Neponset Stp, Village Of
PO Box 79, Neponset, IL 61345 · Bureau County · Publicly Owned Treatment Works
- Average flow
- 0.06 MGD
- Design flow
- 0.43 MGD
- NPDES permit
- IL0076589
- Effective
- Permit expires
- March 2028
- Population served
- 471
- CWNS 2022
Neponset Stp, Village Of is a publicly owned wastewater treatment works in Neponset, Bureau County, Illinois treating an average of 0.06 million gallons per day against a permitted design capacity of 0.43 MGD, serving about 471 residents. It discharges under NPDES permit IL0076589 (effective), which expires in March 2028, with 20 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in November 2013.
Treatment technology
One treatment structure or unit process identified at Neponset Stp, Village Of.
Available with a free Klarifi account
See the full treatment train at Neponset Stp, Village Of: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 20
- Effluent violations
- 18
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Neponset Stp, Village Of in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $550,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Nov 2013
Neponset - 2nd Amended AO
Administrative order · SDWA, National Drinking Water Regulations · Final Order No Penalty · Compliance actions $550,000
EPA's description of the case:
“Second Amended Administrative Order issued on 1/4/2012 for system's failure to comply with the SDWA regarding combined radium-226 and radium-228.”
Source: EPA ECHO, civil enforcement case 05-2012-4603.
Full case history with a free Klarifi account
Every action against Neponset Stp, Village Of with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Neponset Stp, Village Of.
No verified contacts on file yet
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Nearby wastewater treatment plants in Illinois
Sheffield · 6 mi away
0.13 MGD
Buda · 6 mi away
0.15 MGD
Kewanee · 7 mi away
3.5 MGD
Bradford · 10 mi away
0.14 MGD
Annawan · 11 mi away
0.09 MGD
Wyanet · 12 mi away
0.15 MGD
Manlius · 13 mi away
0.03 MGD
Toulon · 14 mi away
0.13 MGD
Neponset Stp, Village 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 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms