FLAGSTAFF— Per Environmental Protection Agency (EPA) and Arizona Department of Environmental Quality (ADEQ) requirements, the City has been conducting an inventory of the location and material type of all city water service lines. City customers with service lines of unknown material received a mailed notice this week from the City of Flagstaff with steps to help determine the material in the water service line. A map hosted by ADEQ detailing the material of known service lines is now also available to view on 120wateraudit.com