EPA and Tucson Airport Sign Agreement to Protect Major Drinking Water Source for Tucson

EPA and Tucson Airport Sign Agreement to Protect Major Drinking Water Source for Tucson

September 25, 2024

PFAS chemicals, often referred to as forever chemicals, originating from the Tucson International Airport Area (TIAA) Superfund Site are threatening the water quality of the drinking water system managed by Tucson Water (the City of Tucson's water department). The agreement being announced today will help ensure the protection of the aquifer and address groundwater contamination.

"It is essential that Tucson residents can continue to rely on groundwater as a safe source for drinking water," said EPA Pacific Southwest Regional Administrator Martha Guzman. "This agreement demonstrates the Tucson Airport Authority's commitment to share responsibility for protecting public health, and our recognition that such a commitment must be backed up by action."

"ADEQ appreciates Tucson Airport Authority's cooperation, which is crucial for solving the complex problem of PFAS contamination in Tucson's drinking water aquifer," said ADEQ Deputy Director Karen Peters. "While no Tucsonans are drinking this contaminated water, it is imperative that responsible parties contribute to both containing and treating the contamination quickly, so that all the City of Tucson's groundwater resources can be available for use as drinking water. We look forward to other liable parties also contributing to this effort to protect Tucson's water by entering a similar settlement soon. ADEQ will continue to work hand in hand with EPA and the community to protect Tucson's drinking water supplies today and for generations to come."

The agreement, known as an Administrative Settlement Agreement and Order on Consent, requires Tucson Airport Authority to determine the nature and extent of PFAS contamination that the Authority is responsible for at the TIAA site, and whether cleanup action at or around the airport property is needed. If so, the Authority must evaluate cleanup options to prevent, mitigate, and respond to the release or threatened release of PFAS at or from airport property. This agreement further motivates Tucson Airport Authority to cooperate with others who are not parties to this agreement, such as Tucson Water and the Air Force, to prevent and mitigate impacts from PFAS.

The agreement between EPA and Tucson Airport Authority, under sections 104, 106, and 122 of the Comprehensive Emergency Response, Compensation and Liability Act, also known as the Superfund Law, is a testament to the government's commitment to addressing PFAS contamination. The EPA will not just be a signatory but will actively oversee the work implemented because of the agreement, ensuring that the public's health and the environment are protected.

Mike Montgomery, Director of the EPA Pacific Southwest Region's Superfund and Emergency Management Division, signed the agreement on September 20, 2024.

Scientific studies have unequivocally shown that exposure, even at low levels, to certain PFAS chemicals can have serious health implications. These include adverse effects on the immune system, cardiovascular systems, and human development in children. Furthermore, studies have linked oral exposure to adverse health effects on the liver, the kidneys, and the immune system, as well as cancer. Following oral exposure, adverse health effects have been found on the thyroid, reproductive organs, and tissues, and developing fetuses. It is crucial that the public is aware of these potential risks, as they underscore the seriousness of the situation.

For more information visit EPA's Tucson International Airport Areawebpage.

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