Gray Summit WWTF
Gray Summit, MO · Franklin County · Publicly Owned Treatment Works
- Average flow
- 0.1 MGD
- Design flow
- —
- NPDES permit
- MO0098981
- Administratively continued
- Permit expires
- June 2026
- Population served
- 324
- CWNS 2022
Gray Summit WWTF is a publicly owned wastewater treatment works in Gray Summit, Franklin County, Missouri treating an average of 0.1 million gallons per day, serving about 324 residents. Treatment on site includes lagoon, anaerobic. It discharges under NPDES permit MO0098981 (administratively continued), which expires in June 2026, with 209 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Lagoon, Anaerobic
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 209
- Effluent violations
- 105
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Gray Summit WWTF.
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Nearby wastewater treatment plants in Missouri
Gray Summit · 1 mi away
0.007 MGD
Gray Summit · 1 mi away
0.006 MGD
Gray Summit · 2 mi away
0.02 MGD
Villa Ridge · 2 mi away
0.001 MGD
Pacific · 2 mi away
0.01 MGD
Villa Ridge · 3 mi away
0.02 MGD
Labadie · 3 mi away
0.02 MGD
Villa Ridge · 3 mi away
0.001 MGD
Gray Summit 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.