Gov. Doug Ducey has asked the U.S. Department of Defense (DOD) to address groundwater contamination near military installations in Arizona. In an Apr. 27 letter to Secretary of Defense Lloyd Austin, Gov. Ducey requested DOD to identify and treat water in Arizona contaminated in the areas surrounding four DOD installations and to prevent additional human exposure to per-and polyfluoroalkyl substances (PFAS) from other DOD facilities in Arizona, which impact the groundwater. … These bases are located in the two most populous metropolitan areas in Arizona and each is surrounded by thousands of Arizonans who rely on clean groundwater for drinking water purposes.