Union East STP
Denmark Road, Union, MO 63084 · Franklin County · Publicly Owned Treatment Works
- Average flow
- 0.33 MGD
- Design flow
- —
- NPDES permit
- MO0121312
- Administratively continued
- Permit expires
- June 2025
- Population served
- 8,000
- CWNS 2022
Union East STP is a publicly owned wastewater treatment works in Union, Franklin County, Missouri treating an average of 0.33 million gallons per day, serving about 8,000 residents. It discharges under NPDES permit MO0121312 (administratively continued), which expires in June 2025, with 0 recorded violations in the last three years.
Treatment technology
5 treatment structures and unit processes identified at Union East STP.
Available with a free Klarifi account
See the full treatment train at Union East STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- 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 Union East STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Missouri
Villa Ridge · 3 mi away
—
Union · 3 mi away
1.05 MGD
Villa Ridge · 3 mi away
0.002 MGD
Union · 3 mi away
0.0017 MGD
Villa Ridge · 4 mi away
0.03 MGD
Villa Ridge · 4 mi away
0.002 MGD
Villa Ridge · 5 mi away
0.0013 MGD
Villa Ridge · 5 mi away
0.002 MGD
Union East STP: 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 13, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms