Montana Department of Environmental Quality

Welcome to Montana DEQ The Montana Department of Environmental Quality is home to a dedicated team of professionals, engineers, and scientists who make objective, scientific, accurate, and timely decisions on complex topics. DEQ implements Montana’s environmental laws and provides high quality public service and technical assistance. Montana DEQ is here to serve you and to ensure Montanans have clean air, water, and land free from contamination. DEQ protects Montana’s environment and promotes a healthy and thriving way of life for all Montanans – as reflected in the Agency’s mission statement. At DEQ, we believe Montana communities and businesses flourish when environmental protections are effectively and consistently implemented in a transparent way. DEQ works together with stakeholders and partners in private industry, non-governmental organizations, tribes, the public, and local governments to protect the environment, fully comply with the laws of Montana, and to support Montana’s natural resource economy. Thank you for visiting our website. I hope you find the information you are looking for on these pages. If you do not find what you need or still have questions, please feel free to contact us. We are here to assist you in understanding and navigating Montana’s environmental regulations.