Frankfort, Village Of
20538 South Lagrange Road, Frankfort, IL 60423 · Will County · Publicly Owned Treatment Works
- Average flow
- 4.97 MGD
- Design flow
- —
- NPDES permit
- ILL072192
- Effective
- Permit expires
- December 2030
- Population served
- 19,411
- CWNS 2022
Frankfort, Village Of is a publicly owned wastewater treatment plant in Frankfort, Will County, Illinois treating an average of 4.97 million gallons per day, serving about 19,411 residents. It discharges under NPDES permit ILL072192 (effective), which expires in December 2030, with 7 recorded violations in the last three years.
Treatment technology
4 treatment structures and unit processes identified at Frankfort, Village Of.
Available with a free Klarifi account
See the full treatment train at Frankfort, Village Of: structures, unit processes and planned upgrades, with exact unit counts.
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.
Key contacts
1 verified contact for Frankfort, Village Of, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Frankfort, Village Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Mokena · 3 mi away
2.56 MGD
New Lenox · 5 mi away
0.18 MGD
New Lenox · 6 mi away
2.24 MGD
New Lenox · 8 mi away
1.13 MGD
Park Forest · 9 mi away
—
Manhattan · 10 mi away
1.22 MGD
Joliet · 10 mi away
0.18 MGD
Lockport · 12 mi away
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Frankfort, 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 April 23, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms