The Hawaii Department of Health says trace levels of selenium have been detected for the first time in water samples collected from a system serving the Lahaina, Honokowai, and Napili areas on Maui.

The levels are below what’s allowed by the state and the U.S. Environmental Protection Agency in drinking water, DOH said in a news release, and are unlikely to pose a public health risk.

Selenium was detected in samples collected during routine water testing Sept. 29 and Oct. 23 within the County of Maui Department of Water Supply’s Lahaina Water System.

Maui County notified DOH of the initial detection via email on Nov. 5, as required by law, and the department issued the news release according to state law.

The detected selenium levels ranged from 6 to 7.4 micrograms per liter, which are

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