# NORTHERN ILLINOIS GAS CO — Mercer County, IL

**Citation:** NPMS FIPS 17131 / OPID 13710  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

19.551898 active Natural Gas pipeline miles in Mercer County, IL; public NPMS snapshot 2026-07-16.

## Document text

NORTHERN ILLINOIS GAS CO (PHMSA OPID 13710) reported 19.551898 active Natural Gas pipeline miles in Mercer County, IL (county FIPS 17131) 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: `581004f332b79d169c0022cdf5da86eca77c6be11318a0d4feaa9558bfc4ff98`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-25T22:02:29.963Z
- Document slug: `npms-mileage-124ac883ab6099a67d8a1cbe`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "17131",
  "stateFips": "17",
  "state": "IL",
  "county": "Mercer County",
  "region": "Mercer County, IL",
  "operator": {
    "id": "13710",
    "name": "NORTHERN ILLINOIS GAS CO"
  },
  "commodity": "Natural Gas",
  "mileage": 19.55189775,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 2154,
    "rowSha256": "2aad1a7521f940af7147dc959d611785f485a7c4f7b8308060b4e22e9682e475"
  },
  "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"
}
```