# WASHINGTON GAS LIGHT CO — District of Columbia, DC

**Citation:** NPMS FIPS 11001 / OPID 22182  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

4.965648 active Natural Gas pipeline miles in District of Columbia, DC; public NPMS snapshot 2026-07-16.

## Document text

WASHINGTON GAS LIGHT CO (PHMSA OPID 22182) reported 4.965648 active Natural Gas pipeline miles in District of Columbia, DC (county FIPS 11001) 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: `55c66527d7aa11842b788568955f9c9b982a89cd213563781daf5cfc4e408089`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T16:13:32.234Z
- Document slug: `npms-mileage-9303d2715be4c82cd535642c`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "11001",
  "stateFips": "11",
  "state": "DC",
  "county": "District of Columbia",
  "region": "District of Columbia, DC",
  "operator": {
    "id": "22182",
    "name": "WASHINGTON GAS LIGHT CO"
  },
  "commodity": "Natural Gas",
  "mileage": 4.96564772,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 1233,
    "rowSha256": "f63d5876b991b2719981753101169bd55a121f821601e023c7e72eb675cf3648"
  },
  "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": "WASHINGTON GAS LIGHT CO"
}
```