The Montana Department of Environmental Quality (DEQ) is a state agency responsible for protecting Montana's environment and public health. It oversees various programs related to air quality, water quality, waste management, and land reclamation. The DEQ works to ensure compliance with environmental laws and regulations, promoting sustainable practices across the state. The agency also provides resources and guidance to businesses, communities, and individuals to help them understand and meet environmental standards. Through monitoring and enforcement, the Montana DEQ aims to preserve the state's natural resources while supporting economic development and public safety.