# CITY OF MILLBRAE WASTEWATER TREATMENT PLANT, MILLBRAE CA: EPA ECHO compliance status: Unknown

**Remediation Urgency Score:** 30/100

| Field | Value |
|---|---|
| Facility | CITY OF MILLBRAE WASTEWATER TREATMENT PLANT |
| EPA Registry ID | 110000730479 |
| Address | 400 EAST MILLBRAE AVENUE, MILLBRAE, CA, 94030 |
| County | SAN MATEO |
| SIC | 4952: Sewerage Systems |
| Overall compliance status | Unknown |
| Significant noncomplier | No |
| Quarters in noncompliance (last 12) | 6 |
| Clean Water Act | Unknown |
| Formal enforcement actions (5 years) | 0 |
| Total penalties | $0 |
| Last penalty | 04/18/2013 |
| Inspections (5 years) | 2 |
| Last inspection | 2025-05-28 |
| Watershed | San Francisco Bay |

## Why this score
- 6 of the last 12 quarters in noncompliance.
- Current violation under CWA.

Source: U.S. EPA ECHO (Enforcement and Compliance History Online) (https://echo.epa.gov/detailed-facility-report?fid=110000730479). Last refreshed: 2026-11-04T18:09:33.420Z.
Compliance data comes from EPA ECHO and may lag state records; a violation flag is not a finding of wrongdoing. Informational only; not legal or engineering advice.