U.S. flag

An official website of the United States government

Notice of Probable Violation Cases Initiated


This report lists all of the Notices of Probable Violation issued by PHMSA in a given year, beginning in 2002. The yearly tables include the date the Notice of Probable Violation was issued, the name of the operator involved, the PHMSA Region initiating the enforcement action(s), the total civil penalty proposed, whether a Compliance Order was included, the date on which the case was closed (if applicable), the current status of the case, and the PHMSA case number. Notices of Probable Violation (NOPVs) inform the operator that PHMSA is charging the operator with probable violations of pipeline safety statutes or regulations. These allegations are accompanied by either a proposed Compliance Order identifying actions the operator is required to take, proposed civil penalties for these alleged violations, or both. An operator has the right to respond and a right to an administrative hearing before a final decision is made by the Associate Administrator for Pipeline Safety. Only after a Final Order has been issued, and all compliance terms satisfied and civil penalties paid is a case considered "closed." The administrative enforcement procedures and other regulations governing the enforcement program are described in 49 CFR 190 Subpart B "Enforcement."

Notices of Probable Violation Issued: 2002–2024(1)


  1. PHMSA Work Management System as of 06/04/2024.

Information provided on this website is intended to enhance public understanding of PHMSA's enforcement program.

Aggregate and company-specific statistical information reflecting PHMSA's enforcement actions is provided beginning with 2002. Key documents associated with new administrative enforcement cases are provided beginning with 2007. Agency orders issued since 2002 are also provided.

The search feature may not retrieve every document associated with each individual enforcement action. Enforcement data is updated monthly as additional cases are initiated and other cases are resolved. Historical totals will change over time to reflect changes in case status.

Contact Us

Office of Pipeline Safety
U.S. Department of Transportation
Pipeline and Hazardous Materials Safety Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
United States

Business Hours:
9:00am-5:00pm ET, M-F

If you are deaf, hard of hearing, or have a speech disability, please dial 7-1-1 to access telecommunications relay services.