The National Pipeline Mapping System (NPMS) is a dataset containing locations of and
information about gas transmission and hazardous liquid pipelines, Liquefied Natural Gas
(LNG) plants, and breakout tanks which are under the jurisdiction of the Pipeline and
Hazardous Materials Safety Administration (PHMSA). The data is used by PHMSA for emergency
response, pipeline inspections, regulatory management and compliance, and analysis purposes.
It is used by government officials, pipeline operators, and the general public for a variety
of tasks including emergency response, smart growth planning, critical infrastructure
protection, and environmental protection.
This website contains:
- The NPMS Public Map Viewer, which
allows the public to view pipeline maps in a user-selected county;
- PIMMA, which allows government officials and
pipeline operators to view pipeline maps with additional scope and detail; and
- Find Who’s
Operating Pipelines in Your Area, which searches for pipeline operator
contact information in a user-selected county, state, or ZIP code.
Please note that the spatial accuracy of pipeline data in the NPMS is +/-500 feet.
Therefore,
the NPMS should never be used as a substitute for calling
811 before
digging or excavating. Distribution and gathering pipelines are not included in the NPMS.
For an overview of the NPMS website functionality, please refer to the
NPMS brochure.
Please visit the
FAQ page if you
have further questions, or you may
Contact Us.
