# ALLIANT ENERGY - INTERSTATE POWER AND LIGHT COMPANY — Washington County, IA

**Citation:** NPMS FIPS 19183 / OPID 8170  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

15.440796 active Natural Gas pipeline miles in Washington County, IA; public NPMS snapshot 2026-07-16.

## Document text

ALLIANT ENERGY - INTERSTATE POWER AND LIGHT COMPANY (PHMSA OPID 8170) reported 15.440796 active Natural Gas pipeline miles in Washington County, IA (county FIPS 19183) 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: `bc6352c6435289154497b06932022a09844f801aa8b91f9e6773116f46245fe3`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T20:46:38.213Z
- Document slug: `npms-mileage-6aa041641e117cb824bf803a`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "19183",
  "stateFips": "19",
  "state": "IA",
  "county": "Washington County",
  "region": "Washington County, IA",
  "operator": {
    "id": "8170",
    "name": "ALLIANT ENERGY - INTERSTATE POWER AND LIGHT COMPANY"
  },
  "commodity": "Natural Gas",
  "mileage": 15.4407955,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 3187,
    "rowSha256": "fb0fd2dc5773c3743aac527ae4ecc3ee0839e73f6d1c0a30b3840afc43b59aaa"
  },
  "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": "ALLIANT ENERGY - INTERSTATE POWER AND LIGHT COMPANY"
}
```