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Pipeline and Hazardous Materials Safety Administration

1200 New Jersey Avenue SE., Washington, DC 20590


Deputy AdministratorTristan Brown
Executive DirectorHoward W. McMillan

The Pipeline and Hazardous Materials Safety Administration (PHMSA) was established on February 20, 2005. It is responsible for hazardous materials transportation and pipeline safety.

Hazardous Materials

The Office of Hazardous Materials Safety develops and issues regulations for the safe and secure transportation of hazardous materials by all modes, except bulk transportation by water. The regulations cover shipper and carrier operations, packaging and container specifications, and hazardous materials definitions. The Office provides training and outreach to help shippers and carriers meet hazardous material regulatory requirements. The Office enforces regulations other than those applicable to a single mode of transportation. It manages a fee-funded grant program to help States plan for hazardous materials emergencies and to assist them and Indian tribes with training for hazardous materials emergencies. The Office also maintains a national safety program to safeguard food and other products from contamination during motor or rail transportation. | Email:


The Office of Pipeline Safety (OPS) ensures the safety, security, and environmental protection of the Nation's pipeline transportation system. The Office establishes and enforces safety and environmental standards for pipeline transportation of gas and hazardous liquids. The Office analyzes data, educates and trains, promotes damage prevention, and conducts research and development for pipeline safety. Through OPS administered grants, States that voluntarily assume regulatory jurisdiction of pipelines can receive funding for up to 50 percent of the costs for their intrastate pipeline safety programs. OPS engineers inspect most interstate pipelines and other facilities not covered by State programs. In accordance with the Oil Pollution Act of 1990, the Office also approves and tests oil pipeline spill response plans.

Sources of Information

Business Opportunities

Information on the acquisition vehicles that the PHMSA uses to fulfill the requirements for goods and services of its program offices is available online.

Career Opportunities

The PHMSA relies on accident investigators, accountants, attorneys, auditors, budget analysts, economists, engineers, finance analysts, geographic information systems specialists, grant specialists, human resource specialists, information technology specialists, and other professionals to carry out its mission.

In 2020, the PHMSA ranked 322d among 411 agency subcomponents in the Partnership for Public Service's Best Places To Work Agency Rankings.

Data / Statistics

The Office of Pipeline Safety makes available data on federally regulated and State regulated natural gas pipelines, hazardous liquid pipelines, and liquefied natural gas plants. The operators of these pipeline facilities report this data in accordance with PHMSA pipeline safety regulations. The PHMSA provides downloads of the raw data, yearly summaries, multiyear trends of safety performance metrics, and inventories tracking the removal of aging and other higher-risk infrastructure.

Environmental Justice

The PHMSA website provides information for promoting environmental justice and ensuring nondiscrimination in communities.

Freedom of Information Act (FOIA)

The FOIA establishes the public's right to obtain information from Federal Government agencies. Any person may file a FOIA request, including citizens and foreign nationals, as well as associations, organizations, and universities.

Frequently Asked Questions (FAQs)

The PHMSA posts answers to FAQs on its website.


The PHMSA website has an inspection activity glossary.

The PHMSA has posted a list of definitions that are associated with safe travel.

Hazardous Materials

The Hazardous Materials Information Center can provide assistance with applying the hazardous materials regulations (49 CFR Parts 100–185), can provide information on hazardous materials transportation and rulemakings, receives reports of violations of the hazardous materials regulations, can provide copies of recent Federal Register publications or Department of Transportation special permits, can provide copies of training materials, and receives requests for formal letters of interpretation. | Email:


Millions of miles of transportation pipelines deliver the energy products that the American public uses to keep homes and businesses running. While rare, pipeline incidents can be fatal and cost millions of dollars in property damage. The Office of Pipeline Safety participated in the investigations of major pipeline incidents in San Bruno, CA; Allentown, PA; and Marshall, MI. In its commitment to safety awareness and outreach, the Office offers a historical look at high-profile pipeline incidents.


The resources library contains an accessible collection of public documents related to the safe transport of hazardous materials.

Mapping System

The National Pipeline Mapping System public map viewer is a Web-based application designed to assist the general public with displaying and querying data related to gas transmission and hazardous liquid pipelines, liquefied natural gas plants, and breakout tanks under the jurisdiction of the PHMSA.


The PHMSA posts news items online.