# TRANSWESTERN PIPELINE COMPANY LLC — Apache County, AZ

**Citation:** NPMS FIPS 04001 / OPID 19610  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

88.904379 active Natural Gas pipeline miles in Apache County, AZ; public NPMS snapshot 2026-07-16.

## Document text

TRANSWESTERN PIPELINE COMPANY LLC (PHMSA OPID 19610) reported 88.904379 active Natural Gas pipeline miles in Apache County, AZ (county FIPS 04001) 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: `35442d72785ab395097073e34e8fe0be0098e27f97a45336df65a5324fecbccd`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T12:10:42.123Z
- Document slug: `npms-mileage-5c1a377a60528d99030db306`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "04001",
  "stateFips": "04",
  "state": "AZ",
  "county": "Apache County",
  "region": "Apache County, AZ",
  "operator": {
    "id": "19610",
    "name": "TRANSWESTERN PIPELINE COMPANY LLC"
  },
  "commodity": "Natural Gas",
  "mileage": 88.90437879,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 264,
    "rowSha256": "85921e8405a79f8d99b05fe31e6a0611f30afa703eb490809854bd99e7391d7f"
  },
  "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": "TRANSWESTERN PIPELINE COMPANY LLC"
}
```