Texas Pipeline System Mileage

*A T-4 is a permit to operate a pipeline.

** A master metered system is a pipeline system, other than one designated as a local distribution system, for distributing natural gas within but not limited to a definable area, such as a mobile home park, housing project, or apartment complex, where the operator purchases metered gas from an outside source for resale through a gas distribution pipeline system.

*** Increase from PHMSA Gathering Line Rule CY-2022: https://www.federalregister.gov/documents/2021/11/15/2021-24240/pipeline-safety-safety-of-gas-gathering-pipelines-extension-of-reporting-requirements-regulation-of

**** Data Source Update to PHMSA Pipeline Datamart. Miles based on calendar year end annual reports for pipelines operating in Texas.

Pipeline System Mileage
Item	Pipeline Type	2023	2024	2025	Jurisdiction	T-4*
1	Natural Gas Distribution: Mains - Services	167,442	168,778	172,672	Intra-State	No
2	Natural Gas Master Meters**	577	570	575	Intra-State	No
3	LP-Gas Distribution: Mains - Services	495	511	512	Intra-State	No
4	Natural Gas Transmission	33,760	33,816	34,587	Intra-State	Yes
5	Natural Gas Gathering- Regulated	45,266**	45,762	45,704	Intra-State	Yes
6	Natural Gas Gathering - Reporting Only	96,529**	106,832	109,909	Intra-State	Yes
7	Hazardous Liquids Transmission	44,143	44,738	44,641	Intra-State	Yes
8	Hazardous Liquids Gathering - Regulated	1,423	642	773	Intra-State	Yes
9	Hazardous Liquids Gathering - Reporting Only	15,745	17,174	16,851	Intra-State	Yes
10	Total Intra-State Pipeline Miles (RRC) (sum of 1 through 9)	405,380	418,823	426,224
11	Inter-State Natural Gas Transmission - Gathering	14,214	14,725	14,396	Inter-State	Courtesy
12	Inter-State Hazardous Liquids Transmission - Gathering	32,432	31,477	32,170	Inter-State	Courtesy
13	Total Inter-State Pipeline Miles (PHMSA) (sum of 11 and 12)	46,646	46,202	46,566
14	Total Pipeline Miles in Texas: Inter-State (PHMSA) and Intra-State (RRC) (sum of 10 and 13)	452,026****	465,025****	472,790