PFAS found in local school drinking water supply

The Alaska Department of Environmental Conservation (DEC) has detected Perfluoroalkyl Substances (PFAS) in groundwater near Cottonwood Creek Elementary School, prompting an investigation by local and state officials. The detection occurred in late March during routine sampling mandated by new EPA rules. The school district is coordinating with the DEC to take necessary protective actions, with parents and the community already notified.

The testing is part of a statewide initiative under an EPA Emerging Contaminants grant launched in early 2024 to monitor water quality.

PFAS are synthetic chemicals widely used for heat, water, and stain resistance in products like rain gear, electronics, and non-stick cookware. Historically, they have also been associated with Aqueous Film-Forming Foams (AFFF) used in firefighting, and while the State of Alaska restricted the use of AFFFs containing PFAS effective January 1, 2025, the Borough has not used or stored AFFF since 2017.

The discovery alone does not immediately establish the source or pathway of the contaminants, and the Mat-Su Borough is working with the DEC to investigate the situation further.

The Borough will begin sampling other areas across the Mat-Su Borough where PFAS may be present and will coordinate all testing with DEC. In conjunction with DEC, officials anticipate a public meeting(s) in any local area where PFAS is detected in groundwater. DEC and the Alaska Department of Health will be available to provide technical information and help answer questions at this meeting.