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Program Contacts

In an emergency, make sure you notify 911 and your local authorities first. Then proceed to contact our program through the DES duty officer program at 406-324-4777, which notifies the DEQ duty officer program, or contact our offices directly during business hours. Please keep trying until you speak to a live person who can get you assistance as it is being requested.

DEQ Duty Office Program & Spill/Complaint Info

Agency Phone Number

Montana Department of Environmental Quality
   Drinking Water Contacts  
Helena Office 444-4400
Billings Office 247-4430
Kalispell Office 755-8985
   Wastewater Contacts
Helena Office/Bill Bahr 444-5337
Tribal Contacts
Helena EPA Office (866) 457-2690
(800) 424-8802
(after hours)