Manteca Wwqcf
Manteca, CA · San Joaquin County · Publicly Owned Treatment Works
- Average flow
- 5.18 MGD
- Design flow
- 9.87 MGD
- NPDES permit
- CA0081558
- Expired
- Permit expires
- March 2026
- Population served
- 67,537
- CWNS 2022
Manteca Wwqcf is a publicly owned wastewater treatment plant in Manteca, San Joaquin County, California treating an average of 5.18 million gallons per day against a permitted design capacity of 9.87 MGD, serving about 67,537 residents. Treatment on site includes clarifiers, uncovered lagoons, biogas silos. It discharges under NPDES permit CA0081558 (expired), which expires in March 2026, with 7 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Manteca
Manteca's capital improvement plan lists 27 water, sewer and wastewater line items worth $67M starting 2026–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Manteca →
| Project | Budget | Years |
|---|---|---|
| WQCF - Sludge Thickener (DAF) Unit No. 3 | $18,400,000 | 2026–2027 |
| WQCF-04 Side Stream Treatment | $7,635,000 | 2027–2028 |
| WQCF-14 UV Disinfection System Upgrade CIP 25004 | $5,800,000 | 2027–2027 |
| WQCF-03: Zone B Mixing System - Both Plants | $4,865,000 | 2026–2027 |
| WQCF-03: IMLR Pump Replacement - Both Plants | $4,460,000 | 2026–2027 |
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
9 verified contacts for Manteca Wwqcf, with validated emails and direct phone numbers.
Unlock 9 verified contacts (6 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Manteca Wwqcf, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Tracy · 9 mi away
8.9 MGD
Stockton · 10 mi away
29.2 MGD
Mountain House · 14 mi away
1.74 MGD
Discovery Bay · 19 mi away
1.01 MGD
Lodi · 22 mi away
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Brentwood · 26 mi away
1.46 MGD
Oakley · 28 mi away
2.71 MGD
Turlock · 30 mi away
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Manteca Wwqcf: 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 August 19, 2026.