Southwest WWTP
Springfield, MO · Greene County · Publicly Owned Treatment Works
- Average flow
- 25.32 MGD
- Design flow
- —
- NPDES permit
- MO0049522
- Effective
- Permit expires
- July 2025
- Population served
- 206,375
- CWNS 2022
Southwest WWTP is a publicly owned wastewater treatment works in Springfield, Greene County, Missouri treating an average of 25.32 million gallons per day, serving about 206,375 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, carrousels / oxidation ditches, biogas silos and other unit processes. It discharges under NPDES permit MO0049522 (effective), which expires in July 2025, 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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Carrousels / oxidation ditches
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Biogas silos
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Biogas balloons
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Biological Treatment, Other
unit processBiosolids Aerobic Digestion
unit processChemical P Removal
unit processFlow Equalization
unit processScreening
unit processUnlock exact unit counts →
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 Springfield
Springfield's capital improvement plan lists 44 water, sewer and wastewater line items worth $131M starting 2025–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Springfield →
| Project | Budget | Years |
|---|---|---|
| Southwest Treatment Plant - Headworks Renewal and Improvements | $15,000,000 | 2028–2029 |
| Environmental Services Operations Facility | $14,250,000 | 2025–2027 |
| Sanitary Sewer Overflow Reduction Project - Lower Wilson Parallel Trunk | $11,000,000 | 2026–2028 |
| Southwest Treatment Plant - Biogas Conversion to Renewable Natural Gas | $8,000,000 | 2025–2025 |
| Shared Cost Sanitary Sewer Construction - Developer Agreements | $7,500,000 | 2025–2029 |
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
1 verified contact for Southwest WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Southwest WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Missouri
Republic · 7 mi away
1.38 MGD
Nixa · 8 mi away
0.09 MGD
Springfield · 9 mi away
4.06 MGD
Nixa · 10 mi away
1.52 MGD
Clever · 11 mi away
0.15 MGD
Ozark · 11 mi away
0.49 MGD
Ozark · 12 mi away
1.03 MGD
Billings · 13 mi away
0.06 MGD
Southwest WWTP: 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 April 5, 2025.