Foristell Interim WWTP
Foristell, MO · Saint Charles County · Publicly Owned Treatment Works
- Average flow
- 0.01 MGD
- Design flow
- —
- NPDES permit
- MO0116114
- Administratively continued
- Permit expires
- March 2025
- Population served
- 242
- CWNS 2022
Foristell Interim WWTP is a publicly owned wastewater treatment works in Foristell, Saint Charles County, Missouri treating an average of 0.01 million gallons per day, serving about 242 residents. Treatment on site includes biological treatment, other, biosolids aerobic digestion, disinfection, uv, screening. It discharges under NPDES permit MO0116114 (administratively continued), which expires in March 2025, with 18 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biological Treatment, Other
unit processBiosolids Aerobic Digestion
unit processDisinfection, UV
unit processScreening
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 18
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Foristell Interim WWTP.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in Missouri
Wentzville · 5 mi away
0.0093 MGD
Wentzville · 5 mi away
0.03 MGD
Wright City · 6 mi away
0.07 MGD
Wentzville · 6 mi away
4.34 MGD
New Melle · 8 mi away
0.0039 MGD
New Melle · 8 mi away
0.0083 MGD
Wentzville · 8 mi away
0.51 MGD
Moscow Mills · 8 mi away
0.25 MGD
Foristell Interim 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 August 14, 2024.