# MILWAUKEE METROPOLITAN SEWERAGE DISTRICT — Waukesha County, WI

**Citation:** NPMS FIPS 55133 / OPID 32581  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

0.50983 active Other Gas pipeline miles in Waukesha County, WI; public NPMS snapshot 2026-07-16.

## Document text

MILWAUKEE METROPOLITAN SEWERAGE DISTRICT (PHMSA OPID 32581) reported 0.50983 active Other Gas pipeline miles in Waukesha County, WI (county FIPS 55133) 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: `e5cb141669079de344058ff7a1c57b792059622e2887142fd7f2d88db07fa6e6`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-27T17:18:53.481Z
- Document slug: `npms-mileage-600ec08e370cd9a0868632de`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "55133",
  "stateFips": "55",
  "state": "WI",
  "county": "Waukesha County",
  "region": "Waukesha County, WI",
  "operator": {
    "id": "32581",
    "name": "MILWAUKEE METROPOLITAN SEWERAGE DISTRICT"
  },
  "commodity": "Other Gas",
  "mileage": 0.50982955,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 15250,
    "rowSha256": "c42fafddb2016098047c024e43eb279e977b941bd202c3ac453b54411cd8bbc8"
  },
  "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": "MILWAUKEE METROPOLITAN SEWERAGE DISTRICT"
}
```