Foristell Interim WWTP
Highway T, Foristell, MO 63348 · 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. It discharges under NPDES permit MO0116114 (administratively continued), which expires in March 2025, with 18 recorded violations in the last three years.
Treatment technology
4 treatment structures and unit processes identified at Foristell Interim WWTP.
Available with a free Klarifi account
See the full treatment train at Foristell Interim WWTP: structures, unit processes and planned upgrades, with 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
0.01 MGD
Wentzville · 5 mi away
0.02 MGD
Wright City · 6 mi away
0.07 MGD
Wentzville · 6 mi away
4.64 MGD
New Melle · 8 mi away
0.0033 MGD
New Melle · 8 mi away
0.01 MGD
Wentzville · 8 mi away
0.74 MGD
Moscow Mills · 8 mi away
0.31 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 October 26, 2026; facility record last updated August 14, 2024.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms