Nashville Stp, City Of
9300 State Route 127, Nashville, IL 62263 · Washington County · Publicly Owned Treatment Works
- Average flow
- 0.47 MGD
- Design flow
- 1.7 MGD
- NPDES permit
- IL0027081
- Effective
- Permit expires
- April 2027
- Population served
- 3,410
- CWNS 2022
Nashville Stp, City Of is a publicly owned wastewater treatment works in Nashville, Washington County, Illinois treating an average of 0.47 million gallons per day against a permitted design capacity of 1.7 MGD, serving about 3,410 residents. It discharges under NPDES permit IL0027081 (effective), which expires in April 2027, with 11 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Nashville Stp, City Of.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 11
- Effluent violations
- 11
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Nashville Stp, City Of, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Nashville Stp, City Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Nashville · 6 mi away
0.02 MGD
Addieville · 7 mi away
0.001 MGD
Hoyleton · 8 mi away
0.04 MGD
Ashley · 11 mi away
0.03 MGD
Richview · 11 mi away
0.02 MGD
Radom · 11 mi away
0.0076 MGD
Okawville · 12 mi away
0.96 MGD
Du Bois · 13 mi away
0.0044 MGD
Nashville Stp, 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 August 19, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms