CITY OF MILLBRAE WASTEWATER TREATMENT PLANT
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $0 in total penalties since records began.
- Address
-
400 EAST MILLBRAE AVENUE
MILLBRAE, CA 94030
View on map ↗ - County
- SAN MATEO County
- Inspections
- 3 · last May 28, 2025
- Total Penalties
- $0 · last Apr 18, 2013
- Registry ID
- 110000730479
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Effluent Violations - Unauthorized Discharge | Dec 31, 2022 | — | Open |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Solids, total suspended | DMR, Limited - Numeric Violation | 31.70 mg/L | 30.00 | +6% | Sep 2025 | Open |
| BOD, carbonaceous [5 day, 20 C] | DMR, Limited - Numeric Violation | 48.67 mg/L | 40.00 | +22% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 30.71 mg/L | 30.00 | +2% | May 2025 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 67.43 mg/L | 45.00 | +50% | May 2025 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.