Romeoville Wastewater Treatment Facility
Romeoville, IL · Will County · Publicly Owned Treatment Works
- Average flow
- 4.81 MGD
- Design flow
- —
- NPDES permit
- ILL048526
- Effective
- Permit expires
- December 2030
- Population served
- 39,430
- CWNS 2022
Romeoville Wastewater Treatment Facility is a publicly owned wastewater treatment works in Romeoville, Will County, Illinois treating an average of 4.81 million gallons per day, serving about 39,430 residents. Treatment on site includes biogas balloons. It discharges under NPDES permit ILL048526 (effective), which expires in December 2030, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas balloons
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Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
25 verified contacts for Romeoville Wastewater Treatment Facility, with validated emails and direct phone numbers.
Unlock 25 verified contacts (22 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Romeoville Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Bolingbrook · 4 mi away
2.52 MGD
Lemont · 4 mi away
2 MGD
Bolingbrook · 5 mi away
1.03 MGD
Lockport · 5 mi away
—
Naperville · 6 mi away
17.26 MGD
Crest Hill · 6 mi away
1.19 MGD
Woodridge · 7 mi away
6.1 MGD
Plainfield · 7 mi away
4.34 MGD
Romeoville Wastewater Treatment Facility: 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 March 29, 2025.