# MPLX LP — Sweetwater County, WY

**Citation:** NPMS FIPS 56037 / OPID 40149  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

0.418551 active Natural Gas pipeline miles in Sweetwater County, WY; public NPMS snapshot 2026-07-16.

## Document text

MPLX LP (PHMSA OPID 40149) reported 0.418551 active Natural Gas pipeline miles in Sweetwater County, WY (county FIPS 56037) 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: `f027d73cc46113aea19c69a45b038c39aa582ae0c334897869908b1b7b35f84b`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T03:37:22.867Z
- Document slug: `npms-mileage-b096dd2331c34c0fc6141028`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "56037",
  "stateFips": "56",
  "state": "WY",
  "county": "Sweetwater County",
  "region": "Sweetwater County, WY",
  "operator": {
    "id": "40149",
    "name": "MPLX LP"
  },
  "commodity": "Natural Gas",
  "mileage": 0.41855114,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 15484,
    "rowSha256": "50683c3de6aaf19a3b5d193347dc718ef9e9dbcc119f8135ab98fa9cffc90b5d"
  },
  "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": "MPLX LP"
}
```