Our mission is to champion a healthy environment for a thriving Montana. Questions?

Access to clean water is essential to human health and to Montana’s economy. We support and implement measures to conserve this valuable resource and ensure that clean lakes, streams, and rivers remain part of Montana’s natural heritage.

The information on this page is provided as a resource to anyone who may be seeking a permit, license, or other authorization to operate under Montana's environmental laws. The links below will connect you with more detailed information across our website that we hope will be helpful.

3 天之前 · Contact information for public-facing positions at the Montana Department of Environmental Quality.

This map provides you the ability to interact with feature locations of DEQ's data throughout Montana. You can not only control the map and visible layers but also the ability to discover DEQ's mapped features within a distance of a defined location.

DEQ regulates discharges of storm water from municipal separate storm sewer systems (MS4s), construction activities, and industrial operations through three Montana Pollutant Discharge Elimination System (MPDES) General Permits.

20 小时之前 · Two conservation groups are petitioning the Montana Department of Environmental Quality to designate the Big Hole River, a treasured southwestern Montana fishery, as impaired for nutrient pollution.

Welcome to EmissionsOnline.mt.gov, your online tool for entering air emissions for your permitted/registered facility.

1 天前 · The Upper Missouri Waterkeeper and Big Hole River Foundation have petitioned the Montana Department of Environmental Quality to designate the Big Hole River as 'impaired' because of nutrients ...

Water quality standards consist of several parts: Together, the beneficial uses, numeric and narrative standards, and nondegration protections provide the framework for achieving Federal Clean Water Act and Montana Water Quality Act goals and protecting Montana water resources.