drinking water standards; pollutants

SB 1391 amends Arizona's environmental statute to strengthen the Department of Environmental Quality's role in protecting water resources. It specifically adds a duty for the department to "promote and coordinate the protection and enhancement of the quality of water resources" as part of its core responsibilities. This procedural update clarifies the department's authority to develop policies and coordinate efforts for water quality, without establishing new pollutant limits or directly regulating specific entities. The bill focuses on the department's internal framework for addressing water protection, not on new standards or enforcement actions.