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Report Pollution, Spills and Leaks

Suspected or confirmed petroleum releases must be reported to the DEQ within 24 hours of being detected  as required by ARM 17.56.501. Call the Leak Line at 1-800-457-0568, or after hours at (406) 324-4777. You must talk to a person. Voicemails are not adequate notification. For more information visit the Petroleum Release Program web pages.


All releases or spills of hazardous or deleterious substances or other wastes, regardless of size, must be properly and expeditiously managed, contained, and removed to protect public health and the environment. If you observe some activity that may harm the environment or cause a threat to human health, please report it to the DEQ Enforcement Division for investigation.