# COLUMBIA GULF TRANSMISSION, LLC — Williamson County, TN

**Citation:** NPMS FIPS 47187 / OPID 2620  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

72.375778 active Natural Gas pipeline miles in Williamson County, TN; public NPMS snapshot 2026-07-16.

## Document text

COLUMBIA GULF TRANSMISSION, LLC (PHMSA OPID 2620) reported 72.375778 active Natural Gas pipeline miles in Williamson County, TN (county FIPS 47187) in the public NPMS summary snapshot dated 2026-07-16. The snapshot includes active assets only and excludes permanently abandoned assets. Exact pipeline locations and restricted NPMS GIS data are not included.

## Provenance

- Official: Yes
- Source: <https://www.npms.phmsa.dot.gov/Documents/NPMS_Active_Pipe_County_Mileage.xlsx>
- Source ID: `npms-public-summaries`
- SHA-256: `511d01fdc97909a43b660cd856331b68e857be867398d04c0c262fdb0a0996e8`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-27T03:16:33.363Z
- Document slug: `npms-mileage-439e3162ab7125de25c63079`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "47187",
  "stateFips": "47",
  "state": "TN",
  "county": "Williamson County",
  "region": "Williamson County, TN",
  "operator": {
    "id": "2620",
    "name": "COLUMBIA GULF TRANSMISSION, LLC"
  },
  "commodity": "Natural Gas",
  "mileage": 72.37577843,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 10775,
    "rowSha256": "045d2ed7e538692c04c01ddaf2ea0a3c14e5b56ad8f1589b005e5de5d80f5b6a"
  },
  "citedSections": [
    "191.29"
  ],
  "caveat": "Public aggregate snapshot only. It is not a complete representation of exact pipeline locations, may be updated, and is not an agency finding about facility condition.",
  "jurisdiction": "US",
  "operatorName": "COLUMBIA GULF TRANSMISSION, LLC"
}
```