Pekin STP #1
Pekin, IL · Tazewell County · Publicly Owned Treatment Works
- Average flow
- 2.4 MGD
- Design flow
- —
- NPDES permit
- ILL034495
- Effective
- Permit expires
- December 2030
- Population served
- 33,338
- CWNS 2022
Pekin STP #1 is a publicly owned wastewater treatment works in Pekin, Tazewell County, Illinois treating an average of 2.4 million gallons per day, serving about 33,338 residents. Treatment on site includes clarifiers, uncovered lagoons, biogas silos. It discharges under NPDES permit ILL034495 (effective), which expires in December 2030, with 7 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Pekin
Pekin's capital improvement plan lists 5 water, sewer and wastewater line items worth $2M starting 2026–2028. The largest budgeted items are shown here.
All water and sewer capital projects in Pekin →
| Project | Budget | Years |
|---|---|---|
| Lift Station Rehabs | $2,000,000 | 2026–2027 |
| WWTP Building Repairs | $300,000 | 2026–2026 |
| WWTP Digester Replacement | $60,000 | 2026–2026 |
| Blower Motors for WWTP | $50,000 | 2026–2026 |
| Sewers - New Jetter Head for Vactor Truck | $50,000 | 2028–2028 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
3 verified contacts for Pekin STP #1, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Pekin STP #1, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
South Pekin · 5 mi away
0.05 MGD
East Peoria · 8 mi away
2.25 MGD
Glasford · 8 mi away
0.24 MGD
Tremont · 8 mi away
0.06 MGD
Morton · 10 mi away
2.11 MGD
Morton · 11 mi away
0.62 MGD
Manito · 11 mi away
0.06 MGD
Hanna City · 12 mi away
0.001 MGD
Pekin STP #1: 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 September 11, 2026; facility record last updated May 18, 2025.