# SOUTHWEST GAS CORP — La Paz County, AZ

**Citation:** NPMS FIPS 04012 / OPID 18536  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

10.920318 active Natural Gas pipeline miles in La Paz County, AZ; public NPMS snapshot 2026-07-16.

## Document text

SOUTHWEST GAS CORP (PHMSA OPID 18536) reported 10.920318 active Natural Gas pipeline miles in La Paz County, AZ (county FIPS 04012) 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: `15e5052c3793140d42812025d55c7433a0f6634db137c2a3323dc6d9e81d66e3`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T00:02:24.566Z
- Document slug: `npms-mileage-4db6ccd604c6557bd3daa56f`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "04012",
  "stateFips": "04",
  "state": "AZ",
  "county": "La Paz County",
  "region": "La Paz County, AZ",
  "operator": {
    "id": "18536",
    "name": "SOUTHWEST GAS CORP"
  },
  "commodity": "Natural Gas",
  "mileage": 10.9203182,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 274,
    "rowSha256": "d665e834a5a6d2b529ea2b8d3008c18f63b4adb34785dae1fc91d7aa7ee05a7d"
  },
  "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": "SOUTHWEST GAS CORP"
}
```