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Browse Pipeline Incidents

11 incidents in MT.

PHMSA Pipeline Incident Database

Browse 11 pipeline incidents reported to PHMSA. Each record includes the operator, pipeline type, cause, casualties, and property damage. Use the filters below to narrow results by state, pipeline type, cause, or keyword.

DateOperatorStateTypeCauseFatalitiesInjuriesDamage ($)
Jan 17, 2024 NORTHWESTERN CORPORATION MT gas_distribution OTHER INCIDENT CAUSE 0 0 —
Mar 19, 2021 MONTANA - DAKOTA UTILITIES CO MT gas_distribution CORROSION FAILURE 0 0 —
Nov 18, 2019 MONTANA - DAKOTA UTILITIES CO MT gas_distribution OTHER OUTSIDE FORCE DAMAGE 0 2 —
Mar 20, 2019 MONTANA - DAKOTA UTILITIES CO MT gas_distribution PIPE, WELD, OR JOINT FAILURE 0 1 —
Dec 7, 2018 NORTHWESTERN CORPORATION MT gas_distribution EXCAVATION DAMAGE 0 0 —
Aug 26, 2018 ENERGY WEST MONTANA MT gas_distribution PIPE, WELD, OR JOINT FAILURE 0 0 —
Dec 27, 2016 ENERGY WEST MONTANA MT gas_distribution OTHER OUTSIDE FORCE DAMAGE 0 1 —
Oct 31, 2014 FIVE VALLEY GAS CO MT gas_distribution EXCAVATION DAMAGE 0 2 —
Feb 6, 2014 NORTHWESTERN ENERGY LLC MT gas_distribution NATURAL FORCE DAMAGE 0 0 —
Jun 8, 2011 MONTANA - DAKOTA UTILITIES CO MT gas_distribution NATURAL FORCE DAMAGE 0 0 —
May 6, 2010 NORTHWESTERN ENERGY LLC MT gas_distribution EXCAVATION DAMAGE 1 0 —

Frequently Asked Questions

PHMSA requires operators to report incidents involving a fatality, an injury requiring hospitalization, property damage of $122,000 or more (adjusted periodically), highly volatile liquid releases of 5 barrels or more, other liquid releases of 50 barrels or more, or any unintentional release of gas resulting in an event meeting certain criteria.

The Damage column shows the reported property damage for each incident. This can include damage to the pipeline itself, nearby structures, vehicles, and other property. Additional costs such as lost commodity, environmental remediation, and emergency response are tracked separately and shown on each incident's detail page.

Yes. Use the search field above to filter incidents by operator name. The search matches partial names, so searching for "Pacific Gas" will find all variations of that operator's reported name.