyl and polyfluoroalkyl substances) have been detected in water samples collected at the Haleakalā Park Rain Shed Chlorinator of the Haleakalā National Park water system (Public Water System HI0000222), which serves areas of Haleakalā National Park on Maui.

The detection of PFAS at the Haleakalā Park Rain Shed Chlorinator was confirmed through multiple samples collected between Nov. 14, 2023, and March 31, 2026. Haleakalā National Park notified the Hawai‘i Department of Health (DOH) of the initial detection on May 1, 2026. The detected PFAS levels are listed below.

The concentrations of PFAS detected at the Haleakala Park Rain Shed Chlorinator of the Haleakala water system are not expected to pose significant public health risk."

Location:

• North AmericaUS
• North AmericaUSHawaii

Topics:

• ChemicalsPFAS
• Environment
• Wildlife
• ImpactDrinking water
• Affected community
• Health