Gray Summit WWTF
Gray Summit, MO 63039 · Franklin County · Publicly Owned Treatment Works
- Average flow
- 0.0062 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 0.0062 million gallons per day, serving about 324 residents. It discharges under NPDES permit MO0098981 (administratively continued), which expires in June 2026, with 215 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Gray Summit WWTF.
Available with a free Klarifi account
See the full treatment train at Gray Summit WWTF: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 215
- Effluent violations
- 111
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
0.0087 MGD
Gray Summit · 1 mi away
0.0055 MGD
Gray Summit · 2 mi away
0.02 MGD
Villa Ridge · 2 mi away
0.003 MGD
Pacific · 2 mi away
0.01 MGD
Villa Ridge · 3 mi away
0.03 MGD
Labadie · 3 mi away
0.04 MGD
Villa Ridge · 3 mi away
0.002 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 October 26, 2026; facility record last updated August 14, 2024.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms