New Lenox STP #1, Village Of
301 North Cedar Road, New Lenox, IL 60451 · Will County · Publicly Owned Treatment Works
- Average flow
- 2.24 MGD
- Design flow
- —
- NPDES permit
- ILL020559
- Effective
- Permit expires
- December 2030
- Population served
- 19,050
- CWNS 2022
New Lenox STP #1, Village Of is a publicly owned wastewater treatment works in New Lenox, Will County, Illinois treating an average of 2.24 million gallons per day, serving about 19,050 residents. It discharges under NPDES permit ILL020559 (effective), which expires in December 2030, with 14 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at New Lenox STP #1, Village Of.
Available with a free Klarifi account
See the full treatment train at New Lenox STP #1, Village Of: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 14
- Effluent violations
- 14
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for New Lenox STP #1, Village Of, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at New Lenox STP #1, Village Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
New Lenox · 1 mi away
0.18 MGD
New Lenox · 3 mi away
1.13 MGD
Joliet · 4 mi away
0.18 MGD
Mokena · 4 mi away
2.56 MGD
Frankfort · 6 mi away
4.97 MGD
Manhattan · 6 mi away
1.22 MGD
Joliet · 6 mi away
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Lockport · 7 mi away
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New Lenox STP #1, 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 March 5, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms