# MARATHON PIPE LINE LLC — Williamson County, IL

**Citation:** NPMS FIPS 17199 / OPID 32147  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

19.843496 active Crude Oil pipeline miles in Williamson County, IL; public NPMS snapshot 2026-07-16.

## Document text

MARATHON PIPE LINE LLC (PHMSA OPID 32147) reported 19.843496 active Crude Oil pipeline miles in Williamson County, IL (county FIPS 17199) 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: `d52aa62674afd1d4549899181772ebc0eee76cd0f076c848e08596bc87493040`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T15:04:11.792Z
- Document slug: `npms-mileage-7ae694e76d949c22085b05f8`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "17199",
  "stateFips": "17",
  "state": "IL",
  "county": "Williamson County",
  "region": "Williamson County, IL",
  "operator": {
    "id": "32147",
    "name": "MARATHON PIPE LINE LLC"
  },
  "commodity": "Crude Oil",
  "mileage": 19.84349621,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 2346,
    "rowSha256": "e71b8c95fb0d1e517952dae0c5fd421517dc51c746e9c398e520333e7a5c8559"
  },
  "citedSections": [
    "195.61"
  ],
  "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": "MARATHON PIPE LINE LLC"
}
```