News Release

Haleakalā National Park Water Testing Finds Contaminant Levels Below State Action Limits

Date: May 13, 2026

Haleakalā National Park is sharing results from recent water quality testing that detected low levels of a man-made chemical called per-and polyfluoroalkyl substances (PFAS) in the park’s water system.

The levels detected were below the Hawai’i Department of Health action levels for drinking water.

Water samples collected within the summit district in November 2023 and January 2026 detected Perfluorobutanoic Acid (PFBA), part of a group of industrial chemicals sometimes found in water, soil, dust, and consumer products.

The chemical was detected at 7.5 parts per trillion and 5.2 parts per trillion. The Hawai’i Department of Health action level for this chemical is 15,000 parts per trillion.

The action levels are predetermined thresholds for contaminants or environmental conditions that trigger specific protective, regulatory, or corrective actions.

These types of chemicals are commonly found in products such as stain-resistant fabrics, food packaging, and carpets. PFBA, a breakdown product of other PFAS compounds, has been found in soil, crops, dust, and some water sources. 

Haleakalā National Park operates its own water system, which supplies water to park housing, restrooms, visitor centers, and other park facilities. The park will continue monitoring water quality and adhering to state testing guidelines to ensure the ongoing safety of the water system.