# NORTHERN ILLINOIS GAS CO — Grundy County, IL

**Citation:** NPMS FIPS 17063 / OPID 13710  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

61.131053 active Natural Gas pipeline miles in Grundy County, IL; public NPMS snapshot 2026-07-16.

## Document text

NORTHERN ILLINOIS GAS CO (PHMSA OPID 13710) reported 61.131053 active Natural Gas pipeline miles in Grundy County, IL (county FIPS 17063) 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: `4021453b591baeb8af4bde85efd499f3205a17de4eba782714d35c56d64f81e4`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T02:29:36.962Z
- Document slug: `npms-mileage-baefe5a8a6497522269b806a`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "17063",
  "stateFips": "17",
  "state": "IL",
  "county": "Grundy County",
  "region": "Grundy County, IL",
  "operator": {
    "id": "13710",
    "name": "NORTHERN ILLINOIS GAS CO"
  },
  "commodity": "Natural Gas",
  "mileage": 61.13105309,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 1939,
    "rowSha256": "7da256e5d8e41b6c9c7a379514fbef2d5a4d0f7eee5fed5a5352665140581340"
  },
  "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"
}
```