# ONEOK WESTEX TRANSMISSION, LLC — Midland County, TX

**Citation:** NPMS FIPS 48329 / OPID 31531  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

79.873913 active Natural Gas pipeline miles in Midland County, TX; public NPMS snapshot 2026-07-16.

## Document text

ONEOK WESTEX TRANSMISSION, LLC (PHMSA OPID 31531) reported 79.873913 active Natural Gas pipeline miles in Midland County, TX (county FIPS 48329) 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: `c59edaa5d38728e67624c941bd605502fb11fa67f5a2c303504087e2b45d75d0`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-25T05:58:39.634Z
- Document slug: `npms-mileage-a99bf6134a109f07b737d1d9`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "48329",
  "stateFips": "48",
  "state": "TX",
  "county": "Midland County",
  "region": "Midland County, TX",
  "operator": {
    "id": "31531",
    "name": "ONEOK WESTEX TRANSMISSION, LLC"
  },
  "commodity": "Natural Gas",
  "mileage": 79.87391289,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 13117,
    "rowSha256": "f3b50621b05b0360eba134074be65032a7d76131fc9a7d9491def89c9e1115ac"
  },
  "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": "ONEOK WESTEX TRANSMISSION, LLC"
}
```