# SOUTHWEST GAS CORP — Pima County, AZ

**Citation:** NPMS FIPS 04019 / OPID 18536  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

24.266343 active Natural Gas pipeline miles in Pima County, AZ; public NPMS snapshot 2026-07-16.

## Document text

SOUTHWEST GAS CORP (PHMSA OPID 18536) reported 24.266343 active Natural Gas pipeline miles in Pima County, AZ (county FIPS 04019) 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: `104d171d42b5cce2630ffcb1c2db3c1837d088b33da41811eba80a3f62851269`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T03:59:35.417Z
- Document slug: `npms-mileage-5a5153574fff124168e37737`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "04019",
  "stateFips": "04",
  "state": "AZ",
  "county": "Pima County",
  "region": "Pima County, AZ",
  "operator": {
    "id": "18536",
    "name": "SOUTHWEST GAS CORP"
  },
  "commodity": "Natural Gas",
  "mileage": 24.26634273,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 305,
    "rowSha256": "2aaae079c79e543c250e7cd41d85b24d09068198b2dc18124abb45860d044545"
  },
  "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"
}
```