Northwest Valley Middle School WWTF
House Springs, MO · Jefferson County · Publicly Owned Treatment Works
- Average flow
- 0.03 MGD
- Design flow
- —
- NPDES permit
- MO0044580
- Terminated
- Permit expires
- October 2028
- Population served
- 750
- CWNS 2022
Northwest Valley Middle School WWTF is a publicly owned wastewater treatment works in House Springs, Jefferson County, Missouri treating an average of 0.03 million gallons per day, serving about 750 residents. Treatment on site includes biosolids aerobic digestion, disinfection, uv, disinfection, chlorine/ chloramine, screening. It discharges under NPDES permit MO0044580 (terminated), which expires in October 2028, with 18 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biosolids Aerobic Digestion
unit processDisinfection, UV
unit processDisinfection, chlorine/ chloramine
unit processScreening
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 18
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Northwest Valley Middle School WWTF.
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Nearby wastewater treatment plants in Missouri
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House Springs · 2 mi away
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House Springs · 2 mi away
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Northwest Valley Middle School WWTF: 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 14, 2024.