# NORTHERN ILLINOIS GAS CO — Stephenson County, IL

**Citation:** NPMS FIPS 17177 / OPID 13710  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

41.438905 active Natural Gas pipeline miles in Stephenson County, IL; public NPMS snapshot 2026-07-16.

## Document text

NORTHERN ILLINOIS GAS CO (PHMSA OPID 13710) reported 41.438905 active Natural Gas pipeline miles in Stephenson County, IL (county FIPS 17177) 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: `86328bfd343a58f117a2f1b187c2469aaaad503431e04677983d96a4b0d607a1`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T10:32:45.222Z
- Document slug: `npms-mileage-e29e156490808e3d100f5ec3`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "17177",
  "stateFips": "17",
  "state": "IL",
  "county": "Stephenson County",
  "region": "Stephenson County, IL",
  "operator": {
    "id": "13710",
    "name": "NORTHERN ILLINOIS GAS CO"
  },
  "commodity": "Natural Gas",
  "mileage": 41.43890532,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 2254,
    "rowSha256": "21318227c305840742fec16830ff6f0cd6f597ed4f38021f5c1a6b45b4c75749"
  },
  "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": "NORTHERN ILLINOIS GAS CO"
}
```