Saint Francisville SW STP
PO Box 330, Saint Francisville, IL 62460 · Lawrence County · Publicly Owned Treatment Works
- Average flow
- 0.0049 MGD
- Design flow
- 0.48 MGD
- NPDES permit
- ILG580188
- Effective
- Permit expires
- May 2027
- Population served
- 1,036
- CWNS 2022
Saint Francisville SW STP is a publicly owned wastewater treatment works in Saint Francisville, Lawrence County, Illinois treating an average of 0.0049 million gallons per day against a permitted design capacity of 0.48 MGD, serving about 1,036 residents. It discharges under NPDES permit ILG580188 (effective), which expires in May 2027, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Saint Francisville SW STP.
Available with a free Klarifi account
See the full treatment train at Saint Francisville SW 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 Saint Francisville SW STP.
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Nearby wastewater treatment plants in Illinois
Allendale · 5 mi away
0.3 MGD
Bridgeport · 10 mi away
0.2 MGD
Sumner · 15 mi away
0.07 MGD
Claremont · 19 mi away
0.0057 MGD
Bellmont · 19 mi away
0.001 MGD
Keensburg · 19 mi away
0.03 MGD
West Salem · 20 mi away
0.01 MGD
Calhoun · 21 mi away
0.02 MGD
Saint Francisville SW 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 March 9, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms