# AMEREN ILLINOIS COMPANY — St. Clair County, IL

**Citation:** NPMS FIPS 17163 / OPID 32513  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

70.042814 active Natural Gas pipeline miles in St. Clair County, IL; public NPMS snapshot 2026-07-16.

## Document text

AMEREN ILLINOIS COMPANY (PHMSA OPID 32513) reported 70.042814 active Natural Gas pipeline miles in St. Clair County, IL (county FIPS 17163) 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: `0b83a7af99870787da4e00a9bd1f3960eca415de1e212ecf95efd20e912c1439`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-25T23:41:04.957Z
- Document slug: `npms-mileage-6cd3bd94946ce4a5d79c42da`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "17163",
  "stateFips": "17",
  "state": "IL",
  "county": "St. Clair County",
  "region": "St. Clair County, IL",
  "operator": {
    "id": "32513",
    "name": "AMEREN ILLINOIS COMPANY"
  },
  "commodity": "Natural Gas",
  "mileage": 70.04281444,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 2226,
    "rowSha256": "bda4d3335d9615088d4fd63077a719d2fc6081971b174aa34412d8c687d0d828"
  },
  "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": "AMEREN ILLINOIS COMPANY"
}
```