Sfia, Mel Leong Sanitary And Industrial Treatment Plants
San Francisco, CA · San Francisco County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 3.4 MGD
- NPDES permit
- CA0038318
- Effective
- Permit expires
- March 2030
- Population served
- 1
- CWNS 2022
Sfia, Mel Leong Sanitary And Industrial Treatment Plants is a publicly owned wastewater treatment works in San Francisco, San Francisco County, California, serving about 1 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, biogas silos. It discharges under NPDES permit CA0038318 (effective), which expires in March 2030, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Aerated lagoons
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Uncovered lagoons
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Biogas silos
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Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in San Francisco
San Francisco's capital improvement plan lists 31 water, sewer and wastewater line items worth $6M starting 2025–2029. The largest budgeted items are shown here.
All water and sewer capital projects in San Francisco →
| Project | Budget | Years |
|---|---|---|
| Treatment Facilities | $1,132,762 | 2025–2033 |
| Stormwater Management/Flood Control | $661,526 | 2025–2033 |
| Local Water Conveyance/Distribution System | $562,695 | 2025–2033 |
| Collection System - Large Diameter Sewer | $468,883 | 2025–2033 |
| Collection System - Sewer Improvements | $450,297 | 2025–2033 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Sfia, Mel Leong Sanitary And Industrial Treatment Plants.
No verified contacts on file yet
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Nearby wastewater treatment plants in California
Burlingame · 4 mi away
—
Pacifica · 6 mi away
1.91 MGD
San Mateo · 7 mi away
—
San Francisco · 7 mi away
45.87 MGD
San Leandro · 12 mi away
—
Half Moon Bay · 12 mi away
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Oakland · 14 mi away
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Sausalito · 15 mi away
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Sfia, Mel Leong Sanitary And Industrial Treatment Plants: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated May 10, 2025.