Havana Stw, City Of
1100 South 12th Street, Havana, IL 62644 · Mason County · Publicly Owned Treatment Works
- Average flow
- 0.17 MGD
- Design flow
- 3 MGD
- NPDES permit
- IL0023388
- Administratively continued
- Permit expires
- August 2022
- Population served
- 3,287
- CWNS 2022
Havana Stw, City Of is a publicly owned wastewater treatment plant in Havana, Mason County, Illinois treating an average of 0.17 million gallons per day against a permitted design capacity of 3 MGD, serving about 3,287 residents. It discharges under NPDES permit IL0023388 (administratively continued), which expires in August 2022, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Havana Stw, City Of.
Available with a free Klarifi account
See the full treatment train at Havana Stw, City Of: 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
1 verified contact for Havana Stw, City Of, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Havana Stw, City Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Bath · 7 mi away
0.01 MGD
Lewistown · 9 mi away
0.33 MGD
Easton · 12 mi away
0.14 MGD
Ipava · 14 mi away
0.08 MGD
Cuba · 15 mi away
0.21 MGD
Smithfield · 17 mi away
0.02 MGD
Canton · 18 mi away
0.01 MGD
Canton · 18 mi away
2.06 MGD
Havana Stw, City Of: 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 November 27, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms