Selenium detected in Maui water system

Routine water quality testing has identified trace levels of selenium in the Wailuku water system, which serves the Maalaea, Kihei, Wailea, and Makena areas of Maui County.

Testing conducted on May 27 and June 18 revealed selenium levels ranging from 2.4 to 6.5 micrograms per liter. Health officials and the Maui Department of Water Supply (DWS) stated that these levels are well below the maximum contaminant level of 50 micrograms per liter established by the U.S. Environmental Protection Agency and the Hawaii Department of Health. Consequently, officials noted that the detection is unlikely to pose a public health risk.

Selenium is a naturally occurring mineral found in rocks and soil, and its presence in drinking water can result from the natural erosion of mineral deposits. The DWS has notified the Hawaii Department of Health of the findings as required by state law and will continue monitoring the system to ensure ongoing compliance with federal and state drinking water standards.