# WEST PHOENIX POWER PLANT — Maricopa County, AZ

**Citation:** NPMS FIPS 04013 / OPID 31312  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

0.686201 active Natural Gas pipeline miles in Maricopa County, AZ; public NPMS snapshot 2026-07-16.

## Document text

WEST PHOENIX POWER PLANT (PHMSA OPID 31312) reported 0.686201 active Natural Gas pipeline miles in Maricopa County, AZ (county FIPS 04013) 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: `8a469939e6d08687aed8b5786b746e59f572ab19abdf6c1c33562d26e193ae67`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T05:07:02.208Z
- Document slug: `npms-mileage-525a19b22ec5177cb0e63602`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "04013",
  "stateFips": "04",
  "state": "AZ",
  "county": "Maricopa County",
  "region": "Maricopa County, AZ",
  "operator": {
    "id": "31312",
    "name": "WEST PHOENIX POWER PLANT"
  },
  "commodity": "Natural Gas",
  "mileage": 0.68620076,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 283,
    "rowSha256": "6ac925704e6bbc89b30d8ed4a8434af23c93844f851bbeda0c0f5ad35643adaf"
  },
  "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": "WEST PHOENIX POWER PLANT"
}
```