Central Alexander County Sd STP
Clark Road, Olive Branch, IL 62969 · Alexander County · Publicly Owned Treatment Works
- Average flow
- 0.02 MGD
- Design flow
- 0.51 MGD
- NPDES permit
- ILG580257
- Effective
- Permit expires
- May 2027
- Population served
- —
- CWNS 2022
Central Alexander County Sd STP is a publicly owned wastewater treatment works in Olive Branch, Alexander County, Illinois treating an average of 0.02 million gallons per day against a permitted design capacity of 0.51 MGD. It discharges under NPDES permit ILG580257 (effective), which expires in May 2027, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures and unit processes at Central Alexander County Sd STP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Central Alexander County Sd STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Illinois
Tamms · 3 mi away
0.06 MGD
Thebes · 7 mi away
0.01 MGD
Ullin · 7 mi away
0.0089 MGD
East Cape Girardeau · 10 mi away
0.008 MGD
Mounds · 11 mi away
0.5 MGD
Dongola · 12 mi away
—
Olmsted · 13 mi away
0.18 MGD
Jonesboro · 14 mi away
0.12 MGD
Central Alexander County Sd 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 July 18, 2023.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms