# NORTHERN NATURAL GAS CO — Walworth County, WI

**Citation:** NPMS FIPS 55127 / OPID 13750  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

6.008739 active Natural Gas pipeline miles in Walworth County, WI; public NPMS snapshot 2026-07-16.

## Document text

NORTHERN NATURAL GAS CO (PHMSA OPID 13750) reported 6.008739 active Natural Gas pipeline miles in Walworth County, WI (county FIPS 55127) 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: `13a0e60e4a6683abae3f7915c33bfa8b24e4c0af26a4753d021bd19a8aa87d55`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-27T01:36:47.934Z
- Document slug: `npms-mileage-d0e0ee5939ed8320d50881e0`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "55127",
  "stateFips": "55",
  "state": "WI",
  "county": "Walworth County",
  "region": "Walworth County, WI",
  "operator": {
    "id": "13750",
    "name": "NORTHERN NATURAL GAS CO"
  },
  "commodity": "Natural Gas",
  "mileage": 6.00873864,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 15233,
    "rowSha256": "b48f35351f446379842898709013f48417f07306da4ab1c941680a8bdef66adf"
  },
  "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 NATURAL GAS CO"
}
```